TY - GEN
T1 - Effect of heat treatment on formation of columnar ferrite structure in explosively welded titanium/hypoeutectoid steel joints
AU - Morizono, Yasuhiro
AU - Nishida, Minoru
AU - Chiba, Akira
AU - Yamamuro, Takateru
PY - 2004
Y1 - 2004
N2 - Explosive welding of titanium to hypoeutectoid steel (0.09 mass%C) was carried out, and interfacial aspects of as-welded and heat treated states have been investigated with a focus on microstructures of the steel. In as-welded joint, plastic flow occurred by high velocity collision was observed in the vicinity of the interface. The steel in the joints retained equiaxed structure consisting of ferrite and pearlite even after prolonged heat treatment up to 1173 K. Columnar grains were generated in the steel near the interface by the heat treatment at 1223 K and above. Although the region of the columnar ferrite structure increased with increasing heating temperature and holding time, texture with specific crystal orientation was not confirmed. It was found that such a microstructural change in the steel was closely related to constituent phases formed at the bonding interface. The formation mechanism of the columnar structure was also discussed.
AB - Explosive welding of titanium to hypoeutectoid steel (0.09 mass%C) was carried out, and interfacial aspects of as-welded and heat treated states have been investigated with a focus on microstructures of the steel. In as-welded joint, plastic flow occurred by high velocity collision was observed in the vicinity of the interface. The steel in the joints retained equiaxed structure consisting of ferrite and pearlite even after prolonged heat treatment up to 1173 K. Columnar grains were generated in the steel near the interface by the heat treatment at 1223 K and above. Although the region of the columnar ferrite structure increased with increasing heating temperature and holding time, texture with specific crystal orientation was not confirmed. It was found that such a microstructural change in the steel was closely related to constituent phases formed at the bonding interface. The formation mechanism of the columnar structure was also discussed.
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U2 - 10.4028/www.scientific.net/msf.465-466.373
DO - 10.4028/www.scientific.net/msf.465-466.373
M3 - Conference contribution
AN - SCOPUS:8644248332
SN - 9780878499502
T3 - Materials Science Forum
SP - 373
EP - 378
BT - Explosion, Shock Wave and Hypervelocity Phenomena in Materials
A2 - Itoh, Shigeru
A2 - Hokamoto, K.
A2 - Fujita, Masahiro
PB - Trans Tech Publications Ltd
T2 - Proceedings of the 1st International Symposium on Explosion, Shock Wave and Hypervelocity Phenomena (ESHP Symposium)
Y2 - 15 March 2004 through 17 March 2004
ER -