Pub Date : 2023-05-04DOI: 10.1080/13640461.2023.2211895
P. Das
ABSTRACT In this study, a computational fluid dynamics (CFD) model is employed to optimise the melt pouring temperature during Low superheat casting (LSC) of the Al-15 Mg2Si-4.5Si composite. The die cavity considered to perform the die filling simulations corresponds to the as-cast tensile specimens, as per ASTM B557 guidelines. The findings of the study include melt temperature distribution, solid fraction distribution during filling as well as during solidification, velocity distribution of the melt and surface defect concentration. Experimentation is performed to develop low superheat cast composite based on the numerically estimated optimum melt pouring temperature of 650°C. Mixture of irregular dendritic, polygonal and equiaxed shaped primary Mg2Si grains are observed within the cast parts, whereas primary Al grains are found to be of dendritic morphology with occasional presence of spheroids. Marked improvements in microstructure and mechanical properties have been evidenced in the LSC composite compared to its conventional cast counterpart.
{"title":"Optimisation of melt pouring temperature and low superheat casting of Al-15Mg2Si-4.5Si composite","authors":"P. Das","doi":"10.1080/13640461.2023.2211895","DOIUrl":"https://doi.org/10.1080/13640461.2023.2211895","url":null,"abstract":"ABSTRACT In this study, a computational fluid dynamics (CFD) model is employed to optimise the melt pouring temperature during Low superheat casting (LSC) of the Al-15 Mg2Si-4.5Si composite. The die cavity considered to perform the die filling simulations corresponds to the as-cast tensile specimens, as per ASTM B557 guidelines. The findings of the study include melt temperature distribution, solid fraction distribution during filling as well as during solidification, velocity distribution of the melt and surface defect concentration. Experimentation is performed to develop low superheat cast composite based on the numerically estimated optimum melt pouring temperature of 650°C. Mixture of irregular dendritic, polygonal and equiaxed shaped primary Mg2Si grains are observed within the cast parts, whereas primary Al grains are found to be of dendritic morphology with occasional presence of spheroids. Marked improvements in microstructure and mechanical properties have been evidenced in the LSC composite compared to its conventional cast counterpart.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60012683","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 : 2023-04-17DOI: 10.1080/13640461.2023.2204041
Y. Gu, G. Peng, Xiaoyun Fu, G. S. Song, S.S. Chen, S.Y. Chen
ABSTRACT The modifying influence of aluminium phosphide to the morphology of primary Si and eutectic Si was investigated in hypereutectic Al-20Si alloys via adding Al-Cu-P master alloy (0.5, 1, 20 wt.%). Microstructural results showed when Al-Cu-P addition from 0 to 0.5%, primary Si phase decreases and eutectic Si phase size remains invariable; when addition higher than 0.5%, primary Si phase keeps invariable, eutectic Si phase size increases. To prove the nucleation effect of AlP on Si phase, interfacial properties of Si/AlP interface were investigated using first-principles calculations. Results showed the AlP(100)/Si(100) interface energy is between −1.45 J/m2 and −1.38 J/m2 for Al-terminated and P-terminated AlP model, both is much smaller than liquid Si/crystalline Si interface (0.34 J/m2), consolidates that AlP particles possess strong nucleation potency for Si phases. Therefore, the modifying influence of AlP to the morphology Si phase is well clarified as a function of AlP content in Al-20Si alloys.
