TY - JOUR
T1 - Interfacial Features of Stainless Steel/Titanium Alloy Multi-metal Fabricated by Laser Additive Manufacturing
AU - Yang, Jialin
AU - Li, Xing
AU - Yao, Hanbo
AU - Guan, Yingchun
N1 - Publisher Copyright:
© 2022, The Chinese Society for Metals (CSM) and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2022/8
Y1 - 2022/8
N2 - 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 further. In this study, a 316L stainless steel/Ti6Al4V alloy multi-metal was fabricated by LAM, and the mechanism of intermetallic phase transformation was deeply investigated. Results show that a strong reaction zone (SRZ) can be induced at the interface of the multi-metal. The phase constituents at the SRZ vary from χ (Ti5Fe17Cr5) + Fe2Ti + α′-Ti + β-Ti or FeTi to Fe2Ti + χ when the laser power is increased. When the scanning speed is further decreased, the thickness of the SRZ is significantly increased, and α′-Ti phase is also formed at this region besides Fe2Ti and χ phases. Moreover, the micro-hardness at the SRZ is increased, caused by the intermetallic phase transformation and elemental interdiffusion at the interface.
AB - 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 further. In this study, a 316L stainless steel/Ti6Al4V alloy multi-metal was fabricated by LAM, and the mechanism of intermetallic phase transformation was deeply investigated. Results show that a strong reaction zone (SRZ) can be induced at the interface of the multi-metal. The phase constituents at the SRZ vary from χ (Ti5Fe17Cr5) + Fe2Ti + α′-Ti + β-Ti or FeTi to Fe2Ti + χ when the laser power is increased. When the scanning speed is further decreased, the thickness of the SRZ is significantly increased, and α′-Ti phase is also formed at this region besides Fe2Ti and χ phases. Moreover, the micro-hardness at the SRZ is increased, caused by the intermetallic phase transformation and elemental interdiffusion at the interface.
KW - Intermetallic phase
KW - Laser additive manufacturing
KW - Microstructural evolution
KW - Multi-metal
KW - Stainless steel/titanium alloy
UR - https://www.scopus.com/pages/publications/85124822338
U2 - 10.1007/s40195-022-01384-9
DO - 10.1007/s40195-022-01384-9
M3 - 文章
AN - SCOPUS:85124822338
SN - 1006-7191
VL - 35
SP - 1357
EP - 1364
JO - Acta Metallurgica Sinica (English Letters)
JF - Acta Metallurgica Sinica (English Letters)
IS - 8
ER -