Machine learning assisted design of high-strength Sn-3.8Ag-0.7Cu alloys with the co-additions of Bi and In

被引:9
作者
Dong, Ziqiang [1 ]
You, Kangdong [1 ]
Yuan, Hao [1 ]
Wu, Yanjie [1 ]
Jia, Yandong [2 ]
Wang, Gang [2 ]
Peng, Jubo [3 ]
Cai, Shanshan [3 ]
Luo, Xiaobin [3 ]
Liu, Chen [3 ]
Wang, Jiajun [3 ]
机构
[1] Shanghai Univ, Mat Genome Inst, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Inst Mat, Shanghai 200444, Peoples R China
[3] Yunnan Tin Grp Holding Co Ltd, Kunming 650000, Peoples R China
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2022年 / 861卷
关键词
Sn-based alloys; Alloying elements; Machine learning; Mechanical properties; LEAD-FREE SOLDER; MECHANICAL-PROPERTIES; INTERMETALLIC COMPOUNDS; SN-3.0AG-0.5CU SOLDER; THERMAL-PROPERTIES; HIGH-TEMPERATURE; MICROSTRUCTURE; NI; CORROSION; PROPERTY;
D O I
10.1016/j.msea.2022.144257
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A Machine Learning (ML) integrated process was utilized to optimize the properties of Sn-Ag-Cu (SAC) alloys. Bi and In were selected as the key alloying elements to optimize the mechanical properties of SAC387 based alloys. A virtual sample space was constructed for SAC387-xBi-yIn alloys using a machine learning model based on Gradient Boosting Decision Tree (GBDT) algorism. A series of virtual samples were selected and experimentally validated. Sample SAC387-3.5 wt%Bi-2.8 wt%In demonstrated an outstanding mechanical property, yielding a significant improvement in tensile strength (85.8% improvement vs. SAC387, 106% improvement vs. SAC305) with an acceptable ductility (>20%). The synergistic effects of co-additions of Bi and In on the properties of SAC387 based alloys were elucidated. The experimental results show good consistency with the ML predictions, proving that ML can be used as a powerful tool for designing lead-free solder alloys with optimized properties.
引用
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页数:17
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