T91/15-15Ti异材焊接接头微观组织和力学性能研究

Microstructure and Mechanical Property of T91/15-15Ti Dissimilar Steels Welded Joint

T91和15-15Ti是第4代核能钠冷快堆和铅铋快堆候选结构材料,国内外对铁素体/马氏体钢和奥氏体钢焊接性能、焊后热处理、焊接应力等进行了广泛的研究。本文对T91/15-15Ti试板焊态和热处理态焊接接头的焊缝、热影响区和母材微观组织和力学性能变化进行了研究,为T91和15-15Ti异材焊接参数选用和材料应用提供实验数据。

T91 and 15-15Ti are candidate structural materials for sodium and lead bismuth cooled fast reactor of the fourth generation nuclear energy.The welding properties,post weld heat treatment and welding stresses of Ferritic/martensitic steels and austenitic steels have been extensively studied at home and abroad.In this paper,the microstructure and mechanical properties,heat affected zone(HAZ)and base metal of T91/15-15Ti dissimilar steels welded joint were studied for as welded and heat treated plates,which provides experimental data of parameters selection and material application for T91 and 15-15Ti dissimilar steels welding.