Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1583841 | Materials Science and Engineering: A | 2007 | 7 Pages |
Abstract
A model to predict the austenite grain size in a Ti-microalloyed steel weld heat affected zone (HAZ) was developed. Grain boundary mobility for the austenite grain growth was expressed as a function of aging temperature and alloying elements. By analyzing isothermal austenite grain growth behavior, the Zener coefficient of cubic TiN particle was measured. From quantification of the effect of grain boundary pinning by TiN particle and alloying elements on the grain boundary mobility, an isothermal grain growth model of Ti-microalloyed steel is presented. The predicted austenite grain sizes from the proposed model were in agreement with the experimental results. Finally, combining with the additivity rule, a general austenite grain growth model during the continuous welding thermal cycle was developed.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Joonoh Moon, Jongbong Lee, Changhee Lee,