摘要
应力腐蚀开裂（SCC）是核电一回路安全端在服役过程中的一种重要失效形式。针对SCC裂尖基体金属在高温高压条件下发生的蠕变现象,利用ABAQUS模拟了在高温水环境下膜致应力对316L不锈钢应力腐蚀裂纹尖端蠕变特性的影响。结果表明：蠕变后,基体金属裂尖的应力、塑性变形、蠕变率和裂纹扩展率都会随之增大,进而使裂尖氧化膜破裂的倾向更加明显。
Stress corrosion cracking （SCC） is an important failure mode during the service of nuclear safety operation. Aiming at the appearance of the creep phenomenon of SCC metal at crack tip at high temperature and high pressure, ABAQUS was used to simulate the influence of film induced stress on the creep characteristics of SCC crack tip of 316L stainless steel at high temperature water environment. The results show that all of the following parameters including crack tip stress, plastic deformation, creep rate and crack growth rate increase after creep, which can lead to the rupture tendency of the oxide film at the crack tip be more obvious.
作者
李凯
薛河
崔英浩
王帅
宋瑞寒
LI Kai;XUE He;CUI Yinghao;WANG Shuai;SONG Ruihan(School of Mechanical Engineering, Xi＇an University of Science and Technology, Xi＇an 710054, China)
出处
《热加工工艺》
CSCD
北大核心
2018年第6期57-60,共4页
Hot Working Technology
基金
国家自然科学基金项目(51475362,11502195)
关键词
应力腐蚀开裂
316L
膜致应力
蠕变
stress corrosion crack （SCC）
316L
film induced stress
creep
