摘要
LY12CZ 高强铝合金焊接接头应力腐蚀开裂(SCC)性能的试验研究表明:随着极化电位的不同,LY12CZ 焊接接头的阳极溶解和阴极氢脆两种应力腐蚀开裂都可能发生。但是在一般开路状态下为阳极溶解型开裂。最后根据理论分析和试验结果,提出了接头的应力腐蚀沿着无溶质原子析出带产生和扩展的SCC模型。
The SCC experiments on welded joints of high strength aluminium alloyLY12CZ indicate that both Active Path Corrosion and Hydrogen EmbrittlementCracking of the LY12CZ welded jonts can occure with the change of thepolarization potentials.However,it is Active Path Corrosion under no extrapolarizations.The SCC model is established that the SCC of the LY12 CZ weldedjoints initiates and propagates along the precipitation free zone in the overagedzone of the weldes joints according 1o the theoretical analysis and the experi-mental results.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
1990年第2期91-98,共8页
Transactions of The China Welding Institution
关键词
高强度合金
焊接接头
应力腐蚀
High strength alloy
Welded joint
Stress corrosion
