Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146214
Ch. Morsiya, Pandya
aluminium matrix composites offer a combination of properties such as lower weight, higher strength, higher wear resistance and many more. The stir casting process is easy to use, involves low cost and is suitable for mass production compared to other manufacturing processes. an in-depth look at recently manufactured aluminium matrix composites and their impact on particle distribution, porosity, wettability, microstructure and mechanical properties of al matrix composites have all been studied in relation to stirring parameters. several significant concerns have been raised about the sample’s poor wettability, porosity and particle distribution. Mechanical, thermal, and tribological properties are frequently studied in conjunction with variations in reinforcement proportion but few studies on the effect of stirrer blade design and parameters such as stirrer shape, dimensions and position have been reported. To study the effect of stirrer blade design on particle distribution, computational fluid dynamics is used by researchers. reported multiphysics models were k - ε model and the k - ω model for simulation. it is necessary to analyse these models to determine which one best solves the real-time problem. stirrer design selection and analysis of its effect on particle distribution using simulation, while taking underlying physics into account, can be well-thought-out as a future area of research in the widely adopted stir casting field.
铝基复合材料具有重量轻、强度高、耐磨性强等多种特性。与其他制造工艺相比，搅拌铸造工艺易于使用，成本低，适合大规模生产。对最近制造的铝基复合材料及其对颗粒分布、孔隙率、润湿性、微观结构和机械性能的影响进行了深入研究，这些都与搅拌参数有关。机械、热和摩擦学特性经常与增强比例的变化结合在一起进行研究，但有关搅拌器叶片设计和搅拌器形状、尺寸和位置等参数的影响的研究报道却很少。为了研究搅拌器叶片设计对颗粒分布的影响，研究人员使用了计算流体动力学。已报道的多物理场模型有 k - ε 模型和用于模拟的 k - ω 模型。有必要对这些模型进行分析，以确定哪种模型最能解决实时问题。
{"title":"Effect of Stir Casting Process Parameters and Stirrer Blade Geometry on Mechanical Properties of Al MMCs – A Review","authors":"Ch. Morsiya, Pandya","doi":"10.24425/amm.2023.146214","DOIUrl":"https://doi.org/10.24425/amm.2023.146214","url":null,"abstract":"aluminium matrix composites offer a combination of properties such as lower weight, higher strength, higher wear resistance and many more. The stir casting process is easy to use, involves low cost and is suitable for mass production compared to other manufacturing processes. an in-depth look at recently manufactured aluminium matrix composites and their impact on particle distribution, porosity, wettability, microstructure and mechanical properties of al matrix composites have all been studied in relation to stirring parameters. several significant concerns have been raised about the sample’s poor wettability, porosity and particle distribution. Mechanical, thermal, and tribological properties are frequently studied in conjunction with variations in reinforcement proportion but few studies on the effect of stirrer blade design and parameters such as stirrer shape, dimensions and position have been reported. To study the effect of stirrer blade design on particle distribution, computational fluid dynamics is used by researchers. reported multiphysics models were k - ε model and the k - ω model for simulation. it is necessary to analyse these models to determine which one best solves the real-time problem. stirrer design selection and analysis of its effect on particle distribution using simulation, while taking underlying physics into account, can be well-thought-out as a future area of research in the widely adopted stir casting field.","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":"116 36","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138959044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146205
{"title":"Mechanical Properties, Machinability and Corrosion Resistance of Zamak5 Alloyed by Copper","authors":"","doi":"10.24425/amm.2023.146205","DOIUrl":"https://doi.org/10.24425/amm.2023.146205","url":null,"abstract":"","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":"114 37","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138959138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146206
P. Singh, R. K. Singh, A. K. Das
in the present study, the mechanical properties and high-temperature sliding wear behaviour of the Al6082-SiC-TiO 2 hybrid composite in different environmental conditions produced by the stir-casting process were investigated and distinguished with single-reinforced composites (Al6082-SiC and Al6082-TiO 2 ) and matrix alloy. The microstructure of composites exhibited a reasonably uniform scatter of particles in the aluminium matrix with good bonding between the matrix-particle interfaces. The hybrid composite’s hardness and ultimate tensile strength showed higher hardness and tensile strength than matrix alloy and single-reinforced composites, whereas trends were reversed for the elongation. The impact test of the materials was conducted at different temperatures (room temperature, 0°C, –25°C, –50°C, and –75°C). The hybrid composite shows higher impact strength than the other materials, and impact strength decreases with temperature because ductility decreases with temperature. The fracture surfaces were examined to identify the fracture mechanism. The sliding wear test was conducted at different temperatures (room temperature, 100°C, 175°C, 250°C and 325°C) to distinguish the tribological behaviour of materials. The weight loss of the materials was increased with an increase in temperatures. The hybrid composite shows a lower weight loss than the other condition samples, irrespective of the temperatures. The wear surfaces were examined to predict the material removal mechanism.
