Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming

doi:10.1590/1980-5373-MR-2018-0057

	Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming
	Zhang, Xuezheng; Chen, Tijun
	2018
发表期刊	MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
ISSN	1516-1439
卷号	21 期号:4
摘要	Powder thixoforming (PTF) was a promising processing technology that can be used to fabricate high strength particle reinforced aluminum matrix composites, and a pioneer 6061 matrix alloy was fabricated utilizing PTF to investigate its solution treatment behaviors. A comparison study with traditional permanent mold cast (PMC) 6061 alloy disclosed that PTF alloy showed significantly reduced pore amount with only 0.16% (3.50% for PMC alloy). During solution treatment, PTF alloy displayed a much quicker solutionization progress than PMC alloy because of coarse eutectic phases and primary dendrites in latter alloy, its peak values of 14.5%, 241 MPa and 195 MPa in elongation, ultimate tensile strength and yield strength were achieved at 560 degrees C, an enhancement of 81.3%, 33.9% and 97.0%, respectively, compared with as-fabricated alloy. The dissolution of eutectic phases plays a dominative role in the growth of the primary a phases and secondarily primary a phases within 535 degrees C. However, the coarsening after 535 degrees C is subject to a mixture model involving atom diffusion along grain boundaries and through the crystal lattice. The superior tensile strengths of PTF alloy than PMC alloy resulted from decreased grain size, enhanced solid solution strengthening, reduced porosities and decreased harmful effect of insoluble phases in PTF alloy.
关键词	solution treatment powder thixoforming microstructure tensile properties
DOI	10.1590/1980-5373-MR-2018-0057
收录类别	SCI
语种	英语
资助项目	Basic Scientific Fund of Gansu Universities[G2014-07] ; Program for New Century Excellent Talents in University of China[NCET-10-0023] ; Program for Hongliu Outstanding Talents of Lanzhou University of Technology[2012-03]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000432586800001
出版者	UNIV FED SAO CARLOS, DEPT ENGENHARIA MATERIALS
引用统计	被引频次：7[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/32862
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Chen, Tijun
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Zhang, Xuezheng,Chen, Tijun. Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming[J]. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS,2018,21(4).
APA	Zhang, Xuezheng,&Chen, Tijun.(2018).Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming.MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS,21(4).
MLA	Zhang, Xuezheng,et al."Solution Treatment Behaviors of 6061 Aluminum Alloy Prepared by Powder Thixoforming".MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS 21.4(2018).

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