Effect of heat treatment on the microstructure and properties ofin-situMg(2)Si reinforced hypereutectic Al-18%Si matrix composites

doi:10.1088/2053-1591/abaea2

	Effect of heat treatment on the microstructure and properties ofin-situMg(2)Si reinforced hypereutectic Al-18%Si matrix composites
	Xu, Kai 3; Wang, Jianjun 2; Zhang, Shuquan 1
刊名	MATERIALS RESEARCH EXPRESS
	2020-08-01
卷号	7
关键词	heat treatment in-situMg(2)Si hypereutectic Al-18%Si matrix composites microstructure properties
DOI	10.1088/2053-1591/abaea2
通讯作者	Xu, Kai(xk@ahcme.edu.cn)
英文摘要	Thein situpreparation of particle reinforced metal matrix composites (PRMMCs) can prevent the particle surface from pollution, improve the wettability of particles and matrix metals, and reduce the production cost of composites. In this paper,in situMg(2)Si reinforced hypereutectic Al-18%Si matrix composites were prepared by adding an appropriate amount of magnesium. However, the Mg2Si enhanced phase often has developed dendrites, which are easy to cause stress concentration and cut apart the matrix, resulting in the decrease of the mechanical properties of the material. Therefore, in this study, necessary solution treatment and aging treatment were carried out, and the effect of heat treatment on the microstructure and properties of the prepared composites was discussed. The results showed that thein situMg(2)Si reinforced Al-18%Si matrix composites with an ideal microstructure could be prepared by adding 4% Mg. After solution treatment at 545 degrees C for 8 h and aging treatment at 170 2 degrees C for 8 h, the coarse dendrites of Mg2Si were broke and granulated, which improved the strength, hardness and wear resistance of the composites. Compared with the common as cast hypereutectic Al-18%Si alloy, the hardness and the strength of the prepared composites were increased by 30% and 46%, respectively. Besides, the granulation process of thein situMg(2)Si phase was explained with the Gibbs-Thomson theorem in this paper.
资助项目	Anhui Province University Natural Science Key Research Project[KJ2017A750]
WOS关键词	AL-SI ALLOYS ; MECHANICAL-PROPERTIES ; IN-SITU ; BEHAVIOR
WOS研究方向	Materials Science
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000563189100001
资助机构	Anhui Province University Natural Science Key Research Project
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/70567]
专题	中国科学院合肥物质科学研究院
通讯作者	Xu, Kai
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 341000, Peoples R China 2.Anhui Tech Coll Mech & Elect Engn, Coll Mech Engn, Wuhu 241000, Peoples R China 3.Anhui Tech Coll Mech & Elect Engn, Sch Aeronaut & Mat, Wuhu 241000, Peoples R China
推荐引用方式 GB/T 7714	Xu, Kai,Wang, Jianjun,Zhang, Shuquan. Effect of heat treatment on the microstructure and properties ofin-situMg(2)Si reinforced hypereutectic Al-18%Si matrix composites[J]. MATERIALS RESEARCH EXPRESS,2020,7.
APA	Xu, Kai,Wang, Jianjun,&Zhang, Shuquan.(2020).Effect of heat treatment on the microstructure and properties ofin-situMg(2)Si reinforced hypereutectic Al-18%Si matrix composites.MATERIALS RESEARCH EXPRESS,7.
MLA	Xu, Kai,et al."Effect of heat treatment on the microstructure and properties ofin-situMg(2)Si reinforced hypereutectic Al-18%Si matrix composites".MATERIALS RESEARCH EXPRESS 7(2020).