摘要
本文采用电镜、Ｘ射线衍射分析、裂纹扩展速率ｄａ／ｄＮ及门槛值△Ｋ＿（ｔｈ）试验，研究了大力发电厂１６ＭｎＲ钢高压除氧器焊接接头裂纹的形成原因．结果表明，原发裂纹为延迟裂纹，运行工况下，裂纹以应力腐蚀裂纹（ＳＣＦ）方式扩展。
In this paper,the cause of cracks in the welded joints of higher-pressuredeaertor made of 16MnR steel for thermal power plant was studied with electronmicroscopy,x-ray spectroscopic analysis,da/dN and △K_(th) test.The results show thatthe ckacks were the delay cracking which propagated in a way of stress corrosion`cracking in operation.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
1994年第1期16-22,共7页
Transactions of The China Welding Institution
