Research on fabrication and semisolid processing of semisolid slurries of 7075 aluminum matrix composites reinforced with Nano-sized SiC particles

doi:10.4028/www.scientific.net/SSP.256.81

CORC > 兰州理工大学 > 兰州理工大学

	Research on fabrication and semisolid processing of semisolid slurries of 7075 aluminum matrix composites reinforced with Nano-sized SiC particles
	Jiang, Ju Fu 1,2; Wang, Ying 3; Luo, Shou Jing 1
	2016
会议日期	October 23, 2016 - October 27, 2016
会议地点	Salt Lake City, UT, United states
关键词	Aluminum Aluminum alloys Fabrication Mechanical properties Microstructure Reinforcement Silicon carbide Silicon compounds Tensile strength Wear resistance Aluminum matrix composites Cylindrical composites Dislocation densities Reinforcement particles Rheo forming SiC particles Thixo-forming Ultimate tensile strength
卷号	256
DOI	10.4028/www.scientific.net/SSP.256.81
页码	81-87
英文摘要	Semisolid slurries of 7075 aluminum matrix composite reinforced with nano-sized SiC particles were fabricated by ultrasonic assisted semisolid stirring (UASS) method. Rheoforming and thixoforming of typical cylindrical parts were investigated. The results show that high-quality semisolid slurries with spheroidal solid grain of 38 μm were fabricated by UASS. The nano-sized SiC particles were dispersed uniformly due to transient cavitation and acoustic streaming of ultrasonic wave and high and controllable viscosity of semisolid slurry. Typical cylindrical composite parts with good surface quality and complete filling were rheoformed and thixoformed successfully. Ultimate tensile strength (UTS) of the rheoformed and thixoformed composite parts are enhanced due to addition of nano-sized SiC particles. However, elongation decreased as compared to those of the matrix parts. Maximum UTS of 550 MPa was achieved in the thixoformed composite part with T6 treatment. Increase of dislocation density around the reinforcement particles leads to improvement of the strength and wear resistance of the composite. © 2016 Trans Tech Publications, Switzerland.
会议录	Solid State Phenomena
会议录出版者	Trans Tech Publications Ltd
语种	英语
ISSN号	10120394
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117446]
专题	兰州理工大学材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin; 150001, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin; 150001, China
推荐引用方式 GB/T 7714	Jiang, Ju Fu,Wang, Ying,Luo, Shou Jing. Research on fabrication and semisolid processing of semisolid slurries of 7075 aluminum matrix composites reinforced with Nano-sized SiC particles[C]. 见:. Salt Lake City, UT, United states. October 23, 2016 - October 27, 2016.