金属间化合物对钛合金与不锈钢的热轧焊过渡接头耐热性的影响(英文期刊).pdf

Trans. Nonferrous Met. Soc. China 23(2013) 19661970Effect of pounds on heat resistance ofhot roll bonded titanium alloystainless steel transition jointDong-sheng ZHAO1, Jiu-chun YAN2, Yu-jun LIU1 1. State Key Laboratory of Structural Analysis for Industrial Equipment, School of Naval Architecture,Dalian University of Technology, Dalian 116024, China;2. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, ChinaReceived 20 June 2012; accepted 17 September 2012Abstract: The effect of pounds on the heat resistance of transition joint was investigated. The experiment ofpost-weld heat treatment for the hot roll bonded titanium alloystainless steel joint using nickels interlayer was carried out, and theinterface microstructure evolution due to heat treatment was presented. There was not found significant interdiffusion at stainlesssteel/nickel interface, when the specimens were heat treated in the temperature range of 600800 °C for 10 and 30 min, whilemicro-cracks occurred at the stainless steel/nickel interface heat treated at 700 °C for 30 min. The thickness of intermetallic layers atnickel/titanium alloy interface increased at 600 °C, and micro-cracks occurred at 700 and 800 °C. The micro-cracks occurredbetween intermetallic layers or between intermetallic layer and nickel interlayer as well. The tensile strength of the transition joi