摘要
利用金相试验方法,对H13钢锻材在不同加热温度(1030~1150℃)及保温时间(30~120 min)下的奥氏体晶粒长大规律进行研究。结果表明:温度升高和保温时间延长均可促使H13钢奥氏体晶粒的不断长大,温度升高对晶粒长大的促进作用更显著。H13钢的奥氏体晶粒粗化温度在1100~1120℃之间,优选固溶温度为1100℃。在Sellars模型的基础上,对试验数据进行回归分析,建立了H13钢锻材加热时奥氏体晶粒长大模型:D^5.369=D0^5.369+5.6154×1097exp[-2431 085.76/RT]t,该模型计算值与测量值吻合度较高。
Austenite grain growth behavior of as-forged H13 steel in the process of heating at different temperatures(1030-1150℃)for different holding time(30-120 min)was investigated based on metallographic experimental method.The results show that the increasing of temperature and the extension of heat preservation time can promote the continuous growth of austenite grains of H13 steel,and the increasing of temperature can promote the growth of grains more significantly.Austenite grain coarsening temperature of H13 steel falls within the range of 1100-1120℃,and the optimized solution temperature is 1100℃.On the basis of Sellars model,the austenite grain growth model of H13 steel forging material is established by regression analysis of the experimental data:D5.369=D05.369+5.6154×1097exp[-2431 085.76/RT]t,the calculated value of this model is in good agreement with the measured value.
作者
张雲飞
樊明强
白丽娟
赵英利
史远
嵇爽
Zhang Yunfei;Fan Mingqiang;Bai Lijuan;Zhao Yingli;Shi Yuan;Ji Shuang(Technology Research Institute,HBIS Group,Shijiazhuang Hebei 052165 ,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2019年第6期33-37,共5页
Heat Treatment of Metals
