Isothermal Grain Growth of Austenite in Hypoeutectoid and Hypereutectoid Plain Carbon Steels

作     者：Joydeep Maity Dipak Kumar Mondal 

作者机构：Department of Metallurgical and Materials EngineeringNational Institute of Technology Durgapur 

出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)

年 卷 期：2010年第17卷第7期

页      面：38-43页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：NIT Durgapur  India 

主　　题：plain carbon steel grain growth time exponent solute drag 

摘      要：Grain growth kinetics of austenite in a hypoeutectoid steel（containing carbon of 0.35%）at 920 ℃ and in a hypereutectoid steel（containing carbon of 1%）at 980 ℃ for holding time ranging from 1 h to 6 h was *** hypoeutectoid steel exhibited normal grain growth without solute drag hindrance with a time exponent（0.51）close to the theoretical value（0.5）.However,the grain growth of austenite in the hypereutectoid steel held up to 3 h was extremely slow,characterizing by a low value of time exponent（0.08）.Thereafter,a breakaway occurred and the grain growth in the hypereutectoid steel held from 3 h to 6 h progressed normally with a time exponent（0.52）close to the theoretical value（0.5）.