核电汽轮机用钢蓝脆和应力腐蚀的交互作用  

INTERACTION BETWEEN BLUE BRITTLENESS AND STRESS CORR0SION CRACKING

作　　者：褚武扬[1] 吕荣邦[1] 蒋柏林[1] 王燕斌[1] 高克玮[1] 赵旭红[2] 黄有光 李铭华 

机构地区：[1]北京科技大学,北京100083 [2]哈尔滨汽轮机厂,哈尔滨150040

出　　处：《金属学报》1997年第8期844-850,共7页Acta Metallurgica Sinica

摘　　要：本文研究了核电汽轮机用钢蓝脆和应力腐蚀的交互作用，结果表明：这类中强度钢在水介质中的应力腐蚀敏感性很小，只能用慢拉伸方法才能发现．但是，在蓝脆温度（230℃）附近，动态应变时效将和应力腐蚀发生交互作用，从而使应力腐蚀敏感性急剧升高．其原因和应变高度局部化导致的氢富集有关.30Cr2Ni4MoV and 30Cr2MoV steels presented blue brittleness near 230℃ and 180℃, respectively. The susceptibility of stress corrosion cracking (SCC) for this kind of steels in aqueous solution at various temperatures is very low except near blue brittleness temperature. Near blue brittless temperature, there is a strong interaction between the dynam-ic strain aging, which results in blue brittleness, and SCC, resulting in a steep enhancement of the susceptibility of SCC.

关 键 词：核电用钢 蓝脆 应力腐蚀 核电站 汽轮机 

分 类 号：TG172.9[金属学及工艺—金属表面处理] TL341[金属学及工艺—金属学]