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":"25 1","pages":""},"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}
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Xiang Gao, Wei Li, Yi Fan, Jiasheng Zou, Keng Yan, Jiaqing Tang, Kun Liu
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Ye Wang, Xiuyu Gao, Bo Jiang, Dongdong Zhu, Maoliang Hu Hu, Wentao Jiang
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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":"41 1","pages":"0"},"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":"4 1","pages":"0"},"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":"8 2 1","pages":""},"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":"26 1","pages":""},"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}
Rashid Ali, Muhib ur Rehman, Osama Zia, Yasir M. Saeed, A. Hassan, M. Tariq, A. Zahoor, R. N. Shahid, N. Tariq, F. Ali, Owaisur Rehman Shah, Hasan Bin Awais
{"title":"Microstructural and mechanical behavior of unique aluminum matrix composites reinforced with pre-synthesized Al/Cu core-shell particulates","authors":"Rashid Ali, Muhib ur Rehman, Osama Zia, Yasir M. Saeed, A. Hassan, M. Tariq, A. Zahoor, R. N. Shahid, N. Tariq, F. Ali, Owaisur Rehman Shah, Hasan Bin Awais","doi":"10.31577/km.2023.3.189","DOIUrl":"https://doi.org/10.31577/km.2023.3.189","url":null,"abstract":"","PeriodicalId":49937,"journal":{"name":"Kovove Materialy-Metallic Materials","volume":"74 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81536611","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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