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Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy

In the present study, Mo was added to Cu–15Ni–8Sn alloy as the fourth element to solve the limitation of service performance of the alloy by composition design. The phase composition, microstructure transformation and mechanical properties of Cu–15Ni–8Sn–xMo (x = 0.3, 0.9, 1.5 wt.%) alloy were syste...

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Autores principales: Zhang, Kai, Zhang, Limin, Shu, Chenglong, Fan, Wenxin, Li, Sha, Yuan, Xia, Zhao, Junsheng, Wang, Yushuai, Wang, Pengfei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9414501/
https://www.ncbi.nlm.nih.gov/pubmed/36013661
http://dx.doi.org/10.3390/ma15165521
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author Zhang, Kai
Zhang, Limin
Shu, Chenglong
Fan, Wenxin
Li, Sha
Yuan, Xia
Zhao, Junsheng
Wang, Yushuai
Wang, Pengfei
author_facet Zhang, Kai
Zhang, Limin
Shu, Chenglong
Fan, Wenxin
Li, Sha
Yuan, Xia
Zhao, Junsheng
Wang, Yushuai
Wang, Pengfei
author_sort Zhang, Kai
collection PubMed
description In the present study, Mo was added to Cu–15Ni–8Sn alloy as the fourth element to solve the limitation of service performance of the alloy by composition design. The phase composition, microstructure transformation and mechanical properties of Cu–15Ni–8Sn–xMo (x = 0.3, 0.9, 1.5 wt.%) alloy were systematically studied by simulation calculation and experimental characterization. The results show that the addition of Mo can improve the as-cast structure of Cu–15Ni–8Sn alloy and reduce segregation and Cu–Mo phase precipitates on the surface with the increase in Mo contents. During solution treatment, Mo can partially dissolve into the matrix, which may be the key to improving the properties of the alloy. Furthermore, the discontinuous precipitation of Sn can be effectively inhibited by adding the appropriate amount of Mo to Cu–15Ni–8Sn alloy, and the hardness of alloy does not decrease greatly after a long-time aging treatment. When Mo content is 0.9 wt.%, the alloy reaches the peak hardness of 384 HV at 4 h of aging. These results provide new ideas for composition optimization of Cu–15Ni–8Sn alloy.
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spelling pubmed-94145012022-08-27 Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy Zhang, Kai Zhang, Limin Shu, Chenglong Fan, Wenxin Li, Sha Yuan, Xia Zhao, Junsheng Wang, Yushuai Wang, Pengfei Materials (Basel) Article In the present study, Mo was added to Cu–15Ni–8Sn alloy as the fourth element to solve the limitation of service performance of the alloy by composition design. The phase composition, microstructure transformation and mechanical properties of Cu–15Ni–8Sn–xMo (x = 0.3, 0.9, 1.5 wt.%) alloy were systematically studied by simulation calculation and experimental characterization. The results show that the addition of Mo can improve the as-cast structure of Cu–15Ni–8Sn alloy and reduce segregation and Cu–Mo phase precipitates on the surface with the increase in Mo contents. During solution treatment, Mo can partially dissolve into the matrix, which may be the key to improving the properties of the alloy. Furthermore, the discontinuous precipitation of Sn can be effectively inhibited by adding the appropriate amount of Mo to Cu–15Ni–8Sn alloy, and the hardness of alloy does not decrease greatly after a long-time aging treatment. When Mo content is 0.9 wt.%, the alloy reaches the peak hardness of 384 HV at 4 h of aging. These results provide new ideas for composition optimization of Cu–15Ni–8Sn alloy. MDPI 2022-08-11 /pmc/articles/PMC9414501/ /pubmed/36013661 http://dx.doi.org/10.3390/ma15165521 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Kai
Zhang, Limin
Shu, Chenglong
Fan, Wenxin
Li, Sha
Yuan, Xia
Zhao, Junsheng
Wang, Yushuai
Wang, Pengfei
Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy
title Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy
title_full Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy
title_fullStr Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy
title_full_unstemmed Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy
title_short Effect of Different Mo Addition on Microstructure and Mechanical Properties of Cu-15Ni-8Sn Alloy
title_sort effect of different mo addition on microstructure and mechanical properties of cu-15ni-8sn alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9414501/
https://www.ncbi.nlm.nih.gov/pubmed/36013661
http://dx.doi.org/10.3390/ma15165521
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