TY - JOUR
T1 - Fabrication and characterization of the Mo/cu bimetal with thick Mo layer and high interfacial strength
AU - Liu, Kaiyuan
AU - Chen, Pengwan
AU - Feng, Jianrui
AU - Ran, Chun
AU - Wang, Yuanjing
AU - Zhou, Qiang
AU - Zhu, Lei
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/1
Y1 - 2021/1
N2 - Due to the brittleness of molybdenum (Mo) and high difference in melting point, it is still a challenge to clad thick Mo onto copper (Cu) with high quality bonding. In this study, a 5 mm thick Mo plate was successfully welded with Cu plate by hot explosive welding, without any cracks being formed. The maximum shear strength of the interface exceeded 295 MPa. The calculated weldability window indicated that the welding was achieved with the parameters close to the lower boundary, and successfully predicted the wavy interfaces. The interfacial microstructures were investigated by scanning electron microscope, electron backscatter diffraction and transmission electron microscopy, the results showed that the dislocations in Cu were higher than the Mo side and the evolutions of interfacial structure due to severe deformation, such as misorientation angle, recrystallization and texture, were quite different for Mo and Cu.
AB - Due to the brittleness of molybdenum (Mo) and high difference in melting point, it is still a challenge to clad thick Mo onto copper (Cu) with high quality bonding. In this study, a 5 mm thick Mo plate was successfully welded with Cu plate by hot explosive welding, without any cracks being formed. The maximum shear strength of the interface exceeded 295 MPa. The calculated weldability window indicated that the welding was achieved with the parameters close to the lower boundary, and successfully predicted the wavy interfaces. The interfacial microstructures were investigated by scanning electron microscope, electron backscatter diffraction and transmission electron microscopy, the results showed that the dislocations in Cu were higher than the Mo side and the evolutions of interfacial structure due to severe deformation, such as misorientation angle, recrystallization and texture, were quite different for Mo and Cu.
KW - Hot explosive welding
KW - Interfacial shear strength
KW - Microstructure
KW - Mo/cu bimetal
UR - http://www.scopus.com/inward/record.url?scp=85091256104&partnerID=8YFLogxK
U2 - 10.1016/j.ijrmhm.2020.105383
DO - 10.1016/j.ijrmhm.2020.105383
M3 - Article
AN - SCOPUS:85091256104
SN - 0263-4368
VL - 94
JO - International Journal of Refractory Metals and Hard Materials
JF - International Journal of Refractory Metals and Hard Materials
M1 - 105383
ER -