Effects of processing parameters on microstructure and mechanical properties of powder-thixoforged 6061 aluminum alloy

doi:10.1016/S1003-6326(15)63655-X

	Effects of processing parameters on microstructure and mechanical properties of powder-thixoforged 6061 aluminum alloy
	Chen, Yu-shi; Chen, Ti-jun; Zhang, Su-qing; Li, Pu-bo
	2015-03
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	25 期号:3 页码:699-712
摘要	A new processing technology, powder thixoforming, for preparation of particle reinforced metal matrix composites was proposed and 6061 aluminum alloy was prepared by powder thixoforging. 6061 ingots were first prepared by cold-pressing the atomized 6061 alloy powders, and then the ingots were partially remelted followed by thixoforging. The effects of reheating time, mould temperature and reheating temperature on microstructure and mechanical properties of the thixoforged alloys were investigated. The results indicate that all of the three parameters have large effects on the microstructure and mechanical properties. Owing to the microstructure changes, the fracture regime varies with the processing parameters. Furthermore, cracks always initiate from shrinkage porosities and inclusions, and then propagate either along the secondarily solidified structures or primary particles. The ultimate tensile strength, elongation and hardness of the resulting alloy are up to 196 MPa, 11.0% and HV 55.7 respectively.
关键词	6061 aluminum alloy semisolid powder thixoforging mechanical properties tensile properties hardness microstructure
DOI	10.1016/S1003-6326(15)63655-X
收录类别	SCI ; SCIE
语种	英语
资助项目	Basic Scientific Fund of Gansu University, China[2014-07] ; Program for New Century Excellent Talents in University of China[NCET-10-0023]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000352451700004
出版者	ELSEVIER SCIENCE BV
EI入藏号	20151600751668
EI主题词	Aluminum alloys
EI分类号	531 Metallurgy and Metallography - 534.2 Foundry Practice - 535.2.2 Metal Forming Practice - 541.2 Aluminum Alloys - 642.1 Process Heating - 951 Materials Science
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/34103
专题	材料科学与工程学院
通讯作者	Chen, Ti-jun
作者单位	Lanzhou Univ Technol, Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Chen, Yu-shi,Chen, Ti-jun,Zhang, Su-qing,et al. Effects of processing parameters on microstructure and mechanical properties of powder-thixoforged 6061 aluminum alloy[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2015,25(3):699-712.
APA	Chen, Yu-shi,Chen, Ti-jun,Zhang, Su-qing,&Li, Pu-bo.(2015).Effects of processing parameters on microstructure and mechanical properties of powder-thixoforged 6061 aluminum alloy.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,25(3),699-712.
MLA	Chen, Yu-shi,et al."Effects of processing parameters on microstructure and mechanical properties of powder-thixoforged 6061 aluminum alloy".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 25.3(2015):699-712.

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