TY - JOUR
T1 - Phase transformation mechanisms of NiTi shape memory alloy during electromagnetic pulse welding of Al/NiTi dissimilar joints
AU - Xie, Jilin
AU - Chen, Yuhua
AU - Wang, Hongwei
AU - Zhang, Timing
AU - Zheng, Min
AU - Wang, Shanlin
AU - Yin, Limeng
AU - Shen, Jiajia
AU - Oliveira, J. P.
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (No. 52175326 , 52175288 ), Science and Technology Cooperation Special Project of Jiangxi Province ( 20212BDH81007 ), Young Elite Scientist Sponsorship Program by CAST ( YESS20210452AE ).
Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/2
Y1 - 2024/2
N2 - The phase transformation mechanisms of NiTi shape memory alloy (SMA) during electromagnetic pulse welding (EMPW) of Al/NiTi dissimilar alloy joints were studied. Two types of amorphization behaviors were observed in the NiTi SMA of the Al/NiTi dissimilar joint. These are: i) fast cooling-induced amorphization of the joint interfacial reaction layer; and ii) severe deformation-induced amorphization. Additionally, the martensitic transformation was observed in the NiTi SMA during the high strain rate plastic deformation imposed by the EMPW process. The study shows that the formation of B19' martensite during high strain rate plastic deformation of NiTi SMA is influenced by both the strain rate and the peak pressure of the deformation during welding.
AB - The phase transformation mechanisms of NiTi shape memory alloy (SMA) during electromagnetic pulse welding (EMPW) of Al/NiTi dissimilar alloy joints were studied. Two types of amorphization behaviors were observed in the NiTi SMA of the Al/NiTi dissimilar joint. These are: i) fast cooling-induced amorphization of the joint interfacial reaction layer; and ii) severe deformation-induced amorphization. Additionally, the martensitic transformation was observed in the NiTi SMA during the high strain rate plastic deformation imposed by the EMPW process. The study shows that the formation of B19' martensite during high strain rate plastic deformation of NiTi SMA is influenced by both the strain rate and the peak pressure of the deformation during welding.
KW - Al/NiTi dissimilar alloys joints
KW - Amorphization
KW - Electromagnetic pulse welding
KW - Martensite transformation
KW - NiTi shape memory alloy
UR - http://www.scopus.com/inward/record.url?scp=85183165239&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2024.146119
DO - 10.1016/j.msea.2024.146119
M3 - Article
AN - SCOPUS:85183165239
SN - 0921-5093
VL - 893
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
M1 - 146119
ER -