Effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Sip/ZA27 composites

doi:10.1504/IJMPT.2017.080557

	Effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Sip/ZA27 composites
	Wang, B.; Chen, T.J.; Zhang, S.Q.
刊名	International Journal of Materials and Product Technology
	2017
卷号	54 期号:1 页码:126-146
关键词	Fracture Industrial heating Microstructure Particle size Tensile properties Tensile strength Load transfer mechanism Reheating temperature Segregation degrees Size and shape Solidification behaviour Strengthening mechanisms Thixo-forming Ultimate tensile strength
ISSN号	02681900
DOI	10.1504/IJMPT.2017.080557
英文摘要	The effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Sip/ZA27 composites have been investigated. Simultaneously, the effect of the Si particles on the tensile properties has also been studied. The results indicate that the two parameters have similar effects on the composition, fraction and segregation degree of the liquid phase and the size and shape of the Si particles, and thus the solidification behaviour, the resulting microstructure, the fracture regime and the tensile properties. But in contrast, the effects of the reheating temperature are larger than those of the reheating time; the effects of the changes in the Si particle size and shape are smaller than those of the changes in the other factors. The optimum tensile properties, the ultimate tensile strength of 363 MPa and the elongation of 0.97%, can be obtained after being thixoformed under reheating for 70 min at 465°C. The Si particles exhibit two behaviours during tensile testing; namely fragmentation and interfacial de-bonding. This indicates that the load transfer mechanism is the main strengthening mechanism of the Si particles. © 2017 Inderscience Enterprises Ltd.
WOS研究方向	Materials Science
语种	英语
出版者	Inderscience Publishers
WOS记录号	WOS:000396481600009
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114008]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, B.,Chen, T.J.,Zhang, S.Q.. Effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Sip/ZA27 composites[J]. International Journal of Materials and Product Technology,2017,54(1):126-146.
APA	Wang, B.,Chen, T.J.,&Zhang, S.Q..(2017).Effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Sip/ZA27 composites.International Journal of Materials and Product Technology,54(1),126-146.
MLA	Wang, B.,et al."Effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Sip/ZA27 composites".International Journal of Materials and Product Technology 54.1(2017):126-146.