摘要
利用强流脉冲电子束对45#钢进行了表面改性处理,并对其显微组织和改性机制进行了分析和讨论。结果表明:材料近表层的显微组织沿电子束注入方向大致可分为4层:熔化层(3~10μm)、热影响层(10~50μm)、应力影响层(50~250μm)、基体组织(大于250μm);显微硬度随轰击次数的增加而增加,最大值出现在50μm左右;多次轰击可以提高耐磨性。
The surface modification of 45~# steel bombarded by high-current pulsed electron beam was studied and microstructure and surface modification were analysed and discussed. Experimental results show that microstructure of near-surface layers can be divided into four zones along the direction of electric beam: the white layer or melted layer (3~10μm), the heat effecting zone (10~50μm), stress effecting zone (50~250μm) and matrix (after 250μm).The microhardness increases with increasing of bombardment times,abrasion resistance property is enhanced by increasing of the bombardment times.
出处
《吉林大学学报(工学版)》
EI
CAS
CSCD
北大核心
2004年第1期127-131,共5页
Journal of Jilin University:Engineering and Technology Edition
关键词
强流脉冲电子束
表面改性
显微组织
45^#钢
high current pulsed electron beam
surface modification
microstructure
45~# steel