Evaluation of properties and FEM Model of the Friction welded mild Steel-Al6061-Alumina

Materials Research

Hazman Seli²  Mokhtar Awang¹  Ahmad Izani Md. Ismail¹  Endri Rachman¹  Zainal Arifin Ahmad¹ 

[1] ,Universiti Teknologi MARA Sarawak Faculty of Computer and Mathematical Sciences Sarawak,Malaysia

关键词: friction welding;    intermetallic;    FE model;    interface;    bending strength;   

DOI  :  10.1590/S1516-14392012005000178

来源: SciELO

【 摘 要 】

Evaluation of mechanical and interfacial properties of friction welded alumina-mild steel rods with the use of Al6061 sheet are presented in this work. SEM, EDX analysis, hardness and bending strength tests were conducted. The bonds were attained through interfacial interlocking and intermetalllic phase formation with average bending strengths in the range of 40 to 200 MPa and insignificant hardness change in the parent alumina and mild steel. A preliminary simulation was made to predict the deformation, stress, strain and temperature distribution during the joining operation using a fully coupled thermo-mechanical FE model. The aluminum alloy metal being rubbed was simulated using a phenomenological Johnson-Cook viscoplasticity material model, which suited for materials subjected to large strains, high strain rates and high temperatures. The highest stress, strain and deformation are found to be within the heat affected zone of the weld close to the periphery rubbing surface region and correspond to the highest temperature profiles observed.

【 授权许可】

CC BY   
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