{"title":"Mechanism of AlP modifying the morphology of Si in Al-20Si alloys based on experimental studies and first-principles calculations","authors":"Y. Gu, G. Peng, Xiaoyun Fu, G. S. Song, S.S. Chen, S.Y. Chen","doi":"10.1080/13640461.2023.2204041","DOIUrl":"https://doi.org/10.1080/13640461.2023.2204041","url":null,"abstract":"ABSTRACT The modifying influence of aluminium phosphide to the morphology of primary Si and eutectic Si was investigated in hypereutectic Al-20Si alloys via adding Al-Cu-P master alloy (0.5, 1, 20 wt.%). Microstructural results showed when Al-Cu-P addition from 0 to 0.5%, primary Si phase decreases and eutectic Si phase size remains invariable; when addition higher than 0.5%, primary Si phase keeps invariable, eutectic Si phase size increases. To prove the nucleation effect of AlP on Si phase, interfacial properties of Si/AlP interface were investigated using first-principles calculations. Results showed the AlP(100)/Si(100) interface energy is between −1.45 J/m2 and −1.38 J/m2 for Al-terminated and P-terminated AlP model, both is much smaller than liquid Si/crystalline Si interface (0.34 J/m2), consolidates that AlP particles possess strong nucleation potency for Si phases. Therefore, the modifying influence of AlP to the morphology Si phase is well clarified as a function of AlP content in Al-20Si alloys. ","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45804500","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 : 2023-04-14DOI: 10.1080/13640461.2023.2202078
Hanieh Soltani Banavandi, R. Raiszadeh
ABSTRACT The possibility of bonding between two layers of a bifilm defect submerged in a Zn4Al liquid alloy is studied by maintaining two bars in contact with each other and the atmosphere trapped between them in a furnace for different times up to 48 h. The oxide layers on the bases of the bars were then studied by SEM, EDS, and XRD. The oxide layers on the bars' bases were identified as ZnAl2O4. This phase transformed to ZnO when the concentration of Al in the vicinity of the oxide layers decreased dramatically. This transformation was reversible, and ZnO changed back to ZnAl2O4 when an adequate Al concentration was provided near the layers. However, it is shown that these transformations, and hence the healing of bifilm defects, are improbable to occur in actual bifilm defects submerged in Zn4Al melt.
{"title":"Resistance to healing of bifilm defects in Zn4Al zinc alloy","authors":"Hanieh Soltani Banavandi, R. Raiszadeh","doi":"10.1080/13640461.2023.2202078","DOIUrl":"https://doi.org/10.1080/13640461.2023.2202078","url":null,"abstract":"ABSTRACT The possibility of bonding between two layers of a bifilm defect submerged in a Zn4Al liquid alloy is studied by maintaining two bars in contact with each other and the atmosphere trapped between them in a furnace for different times up to 48 h. The oxide layers on the bases of the bars were then studied by SEM, EDS, and XRD. The oxide layers on the bars' bases were identified as ZnAl2O4. This phase transformed to ZnO when the concentration of Al in the vicinity of the oxide layers decreased dramatically. This transformation was reversible, and ZnO changed back to ZnAl2O4 when an adequate Al concentration was provided near the layers. However, it is shown that these transformations, and hence the healing of bifilm defects, are improbable to occur in actual bifilm defects submerged in Zn4Al melt.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47313935","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 : 2023-04-07DOI: 10.1080/13640461.2023.2199505
Xiaojun Yang, Xunmei Zhu, Guoliang Yin, Kun Zhou, Zhenhua Feng, Kun Zhu
ABSTRACT Based on the analysis of chemical composition and the phase of scandium-containing clay type rare earth ore in a place in China, it is found that the content of scandium in the ore is 18.55 g/t. Due to the low leaching rate of direct acid leaching, the effect of the roasting process on the leaching rate of scandium from the raw ore was investigated. By comparing the operation of the two leaching processes, oxidised roasting-hydrochloric acid leaching and alkali roasting-hydrochloric acid leaching, we obtain the optimal technical conditions for both leaching processes. At the same time, the mechanism of alkali roasting was investigated and the conclusions obtained are of some reference for the extraction of scandium from low-grade rare earth ores.
