Tensile and Fracture Properties of 15 vol% SiCp/2009Al Composites Fabricated by Hot Isostatic Pressing and Hot Extrusion Processes

• Published in: Acta metallurgica sinica : English letters Vol. 27; no. 5; pp. 875 - 884
• Main Authors: Nie, Junhui, Fan, Jianzhong, Zhang, Shaoming, Wei, Shaohua, Zuo, Tao, Ma, Zili, Xiang, Zhaobing
• Format: Journal Article
• Language: English
• Published: Heidelberg The Chinese Society for Metals 01.10.2014; Springer Nature B.V
• Subjects: Aircraft; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composite materials; Corrosion and Coatings; Ductility; Fracture toughness; Heat treatment; Hot extrusion; Hot isostatic pressing; Interfaces; Interfacial bonding; Materials Science; Mechanical properties; Metallic Materials; Microscopy; Microstructure; Modulus of elasticity; Nanotechnology; Organometallic Chemistry; Particle size; Powder metallurgy; SiC颗粒; Silicon carbide; Sintering; Spectroscopy/Spectrometry; Tribology; Ultimate tensile strength; Yield strength; 体积; 复合材料; 拉伸; 断裂性能; 极限抗拉强度; 热挤压工艺; 热等静压; Aluminum matrix composites; Particle size; Silicon carbide; Facture toughness; Tensile properties
• ISSN: 1006-7191; 2194-1289
• DOI: 10.1007/s40195-014-0127-2

15 vol% silicon carbide particle （SiCp）-reinforced 2009A1 matrix （15 vol% SiCp/2009A1） composites were fabricated by hot isostatic pressing （HIP） and hot extrusion processes. The tensile and fracture properties of 15 vol% SiCp/ 2009Al were studied. The results showed that hot extrusion increased the ultimate tensile strength （UTS）, yield strength （YS）, elongation （EL）, reduction in area （RA）, and fracture toughness of the composites. The heat treatment resulted in the increase in UTS, YS, and fracture toughness, but a decrease in EL and RA. Both hot extrusion and heat treatment had negligible effects on elastic modulus （E）. With the increase of SiCp size, the UTS, YS, and E decreased, but the EL and RA increased. The fracture toughness increased first and then decreased with increasing SiCp size, and when the SiCp size was about 7 μm, the composites obtained the maximum fracture toughness value of 31.74 MPa m^1/2.