Effect of Zn content on microstructure, mechanical properties and fracture behavior of Mg-Mn alloy

IMR OpenIR

	Effect of Zn content on microstructure, mechanical properties and fracture behavior of Mg-Mn alloy; Effect of Zn content on microstructure, mechanical properties and fracture behavior of Mg-Mn alloy
	D. S. Yin; E. L. Zhang; S. Y. Zeng
	2009 ; 2009
发表期刊	China Foundry ; China Foundry
ISSN	1672-6421 ; 1672-6421
卷号	6 期号:1 页码:43-47
摘要	The optical microscope, scanning electron microscope and universal testing machine are used to investigate the effect of Zn content on the microstructure, mechanical properties and fracture behavior of Mg-Mn-Zn alloy. The results indicate that fine (Mg, Mn, Al)-containing phases are distributed uniformly in the Mg-Mn alloy matrix, while small amount of (Mg, Zn)-containing phases are formed in the matrix and the grain boundary becomes coarse when 1wt.% Zn is added. As the Zn content increases, the amount of (Mg, Zn)-containing phases increases, and the grain boundary becomes coarser. When the Zn content is between 3wt.%-5wt.%, slender (Mg, Zn)-containing phases precipitate at the grain boundary. The addition of Zn could reduce the grain size and enhance the mechanical properties of the alloy matrix, and both of the effects can be enhanced by increasing the Zn content further more. When the Zn content is more than 3wt.%, grain size stops decrease, the strength cannot be improved any more and elongation decreases significantly. The fracture behavior of Mg-Mn alloy appears to be cleavage fracture, and transforms into quasi-cleavage fracture as Zn is added. When Zn content exceeded 3wt.%, large amount of (Mg, Zn)-containing phases appear on the fracture face, and act as the crack sources.; The optical microscope, scanning electron microscope and universal testing machine are used to investigate the effect of Zn content on the microstructure, mechanical properties and fracture behavior of Mg-Mn-Zn alloy. The results indicate that fine (Mg, Mn, Al)-containing phases are distributed uniformly in the Mg-Mn alloy matrix, while small amount of (Mg, Zn)-containing phases are formed in the matrix and the grain boundary becomes coarse when 1wt.% Zn is added. As the Zn content increases, the amount of (Mg, Zn)-containing phases increases, and the grain boundary becomes coarser. When the Zn content is between 3wt.%-5wt.%, slender (Mg, Zn)-containing phases precipitate at the grain boundary. The addition of Zn could reduce the grain size and enhance the mechanical properties of the alloy matrix, and both of the effects can be enhanced by increasing the Zn content further more. When the Zn content is more than 3wt.%, grain size stops decrease, the strength cannot be improved any more and elongation decreases significantly. The fracture behavior of Mg-Mn alloy appears to be cleavage fracture, and transforms into quasi-cleavage fracture as Zn is added. When Zn content exceeded 3wt.%, large amount of (Mg, Zn)-containing phases appear on the fracture face, and act as the crack sources.
部门归属	[yin dongsong; zeng songyan] harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china. [zhang erlin] chinese acad sci, inst met res, shenyang 110016, peoples r china.;yin, ds (reprint author), harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china;dongsongyin@126.com ; [yin dongsong; zeng songyan] harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china. [zhang erlin] chinese acad sci, inst met res, shenyang 110016, peoples r china.;yin, ds (reprint author), harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china;dongsongyin@126.com
关键词	Zinc Zinc Magnesium Alloy Magnesium Alloy Microstructure Microstructure Mechanical Properties Mechanical Properties Fracture Fracture Behavior Behavior Magnesium Magnesium
URL	查看原文 ; 查看原文
WOS记录号	WOS:000264425400008 ; WOS:000264425400008
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32505
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. S. Yin,E. L. Zhang,S. Y. Zeng. Effect of Zn content on microstructure, mechanical properties and fracture behavior of Mg-Mn alloy, Effect of Zn content on microstructure, mechanical properties and fracture behavior of Mg-Mn alloy[J]. China Foundry, China Foundry,2009, 2009,6, 6(1):43-47, 43-47.
APA	D. S. Yin,E. L. Zhang,&S. Y. Zeng.(2009).Effect of Zn content on microstructure, mechanical properties and fracture behavior of Mg-Mn alloy.China Foundry,6(1),43-47.
MLA	D. S. Yin,et al."Effect of Zn content on microstructure, mechanical properties and fracture behavior of Mg-Mn alloy".China Foundry 6.1(2009):43-47.