{"title":"Study on the extraction of poor scandium from low-grade rare earth ores","authors":"Xiaojun Yang, Xunmei Zhu, Guoliang Yin, Kun Zhou, Zhenhua Feng, Kun Zhu","doi":"10.1080/13640461.2023.2199505","DOIUrl":"https://doi.org/10.1080/13640461.2023.2199505","url":null,"abstract":"ABSTRACT Based on the analysis of chemical composition and the phase of scandium-containing clay type rare earth ore in a place in China, it is found that the content of scandium in the ore is 18.55 g/t. Due to the low leaching rate of direct acid leaching, the effect of the roasting process on the leaching rate of scandium from the raw ore was investigated. By comparing the operation of the two leaching processes, oxidised roasting-hydrochloric acid leaching and alkali roasting-hydrochloric acid leaching, we obtain the optimal technical conditions for both leaching processes. At the same time, the mechanism of alkali roasting was investigated and the conclusions obtained are of some reference for the extraction of scandium from low-grade rare earth ores.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42188379","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 : 2023-04-04DOI: 10.1080/13640461.2023.2197808
S. Gautam, H. Roy, A. K. Lohar, Sudip Samanta
ABSTRACT The present investigation emphasises on rheological behaviour of semi-solid slurry of ADC12 Al alloy in order to understand mould filling behaviour during semi-solid processing. Three different experimental investigations are done using rheometer, namely, continuous cooling test, isothermal test and shear jump test, to understand the rheological behaviour of ADC12 Al alloy. Continuous cooling tests reveal increase in slurry viscosity with decrease in temperature at a specific shear rate. The isothermal test results show decreasing viscosity with increase in rate of shear and confirm that semi-solid slurry experiences shear-thinning phenomena. Shear jump experiments (SJEs) show that the viscosity of the semi-solid slurry is less sensitive at higher shear rate, which is desirable. The steady state and iso-structural stress values (obtained from SJEs) at low shear rate region showcase an upward movement of solid content, i.e. with a proportionally downward slurry temperature.
{"title":"Rheological properties of ADC12 Al alloy in the semi-solid state","authors":"S. Gautam, H. Roy, A. K. Lohar, Sudip Samanta","doi":"10.1080/13640461.2023.2197808","DOIUrl":"https://doi.org/10.1080/13640461.2023.2197808","url":null,"abstract":"ABSTRACT The present investigation emphasises on rheological behaviour of semi-solid slurry of ADC12 Al alloy in order to understand mould filling behaviour during semi-solid processing. Three different experimental investigations are done using rheometer, namely, continuous cooling test, isothermal test and shear jump test, to understand the rheological behaviour of ADC12 Al alloy. Continuous cooling tests reveal increase in slurry viscosity with decrease in temperature at a specific shear rate. The isothermal test results show decreasing viscosity with increase in rate of shear and confirm that semi-solid slurry experiences shear-thinning phenomena. Shear jump experiments (SJEs) show that the viscosity of the semi-solid slurry is less sensitive at higher shear rate, which is desirable. The steady state and iso-structural stress values (obtained from SJEs) at low shear rate region showcase an upward movement of solid content, i.e. with a proportionally downward slurry temperature.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44417035","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 : 2023-04-04DOI: 10.1080/13640461.2023.2198076
M. E. Furno, C. Tealdi, A. D. Sosa
ABSTRACT When workpieces require tight tolerance or a good surface finish, grinding is usually the best solution. Yet this process is characterised by generating a great amount of heat that needs to be controlled. The minimum quantity lubrication (MQL) system emerged as an alternative to the flood cooling system. Nevertheless, the employment of the former in austempered ductile iron (ADI) surface grinding is still an unexplored topic. This research seeks to experimentally study the applicability of MQL and the influence of the wheel speed and workspeed, in the surface topography of ADI samples subjected to different conditions of surface grinding. ADI surface topography was acquired, then the roughness parameters and surface hardness alterations were determined. The results show that the application of MQL in ADI surface grinding is possible. The surface roughness is similar to that of the flood cooling system and the surface hardness alterations are small.
