Effect of TaC Particles Dissolution on Grain Coarsening in Reduced Activation Steels  

作　　者：XIA Zhi-xin ZHANG Chi HUANG Qun-ying LIU Shao-jun LI Zhao-dong YANG Zhi-gang 

机构地区：[1]Key Laboratory of Advanced Materials of Ministry of Education, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China [2]Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, China

出　　处：《Journal of Iron and Steel Research International》2011年第9期47-52,共6页

基　　金：Item Sponsored by National Basic Research Program of China(2010CB731600,2009GB109000);National Natural Science Foundation of China(51071090)

摘　　要：The effect of TaC on grains and packets coarsening in the reduced activation ferritic/martensitic （RAFM） steels was investigated. It was found that the combined effect of the austenitizing temperature and heating rate resulted in the heterogeneous austenite grain growth. When the austenitizing temperature was raised above 1 423 K, the TaC particles disappeared, and the homogenous grains abruptly increased. The thermodynamic model for dissolution of TaC particles during austenitizing was applied to interpret the results.The effect of TaC on grains and packets coarsening in the reduced activation ferritic/martensitic （RAFM） steels was investigated. It was found that the combined effect of the austenitizing temperature and heating rate resulted in the heterogeneous austenite grain growth. When the austenitizing temperature was raised above 1 423 K, the TaC particles disappeared, and the homogenous grains abruptly increased. The thermodynamic model for dissolution of TaC particles during austenitizing was applied to interpret the results.

关 键 词：reduced activation steel TaC precipitation diffusion thermodynamic model 

分 类 号：TG142.72[一般工业技术—材料科学与工程] TQ330.385[金属学及工艺—金属材料]