MODELING OF AUSTENITE GRAIN SIZE IN LOW-ALLOY STEEL WELD METAL

作     者：A.G.Huang Y.S.Wang Z.Y.Li J.G.Xiong Q.Hu School of Materials Science & Engineering,Huazhong University of Science and Technology,Wuhan 430074,China 

作者机构：School of Materials Science & Engineering Huazhong University of Science and Technology Wuhan 430074 China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2004年第17卷第2期

页      面：147-154页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

主　　题：low-alloy steel anstenite mathematical model diffusion 

摘      要：The size of austenite grain has significant effects 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.