TY - JOUR
T1 - Effect of friction time on mechanical and metallurgical properties of continuous drive friction welded Ti6Al4V/SUS321 joints
AU - Li, Peng
AU - Li, Jinglong
AU - Salman, Muhammad
AU - Liang, Li
AU - Xiong, Jiangtao
AU - Zhang, Fusheng
PY - 2014/4
Y1 - 2014/4
N2 - Dissimilar joint of Ti6Al4V titanium alloy and SUS321 stainless steel was fabricated by continuous drive friction welding. The effect of friction time on the mechanical properties was evaluated by hardness measurement and tensile test, while the interfacial microstructure and fracture morphologies were analyzed by scanning electron microscope, energy dispersive spectroscope and X-ray Diffraction. The results show that the tensile strength increases with friction time under the experimental conditions. And the maximum average strength 560MPa, which is 90.3% of the SUS321 base metal, is achieved at a friction time of 4s. For all samples, studied fracture occurred along the joint interface, where intermetallic compounds like FeTi, Fe2Ti, Ni3(Al, Ti) and Fe3Ti3O and many other phases were formed among elements from the two base metals. The width of intermetallic compounds zone increases with friction time up to 3μm, below which it is beneficial to make a strong metallurgical bond. However, the longer friction time leads to oversized flash on the Ti6Al4V side and overgrown intermetallic compounds. Finally the optimized friction time was discussed to be in the range of 2-4s, under which the sound joint with good reproducibility can be expected.
AB - Dissimilar joint of Ti6Al4V titanium alloy and SUS321 stainless steel was fabricated by continuous drive friction welding. The effect of friction time on the mechanical properties was evaluated by hardness measurement and tensile test, while the interfacial microstructure and fracture morphologies were analyzed by scanning electron microscope, energy dispersive spectroscope and X-ray Diffraction. The results show that the tensile strength increases with friction time under the experimental conditions. And the maximum average strength 560MPa, which is 90.3% of the SUS321 base metal, is achieved at a friction time of 4s. For all samples, studied fracture occurred along the joint interface, where intermetallic compounds like FeTi, Fe2Ti, Ni3(Al, Ti) and Fe3Ti3O and many other phases were formed among elements from the two base metals. The width of intermetallic compounds zone increases with friction time up to 3μm, below which it is beneficial to make a strong metallurgical bond. However, the longer friction time leads to oversized flash on the Ti6Al4V side and overgrown intermetallic compounds. Finally the optimized friction time was discussed to be in the range of 2-4s, under which the sound joint with good reproducibility can be expected.
KW - Continuous drive friction welding
KW - Fracture morphology
KW - Interfacial microstructure
KW - Stainless steel
KW - Titanium alloy
UR - http://www.scopus.com/inward/record.url?scp=84890827696&partnerID=8YFLogxK
U2 - 10.1016/j.matdes.2013.11.065
DO - 10.1016/j.matdes.2013.11.065
M3 - 文章
AN - SCOPUS:84890827696
SN - 0264-1275
VL - 56
SP - 649
EP - 656
JO - Materials and Design
JF - Materials and Design
ER -