A.G. Huang
,
Y.S. Wang
,
Z.Y. Li
,
J.G. Xiong
,
Q. Hu
金属学报(英文版)
The size of austenite grain has significant e®ects on components and proportions of
various ferrites in low-alloy steel weld metal. Therefore, it is important to determine
the size of austenite grain in the weld metal. In this paper, a model based upon the
carbon diffusion rate is developed for computing austenite grain size in low-alloy steel
weld metal during continuous cooling. The model takes into account the effects of the
weld thermal cycles, inclusion particles and various alloy elements on the austenite
grain growth. The calculating results agree reasonably with those reported experimental
observations. The model demonstrates a significant promise to understand the weld
microstructure and properties based on the welding science.
关键词:
low-alloy steel
,
null
,
null
,
null
