摘要
利用奥氏体不锈钢/低碳锅炉钢(1Cr18Ni9Ti/20G)爆炸焊接复合板．通过电子束焊接得到带有界面裂纹的三点弯曲J积分裂纹扩展阻力试样和四点弯曲疲劳试样,分别进行了带界面裂纹双材料和相应单一材料试样的裂纹扩展阻力曲线及其疲劳扩展行为的实验研究,结果表明:双材料界面裂纹的静态和动态扩展阻力均低于裂纹在相应单一材料中的扩展阻力。
Bimetallic specimens were prapered through explosion clad 1Cr18Ni9Ti/20G and in order to measuring their mechanical properties the electron beam welding of bulk 1Cr18Ni9Ti and bulk 20G on the both respective sides was carried out. Cracks were introduced at the interface in the specimens by milling and spark-erosion. Both the resistance curves loaded by symmetric three-point bending and fatigue crack growth behaviors loaded by symmetric four-point bending were investigated for the bi-materials interface and the bulk materials. The results showed that the resistance to crack growth along the bi-material interface was always less than those of respective counterpart materials for both static and dynamic loadings.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第5期463-466,共4页
Acta Metallurgica Sinica
基金
国家自然科学基金项目59871036
59925104
59731020资助
