Grain Growth Simulation of Precipitated Phase on Surface and Evaluation of the Residual Stress Distribution
|Periodical||Advanced Materials Research (Volumes 538 - 541)|
|Main Theme||Materials Processing Technology II|
|Edited by||Liancheng Zhao, Haowei Wang and Changfa Xiao|
|Citation||Takuya Uehara, 2012, Advanced Materials Research, 538-541, 322|
|Online since||June, 2012|
|Keywords||Computer Simulation, Grain Growth, Heat Treatment, Microstructure, Phase Field Model, Precipitation, Residual Stress|
Grain growth simulations considering heat treatment process were carried and the change in microstructure on the surface was regenerated. Stress-dependency of the phase transformation from original phase to precipitate was introduced into the conventional multi-phase-field model, and stress distributions were calculated. Volumetric dilatation was considered as a source of the stress generation, and a slight variation in the dilatation coefficient was applied for each grain. As a result, a mosaic pattern in the stress distribution correlated to the polycrystalline microstructure was obtained. The residual stress distribution was also calculated under three different conditions, and revealed to vary depending on the microstructure obtained.