Mg-Zn系合金沉淀硬化研究进展

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Abstract Mg-Zn system alloys have become one of the most promising structural materials owing to the significantly precipitation strengthening. The impact of precipitation strengthening can be further improved by increasing the precipitation density and decreasing the particle spacing, which can be achieved by microalloying to control the precipitation behavior. Microalloyed elements include rare earth elements, alkaline earth elements and other elements. Rare earth elements can increase the density of precipitation, alkaline earth elements can refine the precipitation particles as well as increase precipitation density, other elements can increase the nucleation rate of precipitation and accelerate precipitate process. In pre-sent paper, the research progress of precipitation thermodynamics and precipitation sequence of Mg-Zn system alloys are reviewed, the effects of microalloyed elements on precipitation strengthening are summarized, and research direction of precipitation strengthening of Mg-Zn alloys is prospected.

Key words： Mg-Zn alloys thermodynamics precipitation microalloying

Published: 01 July 2020

CLC number:

TG146.2

Fund:This work was financially supported by the National Natural Science Foundation of China (51571086), Henan Polytechnic University Postdoctoral Science Foundation (B2015-14).

About author:: Shimeng Wang, a postgraduate student, graduated from Anyang Institute of Technology in 2017 with a bachelor's degree. Now he is a postgraduate student in Henan Polytechnic University, the research is carried out on magnesium alloys containing Zn and Sn ; Wenpeng Yang, received his Ph.D. degree in mate-rials science and engineering from Xi'an University of Technology in 2012. He is currently a lecturer and as master's tutor at School of Materials Science and Engineering in Henan Polytechnic University. He is mainly engaged in the research and application of magnesium alloys.

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	WANG Shimeng
	YANG Wenpeng
	CUI Hongbao
	GUO Xuefeng
	SUN Yao

Cite this article:

WANG Shimeng,YANG Wenpeng,CUI Hongbao, et al. Research Progress on Precipitation Hardening of Mg-Zn System Alloys[J]. Materials Reports, 2020, 34(Z1): 312-315.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2020/V34/IZ1/312

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