Yao Huai, Yuhui Wang, Shubo Wang, Yi Xiong, M. Huttula, Wei Cao
With the help of supersonic fine particle bombardment technology, a gradient nanostructure with a certain layer depth was constructed on the surface of an Mg-1.8Zn-0.5Zr-1.5Gd biological magnesium alloy. The effects of bombardment time on the microstructure, mechanical properties, and corrosion resistance of the gradient nanostructure were investigated. The results showed that the layer depth and surface roughness of the gradient nanostructures increased with an increase in the bombardment time, and the corresponding mechanical properties and corrosion resistance first increased and then decreased with an extension of the bombardment time. When the bombardment time was 30 s, the alloy had good mechanical properties and corrosion resistance. Its tensile strength, yield strength, elongation, and static corrosion rate were 299.1 ± 2.2 MPa, 264.4 ± 1.5 MPa, 36.8 ± 1.3 %, and 0.307 ± 0.015 mm y − 1 , respectively. The results of the 120-h immersion experiment in simulated human body fluids showed that the average corrosion rate of the alloy first decreased, then increased, and finally decreased with an extension of the immersion time and finally tended
利用超声细粒子轰击技术，在Mg-1.8Zn-0.5Zr-1.5Gd生物镁合金表面构建了具有一定层深的梯度纳米结构。研究了轰击时间对梯度纳米结构的微观结构、力学性能和耐蚀性的影响。结果表明:随着轰击时间的增加，梯度纳米结构的层深和表面粗糙度增大，相应的力学性能和耐蚀性随轰击时间的延长先增大后减小;当轰击时间为30 s时，合金具有良好的力学性能和耐腐蚀性。其抗拉强度为299.1±2.2 MPa，屈服强度为264.4±1.5 MPa，伸长率为36.8±1.3%，静态腐蚀率为0.307±0.015 mm y−1。在模拟人体体液中浸泡120 h的实验结果表明，合金的平均腐蚀速率随着浸泡时间的延长先降低后升高，最后降低并趋于平缓
{"title":"Effects of supersonic fine particle bombardment on the microstructure and properties of an Mg-1.8Zn-0.5Zr-1.5Gd biological magnesium alloy","authors":"Yao Huai, Yuhui Wang, Shubo Wang, Yi Xiong, M. Huttula, Wei Cao","doi":"10.31577/km.2023.5.321","DOIUrl":"https://doi.org/10.31577/km.2023.5.321","url":null,"abstract":"With the help of supersonic fine particle bombardment technology, a gradient nanostructure with a certain layer depth was constructed on the surface of an Mg-1.8Zn-0.5Zr-1.5Gd biological magnesium alloy. The effects of bombardment time on the microstructure, mechanical properties, and corrosion resistance of the gradient nanostructure were investigated. The results showed that the layer depth and surface roughness of the gradient nanostructures increased with an increase in the bombardment time, and the corresponding mechanical properties and corrosion resistance first increased and then decreased with an extension of the bombardment time. When the bombardment time was 30 s, the alloy had good mechanical properties and corrosion resistance. Its tensile strength, yield strength, elongation, and static corrosion rate were 299.1 ± 2.2 MPa, 264.4 ± 1.5 MPa, 36.8 ± 1.3 %, and 0.307 ± 0.015 mm y − 1 , respectively. The results of the 120-h immersion experiment in simulated human body fluids showed that the average corrosion rate of the alloy first decreased, then increased, and finally decreased with an extension of the immersion time and finally tended","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72722028","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}
Ji-hui Luo, Tingling Liu, Suting Wei, Fang Qin, Yongda Mo
The Cu-5wt.%Sn alloy was prepared by using the horizontal continuous unidirectional so-lidification (HCUS) technique. The microstructure of HCUS Cu-5wt.%Sn alloy was analyzed by optical microscope and scanning electron microscope. Meanwhile, numerical simulation software ProCAST was used to simulate the Sn distribution of HCUS Cu 5wt.%Sn alloy. The results show that there exists a serious exudation layer on the lower surface of the HCUS Cu-5wt.%Sn alloy, while there is almost no exudation layer on the upper surface of the alloy. The simulation results show that the solid-liquid interface in the center protrudes to the liquid during the HCUS process. A narrow gap is formed between the mold and the alloy. During solidification, Sn solute is precipitated from solid to liquid. Therefore, the liquid between dendrites has a low melting point and does not solidify at high mold temperatures. These liquids flow down into the gap due to gravity and solidify at the last stage, forming an exudation layer on the lower surface enriched by Sn solute.
