摘要
本文就15MnVNq钢56mm厚板接头动态与静态应变时效,焊接热应变脆化倾向及应变时效对焊缝横向和纵向COD及夏比冲击的影响进行试验分析,得出15MnvNq钢56mm厚板对接接头的焊缝金属具有明显的动态应变时效倾向。时效敏感温度在200～300℃范围内;焊缝的最脆区是先焊面的最后焊道。试验结果还表明,对低温工作的焊接结构采用应变时效试件在低温下作韧性的定量评定是必要的。
In this paper, the dynamic and static strain aging, the tendency of welding hot straining embrittlement of butt joint of double V groove with root face and the influence of strain aging on COD and Charpy impact of transverse and longitudinal weld of 15MnVNq steel butt joint with 56mm thick plates are investigated. Results show 15MnVNq steel butt weld has an obvious tendency towards dynamic strain aging. The sensitive temperature range is about 200～300℃ . The most embrittled region of the butt weld is the last bead of the first finished side in welding by both sides. The test results show that it is necessary to use strain aged samples for judging quantitatively the low temperature toughness for welded structure under low temperature working condition.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
1989年第2期104-110,共7页
Transactions of The China Welding Institution
