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	Influence of extrusion ratio on microstructure and mechanical properties of Al matrix composites by hot extrusion of powders
	Ma, Guo-Jun1,2; Ding, Yu-Tian1; Jin, Pei-Peng2; Liu, Guo-Long1
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2013
卷号	23期号:7页码:1826-1832
关键词	Aluminum Aluminum metallurgy Aspect ratio Boron compounds Extrusion Fracture Magnesium compounds Microstructure Powder metallurgy Reinforcement
ISSN号	10040609
英文摘要	The Mg2B2O5 whisker reinforced Al matrix composites were fabricated using powder metallurgy routes. The effects of different extrusion ratios on the microstructure and tensile strength of composites were investigated. The results show that the alignment of Mg2B2O5 whisker along the extrusion direction is improved and the aspect ratio decreases with increasing extrusion ratio, meanwhile, the composites exhibit the best mechanical properties at the extrusion ratio of 25:1. Respectively, the yield strength, the tensile strength and the elongation of the extruded composites is 113.5 MPa, 230 MPa and 7.0%. The tensile strength increases by 37% and 25%, in comparison with the aluminum and composites. According to the analysis of fracture, the ductile failure of 6061Al matrix, the reinforcement fracture and the whisker-matrix interface debonding act as the main mechanism of fracture nucleation.
语种	中文
出版者	Central South University of Technology
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151281]
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2.Institute of Metal Materials, Qinghai University, Xining 810016, China
推荐引用方式 GB/T 7714	Ma, Guo-Jun,Ding, Yu-Tian,Jin, Pei-Peng,et al. Influence of extrusion ratio on microstructure and mechanical properties of Al matrix composites by hot extrusion of powders[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2013,23(7):1826-1832.
APA	Ma, Guo-Jun,Ding, Yu-Tian,Jin, Pei-Peng,&Liu, Guo-Long.(2013).Influence of extrusion ratio on microstructure and mechanical properties of Al matrix composites by hot extrusion of powders.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,23(7),1826-1832.
MLA	Ma, Guo-Jun,et al."Influence of extrusion ratio on microstructure and mechanical properties of Al matrix composites by hot extrusion of powders".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 23.7(2013):1826-1832.

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