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	Effects of reheating temperature and time on microstructure and tensile properties of thixoforged AZ63 magnesium alloy
	Chen, T.J.; Huang, L.K.; Huang, X.F.; Ma, Y.; Hao, Y.
	2014
关键词	Fracture Fracture testing Industrial heating Microstructure Particle size Plastic deformation Tensile properties Tensile strength Tensile testing Textures AZ63 magnesium alloy Liquid compositions Primary particle size Processing parameters Reheating temperature Solidification behaviour Thixo-forming Ultimate tensile strength
卷号	30
期号	1
DOI	10.1179/1743284713Y.0000000317
页码	96-108
英文摘要	The effects of two main processing parameters such as reheating temperature and reheating time on microstructure and tensile properties of thixoforged AZ63 magnesium alloy have been investigated. The results indicate that these two parameters all have large effects on the microstructure and tensile properties. However, in contrast, the effects of the reheating temperature on liquid fraction and liquid composition of semisolid ingot, and thus the subsequent solidification behaviour and plastic deformation during thixoforging, are larger than those of the reheating time. Therefore, the effects of the former parameter on the microstructure and tensile properties are relatively larger than those of the latter parameter. It is also just this reason that the fracture regime during tensile testing varies as the reheating temperature rises, while the regime always maintains transgranular mode with the variation of the reheating time. Stress concentration that results from the plastic deformation obviously affects the tensile properties, while the primary particle size or grain size only has small effect. The appropriate reheating technique is the heating for 60 min at 595°C when mould temperature is maintained at 350°C. The ultimate tensile strength and elongation of the resulting alloy are up to 310 MPa and 10·7% respectively. © 2014 Institute of Materials, Minerals and Mining.
会议录	Materials Science and Technology (United Kingdom)
会议录出版者	Maney Publishing
语种	英语
ISSN号	02670836
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000336719900018
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117306]
专题	材料科学与工程学院
作者单位	Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Chen, T.J.,Huang, L.K.,Huang, X.F.,et al. Effects of reheating temperature and time on microstructure and tensile properties of thixoforged AZ63 magnesium alloy[C]. 见:.

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