Ni含量对Cu-Ni-Ag合金固溶强化行为的影响

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Abstract In this paper, different Ni elements were added in the Cu-Ni-Ag alloy, and gas atomized alloy powders were used to manufacture bulk sample by hot pressing, rolling and annealing. The results indicated that the Cu-Ni-Ag alloy with high strength and good plasticity has been successfully fabricated by composition and microstructure optimization. The main strengthening mechanisms of Cu-Ni-Ag alloy are solution strengthening and dislocation strengthening. The solution strengthening effect of Ni is significant, but the solution solubility of Ag in the alloy is reduced by Ni. The number of Ag-rich precipitates increases with the increase of Ni content. The precipitated phase can further enhance the strength by pinning grain boundaries and impeding dislocation movement.

Key words： Cu-Ni-Ag alloy solution strengthening dislocations strengthening precipitation strengthening

Received: 19 January 2021 Published: 21 July 2021

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TG146.1⁺1

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	Articles by authors
	WANG Jingying
	LÜ Xinqun
	CHEN Shiqi
	GAO Yang
	LIU Yong

Cite this article:

WANG Jingying,LÜ Xinqun,CHEN Shiqi, et al. Effect of Ni content on the solid solution strengthening behavior of Cu-Ni-Ag alloys[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(3): 263-271.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2021/V26/I3/263

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