34CrNiMo6钢的热变形行为及热加工图研究  

Research on the hot deformation behavior and hot working map of 34CrNiMo6 steel

作　　者：张赟凯 杜诗文[1,2] ZHANG Yunkai;DU Shiwen(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi China;Shanxi Provinciai Key Laboratory of Metai Materlai Forming Theory and Technology,Taiyuan University of Science and Technoiogy,Taiyuan 030024,Shanxi China)

机构地区：[1]太原科技大学材料科学与工程学院,山西太原030024 [2]太原科技大学金属材料成形理论与技术山西省重点实验室,山西太原030024

出　　处：《锻压装备与制造技术》2021年第3期97-105,共9页China Metalforming Equipment & Manufacturing Technology

基　　金：山西省应用基础研究面上项目(201901D111242)。

摘　　要：基于Gleeble-3500热模拟压缩实验,对热变形行为及热加工图进行分析。结果表明:34CrNiMo6钢的热变形激活能为365.653kJ/mol;在变形温度1030~1120℃、应变速率0.005~0.03s-1及变形温度1050~1090℃、应变速率0.1~0.5s-1区域内发生的动态再结晶较为充分,是最佳的加工窗口;平均晶粒尺寸随着温度的升高而逐渐变大;随着应变速率的增大而降低,但应变速率对平均晶粒尺的影响不是十分显著。Based on the Gleeble-3500 thermal simulation compression experiment, the thermal deformation behavior and thermal processing map have been analyzed. The results show that the thermal deformation activation energy of 34 Cr Ni Mo6 steel is: dynamic recrystallization occured at a deformation temperature of10301120℃, a strain rate of 0.0050.03 s-1, a deformation temperature of 10501090℃, and a strain rate of0.1-0.5 s-1 is more adequate, which is the best processing window;the average grain size gradually increases as the temperature increases;it decreases with the increase of the strain rate, but the effect of the strain rate on the average grain size is not very significant.

关 键 词：34CrNiMo6钢 本构方程 热加工图 动态再结晶 

分 类 号：TG142[一般工业技术—材料科学与工程]