Effect of SiCp volume fraction on the microstructure and tensile properties of SiCp/2024 Al-based composites prepared by powder thixoforming

doi:10.1557/jmr.2016.293

	Effect of SiCp volume fraction on the microstructure and tensile properties of SiCp/2024 Al-based composites prepared by powder thixoforming
	Li, Pubo; Chen, Tijun
刊名	JOURNAL OF MATERIALS RESEARCH
	2016-09
卷号	31 期号:18 页码:2850-2862
关键词	Aluminum alloys Ceramic matrix composites Composite materials Cracks Fracture Microstructure Particle reinforced composites Particle size Powder metals Silicon Silicon carbide Structure (composition) Tensile strength Tensile testing Volume fraction Al based composite Ceramic particle Liquid fraction Powder processing Primary particle size Solidified structures Thixo-forming Ultimate tensile strength
ISSN号	0884-2914
DOI	10.1557/jmr.2016.293
英文摘要	A new technology for preparing and forming ceramic particle-reinforced metal matrix composites, powder thixoforming, has been proposed. The effect of the SiCp volume fraction on the microstructure and tensile properties of thixoforged SiCp/2024 Al-based composites was studied. The results indicated that the volume fraction affected the effective liquid fraction, primary particle size and shape, and microstructure compactness. A composite with 10 vol% SiCp had the best comprehensive tensile properties, an ultimate tensile strength of 388 MPa, a yield strength of 295 MPa, and an elongation of 3.8%, representing increases of 29.3 and 33.5%, and a decrease of 63.5%, respectively, compared with the values for the thixoforged 2024 Al matrix alloy. During tensile testing, cracks were initiated in the secondary solidified structures, the debonded SiC/Al interface, and the cracked SiCp. For composites containing over 10 vol% SiCp, agglomerated SiCp acted as additional zones of crack initiation.
资助项目	Basic Scientific Fund of Gansu University[G2014-07] ; Program for New Century Excellent Talents of the University of China[NCET-10-0023]
WOS研究方向	Materials Science
语种	英语
出版者	CAMBRIDGE UNIV PRESS
WOS记录号	WOS:000385675200013
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33608]
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	Li, Pubo; Chen, Tijun
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	Li, Pubo,Chen, Tijun. Effect of SiCp volume fraction on the microstructure and tensile properties of SiCp/2024 Al-based composites prepared by powder thixoforming[J]. JOURNAL OF MATERIALS RESEARCH,2016,31(18):2850-2862.
APA	Li, Pubo,&Chen, Tijun.(2016).Effect of SiCp volume fraction on the microstructure and tensile properties of SiCp/2024 Al-based composites prepared by powder thixoforming.JOURNAL OF MATERIALS RESEARCH,31(18),2850-2862.
MLA	Li, Pubo,et al."Effect of SiCp volume fraction on the microstructure and tensile properties of SiCp/2024 Al-based composites prepared by powder thixoforming".JOURNAL OF MATERIALS RESEARCH 31.18(2016):2850-2862.