{"title":"Effect of Different Ceramic Reinforcements on Microstructure, Mechanical Properties and Tribological Behaviour of the Al6082 Alloy Produced by Stir Casting Process","authors":"P. Singh, R. K. Singh, A. K. Das","doi":"10.24425/amm.2023.146206","DOIUrl":"https://doi.org/10.24425/amm.2023.146206","url":null,"abstract":"in the present study, the mechanical properties and high-temperature sliding wear behaviour of the Al6082-SiC-TiO 2 hybrid composite in different environmental conditions produced by the stir-casting process were investigated and distinguished with single-reinforced composites (Al6082-SiC and Al6082-TiO 2 ) and matrix alloy. The microstructure of composites exhibited a reasonably uniform scatter of particles in the aluminium matrix with good bonding between the matrix-particle interfaces. The hybrid composite’s hardness and ultimate tensile strength showed higher hardness and tensile strength than matrix alloy and single-reinforced composites, whereas trends were reversed for the elongation. The impact test of the materials was conducted at different temperatures (room temperature, 0°C, –25°C, –50°C, and –75°C). The hybrid composite shows higher impact strength than the other materials, and impact strength decreases with temperature because ductility decreases with temperature. The fracture surfaces were examined to identify the fracture mechanism. The sliding wear test was conducted at different temperatures (room temperature, 100°C, 175°C, 250°C and 325°C) to distinguish the tribological behaviour of materials. The weight loss of the materials was increased with an increase in temperatures. The hybrid composite shows a lower weight loss than the other condition samples, irrespective of the temperatures. The wear surfaces were examined to predict the material removal mechanism.","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":" 847","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138960365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146233
{"title":"Effect of History of Deformation and Heat Treatment on Cold Drawing Process Parameters and Final Properties of AISI 302 Stainless Steel Wire","authors":"","doi":"10.24425/amm.2023.146233","DOIUrl":"https://doi.org/10.24425/amm.2023.146233","url":null,"abstract":"","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":" 11","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138961012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146203
X. Zhang, S. Chen, Lu Li, P. Yang
arsenic is the only beneficial impurity for copper electrorefining through inhibiting anode passivation and the formation of floating slimes. The behaviour of copper anodes with different content of arsenic were studied at high current density (>280 a/m 2 ). it showed that low arsenic anodes (as < 300 ppm) easily generated anode passivation, floating slimes and cathode nodules during the electrorefining proccess. The floating slimes, electrolyte, cathode and anode were observed and analyzed. as result, low arsenic anodes were more likely to be passivated due to their microstructure defects and irregular microstructure. increasing electrolyte temperature and addition of glycerol were propitious to reduce low arsenic anodes’ passivation. The floating slimes occured when the concentration of as(iii) in electrolyte decreased to 1 g/L, and they would be precipitated by polyacrylamide. all measures greatly improved the cathode quality at current density of 300 a/m 2 .
