Interfacial Features of Stainless Steel/Titanium Alloy Multi-metal Fabricated by Laser Additive Manufacturing

作     者：Jialin Yang Xing Li Hanbo Yao Yingchun Guan Jialin Yang;Xing Li;Hanbo Yao;Yingchun Guan

作者机构：Institute of Machinery Manufacturing TechnologyChina Academy of Engineering PhysicsMianyang 62i900China Hefei Inovation Research Institute of Beihang UniversityAnhui 230012China School of Mechanical Engineering and AutomationBeihang UniversityBejing 100083China National Engineering Laboratory of Additive Manufacturing for Large Metallic.ComponentsBeihang UniversityBejing 100083China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2022年第35卷第8期

页      面：1357-1364页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by the Key Research and Develop Program of Anhui Province(No.202004b11020030) the China Postdoctoral Science Foundation(No.2020M680292) 

主　　题：Laser additive manufacturing Stainless steel/titanium alloy Multi-metal Intermetallic phase Microstructural evolution 

摘      要：Laser additive manufacturing(LAM)is promising for fabricating multi-metallic component,but the mechanism of microstructural evolution at the interface of two metals is still needed to research *** this study,a 316L stainless steel/Ti6Al4V alloy multi-metal was fabricated by LAM,and the mechanism of intermetallic phase transformation was deeply *** show that a strong reaction zone(SRZ)can be induced at the interface of the *** phase constituents at the SRZ vary fromχ(Ti_(5)Fe_(17)Cr_(5))+Fe_(2)Ti+α′-Ti+β-Ti or FeTi to Fe_(2)Ti+χwhen the laser power is *** the scanning speed is further decreased,the thickness of the SRZ is significantly increased,andα′-Ti phase is also formed at this region besides Fe_(2)Ti andχ***,the micro-hardness at the SRZ is increased,caused by the intermetallic phase transformation and elemental interdiffusion at the interface.