【摘要】 在选定的对氢脆敏感的应变速率下,对焊后充氢、焊态和焊后除氢三种状态的试样进行了慢拉伸试验。根据拉伸性能及断裂特性,评定焊接接头的氢脆敏感性。结果表明,已经防止了延迟裂纹的焊接接头,在氢环境中使用时仍有产生氢脆破坏的可能。接头的氢脆敏感性与接头的含氢量、组织及焊接工艺有关。更多还原

【Abstract】 Under selected condition which strain rate is sensitive to hydrogen embrittlement, three kinds of specimen namely in hydrogen permeated and removed state after welding and as-weld state as well were tested at slow stretching manner of tension. The sensitivity to hydrogen embrittlement for a weld joint was evaluated according to its tensile property and fracture characteristic. The results have shown that there still exist the possibility of hydrogen embrittlemet failure for the weld joint which delayed cracking had been avoided then is reused in hydrogen environment again. The sensitivity to hydrogen embrittlement of weld joint is related to hydrogen content, stucture of steel and welding technology.更多还原