TY - JOUR
T1 - Characterization of vacuum explosive welded joints between titanium and stainless steel for vacuum applications
AU - Enav, M.
AU - Botstein, O.
AU - Ashkenazi, D.
AU - Stern, A.
N1 - Publisher Copyright:
© Galati University Press, 2018.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - A two-layered vacuum explosive welded (EXW) plate, consisting of titanium-grade 1/stainless steel 304L (Ti/304L), was investigated for vacuum applications. The interface of the Ti/304L displayed a wavy shape characteristic of the EXW method, which reflects the existence of mass transfer during bonding. The aim of this study was to examine the feasibility of using Ti/304L EXW joints for vacuum application. The Ti/304L EXW plate was examined by non-destructive and destructive metallurgical methods, including visual testing, scanning acoustic testing, light microscopy and metallography, SEM-EDS examination, microindentation hardness measurements, ram tensile test, fractography, and leak testing. According to the metallurgical testing methods, the formation of brittle intermetallic phases took place adjacent to the bonding interface. The intermetallic phases formed at the interface of the Ti/304L, behave as the weakest part in the joint, and determine the brittle type of fracture received under tensile stresses. The measured typical tensile strength of the joint is around 300 MPa, similar to that of the Ti 1 alloy. Based on the leak test results, the examined EXW Ti/304L components were found to be feasible for vacuum applications.
AB - A two-layered vacuum explosive welded (EXW) plate, consisting of titanium-grade 1/stainless steel 304L (Ti/304L), was investigated for vacuum applications. The interface of the Ti/304L displayed a wavy shape characteristic of the EXW method, which reflects the existence of mass transfer during bonding. The aim of this study was to examine the feasibility of using Ti/304L EXW joints for vacuum application. The Ti/304L EXW plate was examined by non-destructive and destructive metallurgical methods, including visual testing, scanning acoustic testing, light microscopy and metallography, SEM-EDS examination, microindentation hardness measurements, ram tensile test, fractography, and leak testing. According to the metallurgical testing methods, the formation of brittle intermetallic phases took place adjacent to the bonding interface. The intermetallic phases formed at the interface of the Ti/304L, behave as the weakest part in the joint, and determine the brittle type of fracture received under tensile stresses. The measured typical tensile strength of the joint is around 300 MPa, similar to that of the Ti 1 alloy. Based on the leak test results, the examined EXW Ti/304L components were found to be feasible for vacuum applications.
KW - Metallurgical bonding
KW - Solid state welding
KW - Stainless steel
KW - Titanium
KW - Vacuum EXW
KW - Vacuum applications
UR - http://www.scopus.com/inward/record.url?scp=85070199647&partnerID=8YFLogxK
U2 - 10.35219/awet.2018.03
DO - 10.35219/awet.2018.03
M3 - Article
AN - SCOPUS:85070199647
SN - 1221-4639
VL - 2018
SP - 19
EP - 26
JO - Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology
JF - Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology
ER -