钻杆接头用含铌钒37CrMnMo钢的热变形行为及热加工图  

Hot Deformation Behavior and Hot Processing Map of 37CrMnMo Steel Containing Niobium and Vanadium for Drill Pipe Joints

作　　者：孙小林 江希红 王青峰[2] 文辉 谭亚泽 王得炯 SUN Xiaolin;JIANG Xihong;WANG Qingfeng;WEN Hui;TAN Yaze;WANG Dejiong(Hailong Petroleum Drilling Tools(Wuxi)Co.,Ltd.,Wuxi Jiangsu 214112,China;School of Materials Science and Engineering,Yanshan University,Qinhuangdao Hebei 066004,China;Nanjing Iron and Steel Co.,Ltd.,Nanjing Jiangsu 210035,China)

机构地区：[1]海隆石油钻具(无锡)有限公司,江苏无锡214112 [2]燕山大学材料科学与工程学院,河北秦皇岛066004 [3]南京钢铁股份有限公司,江苏南京210035

出　　处：《上海金属》2024年第6期11-15,22,共6页Shanghai Metals

摘　　要：采用Gleeble-3500热模拟试验机对含铌钒37CrMnMo钢进行等温单道次热压缩试验,研究了在不同变形温度和应变速率下钢的热变形行为及组织演变规律,并根据真应力-真应变曲线建立了该钢的热变形方程和热加工图。结果表明:在相同变形条件下,流变应力随变形温度的升高或应变速率的降低而降低;在高温、低应变速率条件下,试验钢的动态再结晶行为较显著;试验钢的热变形激活能为339.448 kJ/mol,基于动态材料模型和Prasad失稳准则确定了应变量为0.7时该钢的最佳热加工参数为1055~1250℃、0.05~0.12 s^(-1)和1130~1250℃、0.12~2.79 s^(-1)。Isothermal single-pass hot compression test of 37CrMnMo steel containing niobium and vanadium was carried out on a Gleeble-3500 thermal simulation testing machine,the hot deformation behavior and microstructure evolution law of the steel under different deformation temperatures and strain rates were studied,and the hot deformation equation and hot processing map of the steel were established according to the true stress-true strain curves.The results showed that(a)under the same deformation conditions,the flow stress decreased with the increase in deformation temperature or the decrease in strain rate;(b)under the condition of high temperature and low strain rate,the dynamic recrystallization behavior of the tested steel was more significant;(c)the activation energy for hot deformation of the tested steel was 339.448 kJ/mol,and the optimal hot processing parameters for the steel with strain of 0.7 were determined on the basis of the dynamic material model and Prasad instability criterion,being 1055 to 1250°C,0.05 to 0.12 s^(-1)and 1130 to 1250°C,0.12 to 2.79 s^(-1).

关 键 词：钻杆接头 37CrMnMo钢 热变形行为 本构模型 热加工图 

分 类 号：TG142.33[一般工业技术—材料科学与工程]