Effects of P addition on spinodal decomposition and discontinuous precipitation in Cu-15Ni-8Sn alloy

被引：44
作者：
Guo, Chengjun [1 ]
Shi, Yufan [1 ]
Chen, Jinshui [1 ]
Xiao, Xiangpeng [1 ,2 ]
Liu, Baixiong [1 ]
Liu, Jinpin [1 ]
Yang, Bin [1 ]
机构：
[1] Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Peoples R China
[2] Jiangxi Adv Copper Ind Res Inst, Yingtan 335000, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2021年 / 171卷
基金：
中国国家自然科学基金;
关键词：
P addition; Cu-15Ni-8Sn; Atomic size factor; Precipitation free-zone; Discontinuous precipitation;
D O I：
10.1016/j.matchar.2020.110760
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and subsequent phase transformations of Cu-15Ni-8Sn can get affected by a minor addition of phosphorus (P). For the first time, the hexagonal Ni10SnP3 phase was observed in the Cu-15M-8Sn-0.2P alloy using high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and transmission electron microscope (TEM). Further, the atomic size factor increased which was responsible for the promotion of the spinodal decomposition and ordering in Cu-15Ni-8Sn alloy with P addition. Moreover, the Ni10SnP3 phase precipitated along the grain boundary, and the precipitation free-zone was observed near the grain boundary. Nonetheless, these were the primary causes observed for the inhibition of discontinuous precipitation (DP) with P addition.
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页数：11
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