{"title":"Experimental study of MQL applicability in ADI grinding and its influence on surface topography","authors":"M. E. Furno, C. Tealdi, A. D. Sosa","doi":"10.1080/13640461.2023.2198076","DOIUrl":"https://doi.org/10.1080/13640461.2023.2198076","url":null,"abstract":"ABSTRACT When workpieces require tight tolerance or a good surface finish, grinding is usually the best solution. Yet this process is characterised by generating a great amount of heat that needs to be controlled. The minimum quantity lubrication (MQL) system emerged as an alternative to the flood cooling system. Nevertheless, the employment of the former in austempered ductile iron (ADI) surface grinding is still an unexplored topic. This research seeks to experimentally study the applicability of MQL and the influence of the wheel speed and workspeed, in the surface topography of ADI samples subjected to different conditions of surface grinding. ADI surface topography was acquired, then the roughness parameters and surface hardness alterations were determined. The results show that the application of MQL in ADI surface grinding is possible. The surface roughness is similar to that of the flood cooling system and the surface hardness alterations are small.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43222609","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 : 2023-03-11DOI: 10.1080/13640461.2023.2186567
S. M. Miresmaeili, B. Nami, I. Khoubrou
ABSTRACT In the present study, the Henrian activity coefficient of strontium , dissolved in liquid Al-7Si alloy at 725–730°C has been determined to be in the order of 10−2, using the numerical thermodynamic analyses. By knowing the , formation of the compounds, Sr(OH)2 and SrH2 through the reaction of dissolved elements in Al-7Si alloy melt has been analysed. The results indicated that the free energy of the formation reaction of Sr(OH)2 and SrH2 in the alloy melt are positive at different temperatures, showing that these compounds may not be formed in the liquid aluminium alloys.
{"title":"Activity of strontium in liquid Sr-modified Al-7Si alloy","authors":"S. M. Miresmaeili, B. Nami, I. Khoubrou","doi":"10.1080/13640461.2023.2186567","DOIUrl":"https://doi.org/10.1080/13640461.2023.2186567","url":null,"abstract":"ABSTRACT In the present study, the Henrian activity coefficient of strontium , dissolved in liquid Al-7Si alloy at 725–730°C has been determined to be in the order of 10−2, using the numerical thermodynamic analyses. By knowing the , formation of the compounds, Sr(OH)2 and SrH2 through the reaction of dissolved elements in Al-7Si alloy melt has been analysed. The results indicated that the free energy of the formation reaction of Sr(OH)2 and SrH2 in the alloy melt are positive at different temperatures, showing that these compounds may not be formed in the liquid aluminium alloys.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44240361","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 : 2023-03-11DOI: 10.1080/13640461.2023.2188682
X. Fang, Yonggang Yang, Wangzhong Mu, Xiao-yu Yang, Han-long Zhang, Z. Mi
ABSTRACT This paper studied the effects of the superheating degree and cooling intensity on the solidification structure of CP 780 slab. The results indicated that the equiaxed crystal ratio decreases with the increase of superheating degree and the cooling intensity. When the superheating degree increases from 15 to 25°C, the equiaxed crystal ratio drops sharply. While the equiaxed crystal ratio decreases slightly with an increasing superheating degree from 25°C to 55°C. It is further revealed that the superheating degree has a greater effect on the equiaxed crystal ratio compared with the influence of cooling intensity. Quantitative analysed the relationship among the equiaxed crystal ratio, the superheating degree and cooling intensity is in line with the Extreme 2D model. The accuracy of the model performance can reach 97.6% when predicting the equiaxed crystal ratio of CSP-CP 780 during CSP process.
{"title":"Effects of the superheating degree and cooling intensity on the as-cast microstructure of CP780 thin slab","authors":"X. Fang, Yonggang Yang, Wangzhong Mu, Xiao-yu Yang, Han-long Zhang, Z. Mi","doi":"10.1080/13640461.2023.2188682","DOIUrl":"https://doi.org/10.1080/13640461.2023.2188682","url":null,"abstract":"ABSTRACT This paper studied the effects of the superheating degree and cooling intensity on the solidification structure of CP 780 slab. The results indicated that the equiaxed crystal ratio decreases with the increase of superheating degree and the cooling intensity. When the superheating degree increases from 15 to 25°C, the equiaxed crystal ratio drops sharply. While the equiaxed crystal ratio decreases slightly with an increasing superheating degree from 25°C to 55°C. It is further revealed that the superheating degree has a greater effect on the equiaxed crystal ratio compared with the influence of cooling intensity. Quantitative analysed the relationship among the equiaxed crystal ratio, the superheating degree and cooling intensity is in line with the Extreme 2D model. The accuracy of the model performance can reach 97.6% when predicting the equiaxed crystal ratio of CSP-CP 780 during CSP process.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45512627","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 : 2022-11-02DOI: 10.1080/13640461.2023.2178077
Y. Ateș, Selma Özarslan, Güven Yarkadaş, Hüseyin Şevik
ABSTRACT The AZ91-1Sr alloy, the 0.5, 1 and 2 vol.% Al2O3/AZ91-1Sr nanocomposites were fabricated by high pressure die casting method and investigated the effect of nano Al2O3 particles on the mechanical properties and creep behaviour of the AZ91-1Sr alloy. Mechanical and creep tests disclosed remarkable enhancements in the yield strength, tensile strength, hardness and creep resistance of the AZ91-1Sr alloy with addition of nano Al2O3 particles. The best results were obtained in the case of the addition of 2 vol.% Al2O3 nano particles.