{"title":"The Behaviour of Low Arsenic Copper Anodes at High Current Density in Electrorefining","authors":"X. Zhang, S. Chen, Lu Li, P. Yang","doi":"10.24425/amm.2023.146203","DOIUrl":"https://doi.org/10.24425/amm.2023.146203","url":null,"abstract":"arsenic is the only beneficial impurity for copper electrorefining through inhibiting anode passivation and the formation of floating slimes. The behaviour of copper anodes with different content of arsenic were studied at high current density (>280 a/m 2 ). it showed that low arsenic anodes (as < 300 ppm) easily generated anode passivation, floating slimes and cathode nodules during the electrorefining proccess. The floating slimes, electrolyte, cathode and anode were observed and analyzed. as result, low arsenic anodes were more likely to be passivated due to their microstructure defects and irregular microstructure. increasing electrolyte temperature and addition of glycerol were propitious to reduce low arsenic anodes’ passivation. The floating slimes occured when the concentration of as(iii) in electrolyte decreased to 1 g/L, and they would be precipitated by polyacrylamide. all measures greatly improved the cathode quality at current density of 300 a/m 2 .","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":" 41","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138961452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146229
F. S. Shaharudin, F. F. Zainal, F. hayaZi, Parimin, i.m. nadZri, S. haStuty, KuSbiantoro
this research was conducted to examine the corrosion behaviour of mild steel bar embedded in geopolymer paste based fly ash Class F during curing and non-curing process. the geopolymer paste was fabricated by blending in the fly ash with alkaline activators (naoh solution with molarity of 12 m, 2.5 ratio of solution na2Sio3/naoh). the paste was produced in 50 mm × 50 mm × 50 mm mould where the mild steel bar of 100 mm (length) × 12 mm (diameter) was embedded at the center of geopolymer paste. this is to comprehend the corrosion behaviour of mild steel embedded in geopolymer paste with and without curing process. Process of curing is carried out for 24 hours at a temperature of 60°C in oven. While on the contrary, the non-curing process will only be leave at room temperature. both samples were tested after 28 days of curing to determine the corrosion behaviour, phase analysis and morphology analysis. in accordance with the morphology analysis, it shows that the fly ash was totally reacted with alkaline solutions in curing geopolymer paste sample while the non-curing geopolymer paste has shown the unreacted fly ash with high number of pores. the phase analysis of mild steel embedded in this geopolymer paste during curing and without curing process has proven that the presence of new crystallographic peak which also known as passive layer occurred. the potential values result by oCP testing shows the curing sample has highest potential values as compared to the non-curing sample ones.
{"title":"Investigation of Corrosion Behaviour of Mild Steel Embedded in Geopolymer Paste with Curing and Non-Curing Process","authors":"F. S. Shaharudin, F. F. Zainal, F. hayaZi, Parimin, i.m. nadZri, S. haStuty, KuSbiantoro","doi":"10.24425/amm.2023.146229","DOIUrl":"https://doi.org/10.24425/amm.2023.146229","url":null,"abstract":"this research was conducted to examine the corrosion behaviour of mild steel bar embedded in geopolymer paste based fly ash Class F during curing and non-curing process. the geopolymer paste was fabricated by blending in the fly ash with alkaline activators (naoh solution with molarity of 12 m, 2.5 ratio of solution na2Sio3/naoh). the paste was produced in 50 mm × 50 mm × 50 mm mould where the mild steel bar of 100 mm (length) × 12 mm (diameter) was embedded at the center of geopolymer paste. this is to comprehend the corrosion behaviour of mild steel embedded in geopolymer paste with and without curing process. Process of curing is carried out for 24 hours at a temperature of 60°C in oven. While on the contrary, the non-curing process will only be leave at room temperature. both samples were tested after 28 days of curing to determine the corrosion behaviour, phase analysis and morphology analysis. in accordance with the morphology analysis, it shows that the fly ash was totally reacted with alkaline solutions in curing geopolymer paste sample while the non-curing geopolymer paste has shown the unreacted fly ash with high number of pores. the phase analysis of mild steel embedded in this geopolymer paste during curing and without curing process has proven that the presence of new crystallographic peak which also known as passive layer occurred. the potential values result by oCP testing shows the curing sample has highest potential values as compared to the non-curing sample ones.","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":" 16","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138962090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
aiSi 1045 steel has the characteristics of high strain rate, large strain, and sharp rise in temperature during high-speed deformation process, resulting in a concentrated deformation band and fine structure. in this work, the microstructure of submicron-sized grains in aiSi 1045 steel material formed under 10 6 s –1 during a high speed cutting process was examined. To reveal the dynamic evolution mechanism of the aiSi 1045 microstructure, the continuous dynamic recrystallization theory was introduced. The results show a high dislocation density which favor the formation of small angle grain boundaries during the high speed cutting process. Kinetics calculations that use continuous dynamic recrystallization mechanisms prove that the recrystallization size is constant when the strain rate increases from 10 3 s –1 to 10 6 s –1 , and the transition time is reduced from 6×10 –5 s to 4×10 –8 s. The recrystallization grains were gradually formed during the deformation of the material, not generated after the deformation.
