CAJ | 학술논문

对20MnMo钢与13MnMoNi54钢异种金属焊接接头的腐蚀行为进行了研究.将焊接接头先分别进行400、500、600℃热处理,然后再将其在硫酸钠和硫酸钾混合溶液中浸泡504h,通过对比腐蚀前后的金相组织、质量、测试腐蚀后的显微硬度,得出试样主要发生了局部腐蚀,焊接接头在400℃到500℃之间时,其焊缝耐腐蚀性能要优于母材、热影响区和熔合区.
대20MnMo강여13MnMoNi54강이충금속한접접두적부식행위진행료연구.장한접접두선분별진행400、500、600℃열처리,연후재장기재류산납화류산갑혼합용액중침포504h,통과대비부식전후적금상조직、질량、측시부식후적현미경도,득출시양주요발생료국부부식,한접접두재400℃도500℃지간시,기한봉내부식성능요우우모재、열영향구화용합구.
The corrosion behavior of 20MnMo/13MnMoNi54 welded joint was studied. The tested specimens were cut from the welded joint subjected to heat treatment at the temperature of 400℃ , 500 ℃ and 600 ℃ respectively, and then were put in the sodium sulfate and in the potassiumsulfate mix solution for 504 h. The microstructure, weight, and hardness of the tested specimens was measured and compared. The results show that local corrosion occurs mainly in the specimens, the corrosion resistance of the 20MnMo/13MnMoNi54 welded joint is better than that of the base metal, the heat-affected zone and the fusion zone metals between 400℃ and 500 ℃.