A Comparative Study on Permanent Mold Cast and Powder Thixoforming 6061 Aluminum Alloy and Sicp/6061Al Composite: Microstructures and Mechanical Properties | |
Zhang, Xuezheng; Chen, Tijun; Qin, He; Wang, Chong | |
刊名 | MATERIALS
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2016-06 | |
卷号 | 9期号:6 |
关键词 | powder thixoforming permanent mould cast SiCp/6061Al composite microstructure tensile properties strengthening mechanisms |
ISSN号 | 1996-1944 |
DOI | 10.3390/ma9060407 |
英文摘要 | Microstructural and mechanical characterization of 10 vol% SiC particles (SiCp) reinforced 6061 Al-based composite fabricated by powder thixoforming (PTF) was investigated in comparison with the PTF and permanent mold cast (PMC) 6061 monolithic alloys. The results reveal that the microstructure of the PMC alloy consists of coarse and equiaxed alpha dendrites and interdendritic net-like eutectic phases. However, the microstructure of the PTF composite, similar to that of the PTF alloy, consists of near-spheroidal primary particles and intergranular secondarily solidified structures except SiCP, which are distributed in the secondarily solidified structures. The eutectics amount in the PTF materials is distinctly lower than that in the PMC alloy, and the microstructures of the former materials are quite compact while that of the latter alloy is porous. Therefore, the PTF alloy shows better tensile properties than the PMC alloy. Owing to the existence of the SiC reinforcing particles, the PTF composite attains an ultimate tensile strength and yield strength of 230 MPa and 128 MPa, representing an enhancement of 27.8% and 29.3% than those (180 MPa and 99 MPa) of the PTF alloy. A modified model based on three strengthening mechanisms was proposed to calculate the yield strength of the PTF composite. The obtained theoretical results were quite consistent with the experimental data. |
资助项目 | Basic Scientific Fund of Gansu Universities[G2014-07] ; Program for New Century Excellent Talents in University of China[NCET-10-0023] ; Program for Hongliu Outstanding Talents of Lanzhou University of Technology[2012-03] |
WOS研究方向 | Materials Science |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000378630600006 |
状态 | 已发表 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.223/handle/2XXMBERH/33674] ![]() |
专题 | 材料科学与工程学院 机电工程学院 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 | 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 | Zhang, Xuezheng,Chen, Tijun,Qin, He,et al. A Comparative Study on Permanent Mold Cast and Powder Thixoforming 6061 Aluminum Alloy and Sicp/6061Al Composite: Microstructures and Mechanical Properties[J]. MATERIALS,2016,9(6). |
APA | Zhang, Xuezheng,Chen, Tijun,Qin, He,&Wang, Chong.(2016).A Comparative Study on Permanent Mold Cast and Powder Thixoforming 6061 Aluminum Alloy and Sicp/6061Al Composite: Microstructures and Mechanical Properties.MATERIALS,9(6). |
MLA | Zhang, Xuezheng,et al."A Comparative Study on Permanent Mold Cast and Powder Thixoforming 6061 Aluminum Alloy and Sicp/6061Al Composite: Microstructures and Mechanical Properties".MATERIALS 9.6(2016). |
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