摘要
对H13钢表面电火花强化层的热疲劳性能进行了研究。结果表明,电火花强化层在热循环时涂层区域出现裂纹,扩散层区域出现组织粗化和氧化痕迹,但电阻损伤显示,强化层对H13钢基体的热疲劳性能影响不大。电火花强化层的存在,有效提高了基体硬度,并有效保护基体不受氧化和不产生脱碳。
The thermal fatigue properties of strengthening layer on HI3 steel surface by ESD were studied. The research results indicate that, during thermal cycling, cracks occur in the coating area of electrospark strengthening layer, while coarse structure and oxidation trace occur in transition region. The resistance damage indicates that, the strengthening layer has no effect on thermal fatigue properties of base. Electrospark strengthening layer can improve the hardness of base, and protecte the substrate from oxidation and decarburization.
出处
《铸造技术》
CAS
北大核心
2013年第7期836-838,共3页
Foundry Technology
关键词
H13钢
电火花强化
热疲劳
H 13 steel
electric spark deposition
thermal fatigue