aiSi 1045 钢在高速变形过程中具有应变率高、应变量大、温度急剧升高的特点，从而形成了集中的变形带和精细的组织结构。本文研究了 aiSi 1045 钢材料在 10 6 s -1 高速切削过程中形成的亚微米尺寸晶粒的微观组织结构。为了揭示 aiSi 1045 显微结构的动态演化机制，引入了连续动态再结晶理论。结果表明，在高速切削过程中，高位错密度有利于小角度晶界的形成。利用连续动态再结晶机制进行的动力学计算证明，当应变速率从 10 3 s -1 增加到 10 6 s -1 时，再结晶尺寸不变，过渡时间从 6×10 -5 s 缩短到 4×10 -8 s。
{"title":"Microstructure Evolution Mechanism of AISI 1045 Steel Under High Speed Deformation","authors":"Lingen Luo, Jianming Pang, Yaoxin Song, ShuLan Liu, hao Peng, Chunlei Pu, Yinhe Lin, Jingwei Li, Shi","doi":"10.24425/amm.2023.146219","DOIUrl":"https://doi.org/10.24425/amm.2023.146219","url":null,"abstract":"aiSi 1045 steel has the characteristics of high strain rate, large strain, and sharp rise in temperature during high-speed deformation process, resulting in a concentrated deformation band and fine structure. in this work, the microstructure of submicron-sized grains in aiSi 1045 steel material formed under 10 6 s –1 during a high speed cutting process was examined. To reveal the dynamic evolution mechanism of the aiSi 1045 microstructure, the continuous dynamic recrystallization theory was introduced. The results show a high dislocation density which favor the formation of small angle grain boundaries during the high speed cutting process. Kinetics calculations that use continuous dynamic recrystallization mechanisms prove that the recrystallization size is constant when the strain rate increases from 10 3 s –1 to 10 6 s –1 , and the transition time is reduced from 6×10 –5 s to 4×10 –8 s. The recrystallization grains were gradually formed during the deformation of the material, not generated after the deformation.","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":" 13","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138994551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146190
Shih-Hsien Chang, Kun-Jie Liao, K. Huang, Cheng Liang
This study utilizes Ti-8nb-4Co alloys added to different proportions of Mo 2 C powders (1, 3, and 5 mass%) by the vacuum sintering process of powder metallurgy and simultaneously vacuum sinters the alloys at 1240, 1270, 1300, and 1330°C for 1 h, respectively. The experimental results indicate that when 3 mass% Mo 2 C powders were added to the Ti-8nb-4Co alloys, the specimens possessed the optimal mechanical properties after sintering at 1300°C for 1 h. The relative density was 98.02%, and the hardness and TRS were enhanced to 69.6 hRa and 1816.7 MPa, respectively. in addition, the microstructure of vacuum sintered Ti-8nb-4Co-3Mo 2 C alloys has both α and β-phase structures, as well as TiC precipitates. EBSD results confirm that the Mo 2 C in situ produced TiC during the sintering process and was uniformly dispersed in the grain boundary. Moreover, the reduced molybdenum atom acted as a β-phase stabilizing element and solid-solution in the titanium matrix.
