热处理对16MnR钢断裂韧度的影响  

Effect of thermal treatment on Fracture Toughness of 16MnR Steel

作　　者：李红英[1] 张希旺[1] 丁常伟[1] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《材料科学与工程学报》2008年第4期599-601,578,共4页Journal of Materials Science and Engineering

摘　　要：本文对16MnR钢断裂韧度J积分值进行了研究分析。测定了16MnR钢三种不同状态的JR曲线:热轧态,lnJ=6.03+0.61lnΔa;正火空冷,lnJ=6.65+0.97lnΔa;正火风冷,lnJ=6.4+0.71lnΔa。对断口和显微组织进行了观察分析,结果表明热处理后的材料具有较高的断裂韧度。In this paper, the fracture toughness of 16MnR steel was measured by J integral. Three resistant curves of different states of 16MnR steel were obtained： at hot rolled state, lnJ =6. 03 ＋ 0. 61lnΔa; at air cooling after 970℃ normalizing treatment, lnJ= 6.65 ＋ 0. 97lnΔa; at wind cooling after 970℃ normalizing treatment, lnJ = 6.4 ＋ 0. 71lnΔa. Moreover. Correspoding microstructure observation and fracture surface morphology analysis suggest that heat treatment can increase the toughness properties of 16MnR steel.

关 键 词：16MNR钢 热处理 断裂韧度 J1C 

分 类 号：TG115.5[金属学及工艺—物理冶金]