变形温度对HRB400钢显微组织及变形抗力的影响  

Effect of Deformation Temperature on Microstructure and Deformation Resistance of HRB400 Steel

作　　者：刘宇雁[1] 王慧军[1] 汪洋[1] 陈昆宇[1] 陈林[1] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《热加工工艺》2017年第5期74-77,共4页Hot Working Technology

摘　　要：利用Gleeble-1500D热模拟试验机研究了变形温度对HRB400铸坯显微组织和变形抗力的影响。结果表明:变形温度对HRB400钢的组织类型(铁素体和珠光体)没有影响,但影响铁素体晶粒的形状;降低变形温度可以明显细化晶粒的尺寸。随着变形温度的升高,HRB400钢的变形抗力逐渐降低。The influences of deformation temperature on microstructures and deformation resistance of HRB400 casting blank were studied by using Gleeble-1500D thermal simulation testing machine. The results show that： the deformation temperature has no effect on the type of microstructure （ferrite and pearlite） of HRB400 steel, but affects the shape of ferrite grains;decreasing the deformation temperature can obviously refine the grain size. With the deformation temperature increasing, the deformation resistance of HRB400 steel decreases gradually.

关 键 词：变形温度 HRB400钢 微观组织 变形抗力 

分 类 号：TG316[金属学及工艺—金属压力加工]