高压容器用钢疲劳裂纹扩展速率研究  

Study on Fatigue Crack Growth Rate of High Pressure Vessel Steel

作　　者：武春学 张永峰 任方杰 

机构地区：[1]洛阳双瑞特种装备有限公司,河南洛阳471000

出　　处：《材料开发与应用》2016年第1期27-29,共3页Development and Application of Materials

摘　　要：研究了高压容器用Cr Ni Mo钢在空气中与3.5%Na Cl溶液介质中的疲劳裂纹扩展,结果表明,3.5%Na Cl溶液介质的存在加速了Cr Ni Mo钢的裂纹扩展,随着裂纹的进一步扩展,其加速作用越来越不明显。The fatigue crack growth rate of Cr Ni Mo steel for high pressure vessel was investigated and obtained in the air and3. 5% Na Cl solution. The result has shown that crack growth accelerates in the 3. 5% Na Cl solution,and the growth rate becomes slower and slower as the crack expands.

关 键 词：3.5%NaCl介质 疲劳裂纹扩展速率 腐蚀疲劳 

分 类 号：TG111.8[金属学及工艺—物理冶金]