新型冷轧辊用高合金锻钢的奥氏体晶粒长大规律  

Austenite grain growth behavior of a new high alloy forged steel for cold working rolls

作　　者：刘利刚[1] 张超凡[1] 刘娣[2] 杨昱东[2] 李强[1] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]中钢集团邢台机械轧辊有限公司,河北邢台054025

出　　处：《材料热处理学报》2017年第11期65-70,共6页Transactions of Materials and Heat Treatment

基　　金：河北省自然科学基金(E2016203217)

摘　　要：通过Gleeble-3800型热模拟机研究一种新型冷轧辊用高合金锻钢在不同加热速率(5~50℃/s),加热温度(1050~1150℃)及保温时间(10~800 s)下的奥氏体晶粒长大规律。结果表明:试验钢的平均奥氏体晶粒尺寸随加热速率的升高而减小,同时随加热温度的升高和保温时间的延长而增大。基于金相试验数据利用回归分析建立了描述新型冷轧辊用高合金锻钢不同加热速率下加热与保温过程的奥氏体晶粒长大规律的数学模型。The austenite grain growth behaviors of a new high alloy forged steel for cold working rolls heat treated at different temperatures with different heating rates and held for different time were studied by a Gleeble-3800 thermo-mechanical simulator. The results show that the average austenite grain size of the tested steel decreases with the increasing of the heating rates and increases with the increasing of the heating temperature and holding time. Based on the metallographie test results and the regression analysis, the mathematical models of the austenite grain growth behaviors of the steel during the heating and heat preservation processes with different heating rates are established.

关 键 词：高合金锻钢 奥氏体晶粒长大 加热速率 晶粒长大模型 

分 类 号：TG142.3[一般工业技术—材料科学与工程]