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Effect of Bi, Sb, and Ti on Microstructure and Mechanical Properties of SAC105 Alloys

The Sn-Ag-Cu (SAC) solder alloys with a low Ag (Ag < 3 wt.%) content have attracted great attention owing to their low cost, increased ability in bulk compliance, and plastic energy dissipation. However, some of their mechanical properties are generally lower than the SAC alloys with a higher Ag...

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Autores principales: Yang, Tixin, Chen, Youyang, You, Kangdong, Dong, Ziqiang, Jia, Yandong, Wang, Gang, Peng, Jubo, Cai, Shanshan, Luo, Xiaobin, Liu, Chen, Wang, Jiajun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9317400/
https://www.ncbi.nlm.nih.gov/pubmed/35888194
http://dx.doi.org/10.3390/ma15144727
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author Yang, Tixin
Chen, Youyang
You, Kangdong
Dong, Ziqiang
Jia, Yandong
Wang, Gang
Peng, Jubo
Cai, Shanshan
Luo, Xiaobin
Liu, Chen
Wang, Jiajun
author_facet Yang, Tixin
Chen, Youyang
You, Kangdong
Dong, Ziqiang
Jia, Yandong
Wang, Gang
Peng, Jubo
Cai, Shanshan
Luo, Xiaobin
Liu, Chen
Wang, Jiajun
author_sort Yang, Tixin
collection PubMed
description The Sn-Ag-Cu (SAC) solder alloys with a low Ag (Ag < 3 wt.%) content have attracted great attention owing to their low cost, increased ability in bulk compliance, and plastic energy dissipation. However, some of their mechanical properties are generally lower than the SAC alloys with a higher Ag content. Adding alloying elements is an effective approach for improving the mechanical properties of the SAC alloys. In this study, the effect of Bi, Sb, and Ti on Sn-1 wt.%Ag-0.5 wt.%Cu (SAC105) solder alloys was investigated. The SAC solders with four compositions: SAC105-1 wt.%Bi, SAC105-1 wt.%Sb, SAC105-1 wt.%Bi-1 wt.%Sb, SAC105-1 wt.%Bi-1 wt.%Sb-0.4 wt.%Ti were prepared. The microstructure and phase compositions were characterized using electron scanning microscopy, and X-ray diffraction. The thermal properties and wettability were also examined. Uniaxial tensile tests and nano-indentation tests were conducted to evaluate the mechanical properties. The results show that adding Bi or Sb could increase the strength of SAC105 alloys mainly due to the solid solution strengthening effect. The creep resistance of SAC105 alloys was also improved with the additions of Bi and Sb. The co-additions of Bi and Sb into SAC105 alloys exhibit an enhanced creep resistance than that calculated by the theoretical calculation. The further addition of Ti into SAC105-1Bi-1Sb alloys demonstrated a much-improved creep resistance, which could be attributed to the synergistic effects of both solid solution strengthening and the precipitation hardening effects.
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spelling pubmed-93174002022-07-27 Effect of Bi, Sb, and Ti on Microstructure and Mechanical Properties of SAC105 Alloys Yang, Tixin Chen, Youyang You, Kangdong Dong, Ziqiang Jia, Yandong Wang, Gang Peng, Jubo Cai, Shanshan Luo, Xiaobin Liu, Chen Wang, Jiajun Materials (Basel) Article The Sn-Ag-Cu (SAC) solder alloys with a low Ag (Ag < 3 wt.%) content have attracted great attention owing to their low cost, increased ability in bulk compliance, and plastic energy dissipation. However, some of their mechanical properties are generally lower than the SAC alloys with a higher Ag content. Adding alloying elements is an effective approach for improving the mechanical properties of the SAC alloys. In this study, the effect of Bi, Sb, and Ti on Sn-1 wt.%Ag-0.5 wt.%Cu (SAC105) solder alloys was investigated. The SAC solders with four compositions: SAC105-1 wt.%Bi, SAC105-1 wt.%Sb, SAC105-1 wt.%Bi-1 wt.%Sb, SAC105-1 wt.%Bi-1 wt.%Sb-0.4 wt.%Ti were prepared. The microstructure and phase compositions were characterized using electron scanning microscopy, and X-ray diffraction. The thermal properties and wettability were also examined. Uniaxial tensile tests and nano-indentation tests were conducted to evaluate the mechanical properties. The results show that adding Bi or Sb could increase the strength of SAC105 alloys mainly due to the solid solution strengthening effect. The creep resistance of SAC105 alloys was also improved with the additions of Bi and Sb. The co-additions of Bi and Sb into SAC105 alloys exhibit an enhanced creep resistance than that calculated by the theoretical calculation. The further addition of Ti into SAC105-1Bi-1Sb alloys demonstrated a much-improved creep resistance, which could be attributed to the synergistic effects of both solid solution strengthening and the precipitation hardening effects. MDPI 2022-07-06 /pmc/articles/PMC9317400/ /pubmed/35888194 http://dx.doi.org/10.3390/ma15144727 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
Yang, Tixin
Chen, Youyang
You, Kangdong
Dong, Ziqiang
Jia, Yandong
Wang, Gang
Peng, Jubo
Cai, Shanshan
Luo, Xiaobin
Liu, Chen
Wang, Jiajun
Effect of Bi, Sb, and Ti on Microstructure and Mechanical Properties of SAC105 Alloys
title Effect of Bi, Sb, and Ti on Microstructure and Mechanical Properties of SAC105 Alloys
title_full Effect of Bi, Sb, and Ti on Microstructure and Mechanical Properties of SAC105 Alloys
title_fullStr Effect of Bi, Sb, and Ti on Microstructure and Mechanical Properties of SAC105 Alloys
title_full_unstemmed Effect of Bi, Sb, and Ti on Microstructure and Mechanical Properties of SAC105 Alloys
title_short Effect of Bi, Sb, and Ti on Microstructure and Mechanical Properties of SAC105 Alloys
title_sort effect of bi, sb, and ti on microstructure and mechanical properties of sac105 alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9317400/
https://www.ncbi.nlm.nih.gov/pubmed/35888194
http://dx.doi.org/10.3390/ma15144727
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