ZG0Cr13Ni5Mo钢及其焊缝金属水下疲劳断裂特性的研究  

Investigation on the Fatigue Fracture Characteristics of ZG0Cr13Ni5Mo and Its Weld Metal under Water

作　　者：杜兵[1] 周宝金[1] 张慧文 李卫东[2] 李云军 白杰 

机构地区：[1]哈尔滨焊接研究所,黑龙江哈尔滨150080 [2]哈尔滨电机厂有限责任公司,黑龙江哈尔滨150040 [3]东方电机股份有限公司,四川德阳618000 [4]洛阳725研究所

出　　处：《大电机技术》2001年第3期56-60,共5页Large Electric Machine and Hydraulic Turbine

摘　　要：采用 CT紧凑拉伸试验，对 ZG0Cr13Ni5Mo钢及其焊缝金属进行了水下疲劳断裂性能的研究。结果表明， ZG0Cr13Ni5Mo钢与 HS135L焊缝金属的断裂扩展速率基本相同， HS367L焊缝金属具有较低的疲劳扩展速率，由此可见， HS367L焊缝金属具有更好的抗水下疲劳断裂性能；载荷频率对水下疲劳裂纹扩展速率没有明显的影响。The fatigue fracture characteristics of ZG0Cr13Ni5Mo and its weld metal were investigated by using CT testing method. The crack propagation rate in ZG0Cr13Ni5Mo is same as in the weld metal welded with HS135L MIG wire. But the crack propagation rate in weld metal welded with HS367L MIG wire is much lower. Load frequency has no distinct influence on crack propagation rate. Fatigue fracture analysis showed that ZG0Cr13Ni5Mo and the weld metal welded with HS135L have same fatigue fracture resistance, and the weld metal welded with HS367L has higher resistance.

关 键 词：焊缝金属 疲劳断裂 扩展速度 ZGOCr13Ni5Mo钢 水轮机 

分 类 号：TK730.5[交通运输工程—轮机工程]