Investigation on microstructure and mechanical properties of Friction Stir Welded AA6061-4.5Cu-10SiC composite

2nd International Manufacturing Engineering Conference; 3rd Asia-Pacific Conference on Manufacturing Systems

Herbert, Mervin A.^1 ; Shettigar, Arun Kumar^2 ; Nigalye, Akshay V.^3 ; Rao, Shrikantha S.^1

Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Karnataka

575025, India^1

Department of Mechatronics Engineering, Manipal Institute of Technology, Manipal, Karnataka

576104, India^2

Department of Mechanical Engineering, Goa College of Engineering, Goa, India^3

关键词: Fabrication method;    Friction stir welding(FSW);    Joint efficiencies;    Micro-structural characterization;    Microstructure and mechanical properties;    Small particles;    Stir casting method;    Uniform distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/114/1/012125/pdf
DOI  :  10.1088/1757-899X/114/1/012125

来源: IOP

【 摘 要 】

The application of Metal Matrix Composites (MMCs) is restricted by the availability of properly developed fabrication methods. The main challenge here is the fabrication and welding of MMCs in a cost effective way. In the present study, synthesis of AA6061-4.5%Cu- 10%SiC composite was done by stir casting method. The joining of MMCs was performed by Friction Stir Welding (FSW) using a combination of square and threaded profile pin tool (CSTPP). Further, the welded composite was evaluated for microstructure and joint properties. The microstructural characterization showed uniform distribution of refined fine grains and numerous small particles at nugget zone. The hardness at the stir zone is higher than that of the base material. The tensile test revealed 96% joint efficiency in transverse direction.