Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite

doi:10.1016/j.jallcom.2015.02.147

CORC > 兰州理工大学 > 兰州理工大学

	Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite
	Cheng, F. L.; Chen, T. J.; Qi, Y. S.; Zhang, S. Q.; Yao, P.
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2015-07-05
卷号	636 页码:48-60
关键词	Composite Thixoforming Solution treatment Microstructure Mechanical properties
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2015.02.147
英文摘要	The studies on heat treatment of thixoformed magnesium based composites are very scarce. To verify the heat treatment behaviors of this kind of materials, the effects of solution treatment on microstructure and mechanical properties of thixoformed Mg(2)Sip/AM60B composite have been investigated. The results indicate that the microstructure evolution includes two stages during solutionizing at 415 degrees C. The first stage (0-2 h) refers to the rapid dissolution of eutectic beta (Mg17Al12) phases and the resulted fast coarsening of both the primary alpha-Mg particles and secondarily primary alpha-Mg grains. The second stage (after 2 h) is regarded as the normal growth of the two kinds of grains through mergence. Due to the adding of Mg2Si phase, the microstructure evolution is slowed. The tensile properties first increase as the time increases from 0 h to 6 h due to the decrease of b phase harmfulness, increased solid solution strengthening and composition homogenization, and then decrease because of the grain coarsening. Correspondingly, the fracture regime changes from intergranular regime in turn to transgranular and intergranular regime. The effects of solution temperature are similar to those with the solution time. After being solutionized at 430 degrees C for 6 h, the tensile properties are up to the highest values, UTS of 277 MPa and elongation of 18.5%, increased by about 20% and 135% respectively compared with those of the as-thixoformed composite. (C) 2015 Elsevier B.V. All rights reserved.
资助项目	National Basic Research Program of China[G2010CB635106] ; Program for New Century Excellent Talents in University of China[NCET-10-0023]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000351836600009
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/34018]
专题	兰州理工大学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, T. J.
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Cheng, F. L.,Chen, T. J.,Qi, Y. S.,et al. Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2015,636:48-60.
APA	Cheng, F. L.,Chen, T. J.,Qi, Y. S.,Zhang, S. Q.,&Yao, P..(2015).Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite.JOURNAL OF ALLOYS AND COMPOUNDS,636,48-60.
MLA	Cheng, F. L.,et al."Effects of solution treatment on microstructure and mechanical properties of thixoformed Mg2Sip/AM60B composite".JOURNAL OF ALLOYS AND COMPOUNDS 636(2015):48-60.