Cu-5wt。采用水平连续单向凝固(HCUS)技术制备了%Sn合金。HCUS Cu-5wt的显微组织。采用光学显微镜和扫描电镜对%Sn合金进行了分析。同时，利用数值模拟软件ProCAST对HCUS Cu 5wt的Sn分布进行了模拟。%锡合金。结果表明:HCUS Cu-5wt下表面存在严重的渗出层;%Sn合金，而合金上表面几乎没有渗出层。仿真结果表明，在HCUS过程中，中心的固液界面向液体突出。在模具和合金之间形成一个狭窄的间隙。在凝固过程中，锡溶质由固体析出为液体。因此，枝晶之间的液体熔点低，在模具温度高时不凝固。这些液体在重力作用下向下流入空隙中，并在最后阶段凝固，在下部表面形成富含锡溶质的渗出层。
{"title":"Formation mechanism of surface exudation in Cu-Sn alloy prepared by horizontal continuous unidirectional solidification","authors":"Ji-hui Luo, Tingling Liu, Suting Wei, Fang Qin, Yongda Mo","doi":"10.31577/km.2023.5.277","DOIUrl":"https://doi.org/10.31577/km.2023.5.277","url":null,"abstract":"The Cu-5wt.%Sn alloy was prepared by using the horizontal continuous unidirectional so-lidification (HCUS) technique. The microstructure of HCUS Cu-5wt.%Sn alloy was analyzed by optical microscope and scanning electron microscope. Meanwhile, numerical simulation software ProCAST was used to simulate the Sn distribution of HCUS Cu 5wt.%Sn alloy. The results show that there exists a serious exudation layer on the lower surface of the HCUS Cu-5wt.%Sn alloy, while there is almost no exudation layer on the upper surface of the alloy. The simulation results show that the solid-liquid interface in the center protrudes to the liquid during the HCUS process. A narrow gap is formed between the mold and the alloy. During solidification, Sn solute is precipitated from solid to liquid. Therefore, the liquid between dendrites has a low melting point and does not solidify at high mold temperatures. These liquids flow down into the gap due to gravity and solidify at the last stage, forming an exudation layer on the lower surface enriched by Sn solute.","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78252315","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}
{"title":"Analysis of thermal deformation behavior and workability of 37CrS4 special steel","authors":"Jingcheng Yang, Lizhong Wang, Mingzhe Xue","doi":"10.31577/km.2023.4.233","DOIUrl":"https://doi.org/10.31577/km.2023.4.233","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135643091","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}
Xiang Gao, Wei Li, Yi Fan, Jiasheng Zou, Keng Yan, Jiaqing Tang, Kun Liu
{"title":"A new test for evaluating crack sensitivity of materials during welding","authors":"Xiang Gao, Wei Li, Yi Fan, Jiasheng Zou, Keng Yan, Jiaqing Tang, Kun Liu","doi":"10.31577/km.2023.4.205","DOIUrl":"https://doi.org/10.31577/km.2023.4.205","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135690190","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}
Ye Wang, Xiuyu Gao, Bo Jiang, Dongdong Zhu, Maoliang Hu Hu, Wentao Jiang
{"title":"Comparison between spark plasma sintering and hot extrusion for solid-state recycling of Al-Si-Cu-Fe alloy chips","authors":"Ye Wang, Xiuyu Gao, Bo Jiang, Dongdong Zhu, Maoliang Hu Hu, Wentao Jiang","doi":"10.31577/km.2023.4.267","DOIUrl":"https://doi.org/10.31577/km.2023.4.267","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135693130","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}
Emre Deniz Yalçın, Aykut Çanakçı, Hamdullah Çuvalcı, Temel Varol Varol, Abdullah Hasan Karabacak
{"title":"The effect of boron nitride (h-BN) and silicon carbide (SiC) on the microstructure and wear behavior of ZA40/SiC/h-BN hybrid composites processed by hot pressing","authors":"Emre Deniz Yalçın, Aykut Çanakçı, Hamdullah Çuvalcı, Temel Varol Varol, Abdullah Hasan Karabacak","doi":"10.31577/km.2023.4.257","DOIUrl":"https://doi.org/10.31577/km.2023.4.257","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135643478","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}
Krzysztof Szymkiewicz, Marek Góral, Tadeusz Kubaszek, Kamil Gancarczyk
{"title":"\"Effect of plasma spraying parameters on microstructure and thickness and porosity of WC-CrC-Ni coatings deposited on titanium \"","authors":"Krzysztof Szymkiewicz, Marek Góral, Tadeusz Kubaszek, Kamil Gancarczyk","doi":"10.31577/km.2023.4.223","DOIUrl":"https://doi.org/10.31577/km.2023.4.223","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135691492","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}
T. Kovaliuk, R. Colman, B. Vondrackova, O. Kolomiets, M. Klicpera
{"title":"Crystal structure, magnetic and thermal properties of the non-stoichiometric alloys Tb0.95Pd2.20Mn0.85 and Dy1.00Pd2.15Mn0.85","authors":"T. Kovaliuk, R. Colman, B. Vondrackova, O. Kolomiets, M. Klicpera","doi":"10.31577/km.2023.3.135","DOIUrl":"https://doi.org/10.31577/km.2023.3.135","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83652356","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}
Maja Ðekić, Jelena Ostojić, Hađer Sinanović, F. Korać, A. Salčinović Fetić
{"title":"Microhardness and corrosion behavior of thermally treated Fe38Ni36B18Si8 metallic glass","authors":"Maja Ðekić, Jelena Ostojić, Hađer Sinanović, F. Korać, A. Salčinović Fetić","doi":"10.31577/km.20232.3.199","DOIUrl":"https://doi.org/10.31577/km.20232.3.199","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72515394","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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