{"title":"Effect of Al2O3 Nano Particle Addition on Mechanical Properties and Creep Behaviour of High Pressure Die Cast AZ91-1Sr Alloy","authors":"Y. Ateș, Selma Özarslan, Güven Yarkadaş, Hüseyin Şevik","doi":"10.1080/13640461.2023.2178077","DOIUrl":"https://doi.org/10.1080/13640461.2023.2178077","url":null,"abstract":"ABSTRACT The AZ91-1Sr alloy, the 0.5, 1 and 2 vol.% Al2O3/AZ91-1Sr nanocomposites were fabricated by high pressure die casting method and investigated the effect of nano Al2O3 particles on the mechanical properties and creep behaviour of the AZ91-1Sr alloy. Mechanical and creep tests disclosed remarkable enhancements in the yield strength, tensile strength, hardness and creep resistance of the AZ91-1Sr alloy with addition of nano Al2O3 particles. The best results were obtained in the case of the addition of 2 vol.% Al2O3 nano particles.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46159512","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 : 2022-11-02DOI: 10.1080/13640461.2023.2177784
Zhe‐ming Zhu, Junxiu Chen, Chang-jun Wu, Ya Liu, Jianhua Wang, X. Su
ABSTRACT In this study, the effects of melt titanium content on the grain structure and mechanical properties of Al-5Ti-B-modified alloy 2618 were investigated. The results showed that when the titanium content in the melt was zero, the best modification effects were obtained when the amount of Al-5Ti-B added was 1.5 wt.%. When the amount of Al-5Ti-B added was fixed at 0.5 wt.%, the best modification effects were obtained when the melt titanium content was 0.05 wt.%. When the final titanium content of alloy 2618 was fixed at 0.1 wt.%, the best modification effect was obtained when the melt titanium content was fixed at 0.03 wt.% and the alloy was modified with 1.4 wt.% Al-5Ti-B. Considering the production cost and excellent modification effects, the optimal melting and modification treatment process for alloy 2618 are as follows: an alloy melt titanium content of 0.05 wt.% and an alloy modified with 0.5 wt.% Al-5Ti-B.
{"title":"Effects of melt titanium content on the grain structure and mechanical properties of Al-5Ti-B-modified alloy 2618","authors":"Zhe‐ming Zhu, Junxiu Chen, Chang-jun Wu, Ya Liu, Jianhua Wang, X. Su","doi":"10.1080/13640461.2023.2177784","DOIUrl":"https://doi.org/10.1080/13640461.2023.2177784","url":null,"abstract":"ABSTRACT In this study, the effects of melt titanium content on the grain structure and mechanical properties of Al-5Ti-B-modified alloy 2618 were investigated. The results showed that when the titanium content in the melt was zero, the best modification effects were obtained when the amount of Al-5Ti-B added was 1.5 wt.%. When the amount of Al-5Ti-B added was fixed at 0.5 wt.%, the best modification effects were obtained when the melt titanium content was 0.05 wt.%. When the final titanium content of alloy 2618 was fixed at 0.1 wt.%, the best modification effect was obtained when the melt titanium content was fixed at 0.03 wt.% and the alloy was modified with 1.4 wt.% Al-5Ti-B. Considering the production cost and excellent modification effects, the optimal melting and modification treatment process for alloy 2618 are as follows: an alloy melt titanium content of 0.05 wt.% and an alloy modified with 0.5 wt.% Al-5Ti-B.","PeriodicalId":13939,"journal":{"name":"International Journal of Cast Metals Research","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47552184","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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