304不锈钢水管泄漏原因分析  

Reason Analysis of Leakage in 304 Stainless Steel Water Pipe

作　　者：涂建国 王鑫 张玲 孙耀明 

机构地区：[1]深圳市材料表面分析检测中心,广东深圳518117

出　　处：《热处理技术与装备》2017年第1期52-55,共4页Heat Treatment Technology and Equipment

基　　金：深圳市科技计划项目资助(FWCX2015080316030463)

摘　　要：采用SEM、化学成分及金相检验等方法对304不锈钢水管泄漏的原因进行了分析。结果表明,水管焊接区域有过热现象,导致材料的局部力学性能降低;同时水管材质的洁净度较差,在有拉应力、腐蚀介质、温度的影响下,水管优先在夹杂物聚集的区域产生应力腐蚀裂纹,并向基体内延伸扩展,最终导致水管泄漏。The reason of leakage of 304 stainless steel water pipe was analyzed by SEM observation,chemical composition and metallographic examination. The results show that there is overheating in the welding area of water pipe which leads to the sectional mechanics performance of material,and cleanliness of water pipe is poorer.,The water pipe is preferred to produce stress corrosion crack in the aggregated region of the inclusion under the tensile stress,corrosive medium and temperature,and the crack extends into the matrix and leds to the water pipe leaks finally.

关 键 词：304不锈钢水管 过热 应力腐蚀 

分 类 号：TG142.71[一般工业技术—材料科学与工程]