IN625激光熔覆层腐蚀致微裂纹扩展机理研究

邓双九, 李昌, 余梦辉, 韩兴

Prpogation Mechanism of Microcracks Caused by Corrosion of Laser Cladded In625 Coating on Nodular Cast Iron in 3.5%NaCl Solution

DENG Shuangjiu, LI Chang, YU Menghui, HAN Xing

表1 QT600球墨铸铁与IN625合金粉末元素组成 (mass fraction / %)

Table 1 Elemental compositions of QT600 nodular cast iron and IN625 alloy powder

Material C Si Mn Mo Cr P S Nb Fe Ni QT600 3.25 2.73 0.35 0.2 0.2 0.05 0.02 - Bal. 0.6 IN625 0.1 0.43 0.38 8.9 20.7 - - 3.39 0.62 Bal.