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

被引：49

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.

引用

页数：11

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