Abstract
The objective of the present paper is to propose a highly accurate FEM analysis method while taking the phase transformation and the tempering effect into consideration. We developed an algorithm in which the tempering effect is represented by the estimated carbon concentration. As a result, the proposed method by using the above algorithm correctly estimated the volume shrinkage phenomenon due to tempering in FEM analysis. Moreover we evaluated the residual stress in TIG welded block specimen experimentally and analytically. And we confirmed that the proposed method has a higher accuracy than the conventional method.
