摘要
经对断裂的常减压水冷器小浮头螺栓的宏观和微观的观察和分析,结果表明:螺栓材料为35CrMoA低合金钢,经过淬火和低温回火处理,强度达1 000 MPa,HRC达36,对氢致开裂(HIC)敏感,螺栓属HIC脆性断裂。
The bolt in oil water cooler of refinery vacuum tower fractured after operation for twenty days,by means of macro and microanalysis the results showed that the fracture was caused by hydrogen induce cracking(HIC).The cracking mechanism was discussed and proposal was mentioned for protection of similar failure.
出处
《腐蚀与防护》
CAS
北大核心
2008年第3期160-162,共3页
Corrosion & Protection
关键词
螺栓
高强度钢
酸性环境
氢致开裂
bolt
high strength steel
acid medium
hydrogen induce cracking
