广东电力2016，Vol.29Issue(7)：1-4,28,5.DOI:10.3969/j.issn.1007-290X.2016.07.001
12Cr 18Ni 12Ti/12Cr 1MoV异种耐热钢焊接接头蠕变数值模拟
Numerical Simulation on Interfacial Creep of Dissimilar Welded Joint Between 12Cr18Ni12Ti and 12Cr1MoV Heat-resistant Steel
摘要
Abstract
Finite element is used for numerical simulation on the maximum principal stress,von Mises equivalent stress and e-quivalent creep stress in dissimilar welded joint between austenitic heat-resistant steel (12Cr18Ni12Ti )and pearlitic heat-re-sistant steel (12Cr1MoV)under conditions of 540℃ and applied stress being 80 MPa. The results indicate that the maximum principal stress is quite high in the vicinity of weld 12Cr1MoV interface and creep cavities are easy to form in the weld 12Cr1MoV interface zone. The von Mises equivalent stress in the vicinity of weld 12Cr1MoV interface is also high and creep cavities are easy to expand as well. Creep deformation occurs at one side of 12Cr1MoV steel,the maximum equivalent creep strain is 5.3 mm from the weld 12Cr1MoV interface and there is creep constrain in the weld 12Cr1MoV interface. Thus it can be seen that weld 12Cr1MoV interface is the weakest part of 12Cr18Ni12Ti/12Cr1MoV welded joint.关键词
奥氏体耐热钢/珠光体耐热钢/异种钢焊接接头/蠕变/数值模拟Key words
austenitic heat-resistant steel/pearlitic heat-resistant steel/dissimilar metal welding joint/creep/numerical sim-ulation分类
矿业与冶金引用本文复制引用
张建强,郭嘉琳,李太江,姚兵印,刘福广..12Cr 18Ni 12Ti/12Cr 1MoV异种耐热钢焊接接头蠕变数值模拟[J].广东电力,2016,29(7):1-4,28,5.基金项目
国家自然科学基金资助项目(51374154) （51374154）
