Effects of extrusion and heat treatments on microstructure and mechanical properties of Mg-8Zn-1Al-0.5Cu-0.5Mn alloy

IMR OpenIR

	Effects of extrusion and heat treatments on microstructure and mechanical properties of Mg-8Zn-1Al-0.5Cu-0.5Mn alloy
	Zhu, Shao-zhen; Luo, Tian-jiao; Zhang, Ting-an; Liu, Yun-teng; Yang, Yuan-sheng; Yang, YS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
	2017
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	27 期号:1 页码:73-81
摘要	The effects of extrusion and heat treatments on the microstructure and mechanical properties of Mg-8Zn-1Al-0.5Cu-0.5Mn magnesium alloy were investigated. Bimodal microstructure is formed in this alloy when it is extruded at 230 and 260 degrees C, and complete DRX occurs at the extruding temperature of 290 degrees C. The basal texture of as-extruded alloys is reduced gradually with increasing extrusion temperature due to the larger volume fraction of recrystallized structure at higher temperatures. For the alloy extruded at 290 degrees C, four different heat treatments routes were investigated. After solution + aging treatments, the grains sizes become larger. Finer and far more densely dispersed precipitates are found in the alloy with solution + double-aging treatments compared with alloy with solution + single-aging treatment. Tensile properties are enhanced remarkably by solution + double-aging treatment with the yield strength, tensile strength and elongation being 298 MPa, 348 MPa and 18%, respectively. This is attributed to the combined effects of fine dynamically recrystallized grains and the uniformly distributed finer precipitates.; The effects of extrusion and heat treatments on the microstructure and mechanical properties of Mg-8Zn-1Al-0.5Cu-0.5Mn magnesium alloy were investigated. Bimodal microstructure is formed in this alloy when it is extruded at 230 and 260 degrees C, and complete DRX occurs at the extruding temperature of 290 degrees C. The basal texture of as-extruded alloys is reduced gradually with increasing extrusion temperature due to the larger volume fraction of recrystallized structure at higher temperatures. For the alloy extruded at 290 degrees C, four different heat treatments routes were investigated. After solution + aging treatments, the grains sizes become larger. Finer and far more densely dispersed precipitates are found in the alloy with solution + double-aging treatments compared with alloy with solution + single-aging treatment. Tensile properties are enhanced remarkably by solution + double-aging treatment with the yield strength, tensile strength and elongation being 298 MPa, 348 MPa and 18%, respectively. This is attributed to the combined effects of fine dynamically recrystallized grains and the uniformly distributed finer precipitates.
部门归属	[zhu, shao-zhen ; luo, tian-jiao ; yang, yuan-sheng] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [zhu, shao-zhen] northeastern univ, sch mat sci & engn, shenyang 110819, peoples r china ; [zhang, ting-an] northeastern univ, minist educ, key lab ecol met multimetall mineral, shenyang 110819, peoples r china ; [liu, yun-teng] shandong key lab high strength lightweight metall, jinan 250014, peoples r china
关键词	Magnesium Alloy Extrusion Microstructure Texture Heat Treatment Mechanical Properties
学科领域	Metallurgy & Metallurgical Engineering
资助者	National Basic Research Program of China [2013CB632205]; National Natural Science Foundation of China [51274184]
收录类别	SCI
语种	英语
WOS记录号	WOS:000394413200008
引用统计	被引频次：13[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/321006/78368
专题	中国科学院金属研究所
通讯作者	Yang, YS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Zhu, Shao-zhen,Luo, Tian-jiao,Zhang, Ting-an,et al. Effects of extrusion and heat treatments on microstructure and mechanical properties of Mg-8Zn-1Al-0.5Cu-0.5Mn alloy[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2017,27(1):73-81.
APA	Zhu, Shao-zhen,Luo, Tian-jiao,Zhang, Ting-an,Liu, Yun-teng,Yang, Yuan-sheng,&Yang, YS .(2017).Effects of extrusion and heat treatments on microstructure and mechanical properties of Mg-8Zn-1Al-0.5Cu-0.5Mn alloy.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,27(1),73-81.
MLA	Zhu, Shao-zhen,et al."Effects of extrusion and heat treatments on microstructure and mechanical properties of Mg-8Zn-1Al-0.5Cu-0.5Mn alloy".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 27.1(2017):73-81.