Numerical Fracture Analysis of Cryogenically Treated Alloy Steel Weldments

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

Rasool Mohideen, S.^1 ; Thamizhmanii, S.^1 ; Muhammed Abdul Fatah, M.M.^1 ; Saidin, W. Najmuddin W.^1

International College of Automotive (ICAM), DRB-HICOM Pekan Automotive Complex, Peramu Jaya Industrial Area, Pekan, Pahang Darul Makmur

26607, Malaysia^1

关键词: Compact tension specimen;    Engineering components;    Fracture behaviour;    J-integral approach;    Thermo-mechanical coupled;    Treatment process;    Two-dimensional finite element analysis;    Wear resistance of tools;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/114/1/012130/pdf
DOI  :  10.1088/1757-899X/114/1/012130

来源: IOP

【 摘 要 】

Cryogenic treatment is being used commercially in the industries in the last two decades for improving the life of many engineering component such as bearings and cutting tools. Though their influence in improving the wear resistance of tool materials is well established, the effect of treatment on weldments is not much investigated. In the present work, a two dimensional finite element analysis was carried out on the compact tension specimen model for simulating the treatment process and to study the fracture behaviour. The weldments were modelled by thermo- mechanical coupled field analysis for simulating he temperature distribution in the model during weld pool cooling and introducing thermal stresses due to uneven contraction and cooling. The model was subjected to cryogenic treatment by adopting radiation effect. The fracture analysis was carried out using Rice's J- Integral approach. The analysis produced a similar outcome of experimental results i.e. Increase in the fracture toughness of the specimen after cryogenic treatment in the heat affected zone of weldment.