用显微径迹照相技术研究硼在20MnVB钢中的行为  

Study on the Behavior of B in 20MnVB Steel by the Fission Track Etching Method

作　　者：杜斌[1] 李文卿[2] 许洪新[3] 杨飞[3] 刘东风[3] 

机构地区：[1]机电部北京机电研究所 [2]北京科技大学 [3]太原钢铁公司

出　　处：《金属热处理》1990年第4期17-22,共6页Heat Treatment of Metals

摘　　要：采用硼的显微径迹照相技术对20MnVB钢中存在的含硼相Fe_(23)(C,B)_(?)的溶解与析出行为进行了研究,并探讨了这种溶解与析出行为对20MnVB钢淬透性曲线的影响。实验结果表明,Fe_(23)(C,B)_o的溶解与析出有一个温度范围,而且从高温奥氏体状态冷却时,硼在晶界上的偏聚和析出,还明显受到冷却速度的影响。This paper deals with the dissolution and precipitation behaviorof Fe_(23)(C,B)_6 of 20MnVB steel by means of fission track etching method,and the effects of this behavior on the hardenability of 20MnVB steels.Itwas denoted that there exists a temperature range of dissolution and precipi-tation of Fe_(23)(C,B)_6.And the segregation or precipitation of B on the auste-nite grain boundary was remarkable influenced by cooling rate when the steelwas cooling from high austenitizing temperature.

关 键 词：硼 径迹 照相 20MNVB钢 

分 类 号：TG115.221[金属学及工艺—物理冶金]