北京科技大学学报Issue(3)：301-307,7.DOI:10.13374/j.issn1001-053x.2014.03.004
机车车轮用钢奥氏体晶粒的长大行为
Austenite grain growth behavior of locomotive wheel steel
摘要
Abstract
Metallographic microscopy and intercept method were adopted to investigate the austenitic grain growth behavior of loco-motive wheel steel at different heating temperatures and holding time. On the basis of analyzing the effects of heating temperature and holding time on the austenite grain size, a simple kinetic model was used to analyze the austenite grain growth process, and the influ-ence of the evolution of second phase particles on the austenite grain growth was also discussed. It is found that the austenite grain size increases with the rise of heating temperature and the prolonging of holding time, but the influence of heating temperature is more obvi-ous. The kinetic time exponent of austenitic grain growth increases with temperature rise and the value is close to the theoretical value of 1/2. Austenite grain growth and the volume fraction and size variation of second phase particles AlN in the steel have a significant correlation.关键词
合金钢/加热/奥氏体/晶粒长大/动力学/氮化铝Key words
alloy steel/heating/austenite/grain growth/kinetics/aluminum nitride分类
矿业与冶金引用本文复制引用
孙乐飞,王福明,陶素芬,勾雪..机车车轮用钢奥氏体晶粒的长大行为[J].北京科技大学学报,2014,(3):301-307,7.基金项目
国家自然科学基金资助项目(51374018,51174020) （51374018,51174020）
中央高校基本科研业务费专项资金资助项目(FRF-SD-12-010A) （FRF-SD-12-010A）