本研究利用粉末冶金的真空烧结工艺，在 Ti-8nb-4Co 合金中加入不同比例的 Mo 2 C 粉末（1、3 和 5 质量%），同时分别在 1240、1270、1300 和 1330°C 下真空烧结合金 1 小时。实验结果表明，当在 Ti-8nb-4Co 合金中添加 3 质量%的 Mo 2 C 粉末时，试样在 1300°C 下烧结 1 小时后具有最佳的机械性能，相对密度为 98.此外，真空烧结 Ti-8nb-4Co-3Mo 2 C 合金的微观结构具有 α 和 β 相结构以及 TiC 沉淀。EBSD 结果证实，Mo 2 C 在烧结过程中原位生成了 TiC，并均匀地分散在晶界中。此外，还原钼原子在钛基体中起到了β相稳定元素和固溶体的作用。
{"title":"Effects of the Microstructure and Strengthening Mechanisms of Mo2C Powders Being Added to Ti-8Nb-4Co Alloy Via the Vacuum Sintering Process","authors":"Shih-Hsien Chang, Kun-Jie Liao, K. Huang, Cheng Liang","doi":"10.24425/amm.2023.146190","DOIUrl":"https://doi.org/10.24425/amm.2023.146190","url":null,"abstract":"This study utilizes Ti-8nb-4Co alloys added to different proportions of Mo 2 C powders (1, 3, and 5 mass%) by the vacuum sintering process of powder metallurgy and simultaneously vacuum sinters the alloys at 1240, 1270, 1300, and 1330°C for 1 h, respectively. The experimental results indicate that when 3 mass% Mo 2 C powders were added to the Ti-8nb-4Co alloys, the specimens possessed the optimal mechanical properties after sintering at 1300°C for 1 h. The relative density was 98.02%, and the hardness and TRS were enhanced to 69.6 hRa and 1816.7 MPa, respectively. in addition, the microstructure of vacuum sintered Ti-8nb-4Co-3Mo 2 C alloys has both α and β-phase structures, as well as TiC precipitates. EBSD results confirm that the Mo 2 C in situ produced TiC during the sintering process and was uniformly dispersed in the grain boundary. Moreover, the reduced molybdenum atom acted as a β-phase stabilizing element and solid-solution in the titanium matrix.","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":" 24","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138960906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146193
{"title":"Material Aspects of Historic Fine Ceramics","authors":"","doi":"10.24425/amm.2023.146193","DOIUrl":"https://doi.org/10.24425/amm.2023.146193","url":null,"abstract":"","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":" 1046","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138960333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.24425/amm.2023.146202
P. Kaliuzhnyi, ShalevSKa, SliuSarev
The article considers the method of obtaining reinforced castings from gray cast iron by lost foam casting. The aim of this study was to determine the microstructure formation of gray cast iron reinforced with inserts of carbon and stainless steel in this casting method. The results of the research have shown that the products of destruction of expanded polystyrene have a positive effect on the bonding formation of cast iron with reinforcing inserts. When steel wire is used as reinforcement, a decarbonized layer of cast iron is being formed around it, in which the inclusions of graphite are smaller and their quantity is less than in the main metal. Due to carburization, the surface structure of the reinforcement changes from ferrite to pearlite with cementite. Steel wire reinforcement can be effective in increasing strength and toughness of gray cast iron. The usage of stainless steel reinforcement leads to the formation of a transition layer on the part of the matrix metal. it contains ledeburite with dissolved chromium, which increase the wear resistance of cast iron.
{"title":"Microstructure of Reinforced Cast Iron Produced by Lost Foam Casting","authors":"P. Kaliuzhnyi, ShalevSKa, SliuSarev","doi":"10.24425/amm.2023.146202","DOIUrl":"https://doi.org/10.24425/amm.2023.146202","url":null,"abstract":"The article considers the method of obtaining reinforced castings from gray cast iron by lost foam casting. The aim of this study was to determine the microstructure formation of gray cast iron reinforced with inserts of carbon and stainless steel in this casting method. The results of the research have shown that the products of destruction of expanded polystyrene have a positive effect on the bonding formation of cast iron with reinforcing inserts. When steel wire is used as reinforcement, a decarbonized layer of cast iron is being formed around it, in which the inclusions of graphite are smaller and their quantity is less than in the main metal. Due to carburization, the surface structure of the reinforcement changes from ferrite to pearlite with cementite. Steel wire reinforcement can be effective in increasing strength and toughness of gray cast iron. The usage of stainless steel reinforcement leads to the formation of a transition layer on the part of the matrix metal. it contains ledeburite with dissolved chromium, which increase the wear resistance of cast iron.","PeriodicalId":8304,"journal":{"name":"Archives of Metallurgy and Materials","volume":" 83","pages":""},"PeriodicalIF":0.6,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138961254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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