TY - JOUR
T1 - Microstructure and bonding properties of diffusion-bonded composite comprising an Fe-Al alloy and carbon steel
AU - Masahashi, N.
AU - Komatsu, K.
AU - Watanabe, S.
AU - Hanada, S.
N1 - Funding Information:
The authors gratefully acknowledge Mr. Hayasaka and Mr. Aoyagi for the TEM observation, Mr. Murakami for EPMA analysis and Mr. Endo, Mr. Usui, Mr. Ono and Mr. Sato for constructing the mechanical testing jigs. The assistance of Dr. Takada, Dr. Ashino, Mr. Konno and Mr. Sakamoto in chemical analysis is also gratefully acknowledged. N.M. would like to thank Toray Science Foundation for providing financially support to this study.
PY - 2006/3
Y1 - 2006/3
N2 - This study discusses microstructure evolution, diffusion behavior and bonding strength of a couple comprising of an iron aluminium alloy (Fe-Al) and high carbon-steel (FeCMn) during diffusion bonding. A columnar microstructure evolves from the joint interface toward FeCMn and disappears in couples bonded for a long period. Aluminium diffusion from Fe-Al to FeCMn and columnar microstructure evolution are retarded as compared to a couple consisting of an Fe-Al and ferrite steel. The carbide in the FeCMn impedes the aluminium diffusion and retards the columnar grain evolution. When the carbide is dissolved in the ferrite during the aluminium diffsuion from Fe-Al, coarse grains evolve due to the coalescence of the columnar grains and a high-bonding strength is obtained. The hardness variation is minimum in the FeCMn of a couple bonded for a short period, which is explained by the microstructural changes in the columnar grain evolution and carbide dissociation.
AB - This study discusses microstructure evolution, diffusion behavior and bonding strength of a couple comprising of an iron aluminium alloy (Fe-Al) and high carbon-steel (FeCMn) during diffusion bonding. A columnar microstructure evolves from the joint interface toward FeCMn and disappears in couples bonded for a long period. Aluminium diffusion from Fe-Al to FeCMn and columnar microstructure evolution are retarded as compared to a couple consisting of an Fe-Al and ferrite steel. The carbide in the FeCMn impedes the aluminium diffusion and retards the columnar grain evolution. When the carbide is dissolved in the ferrite during the aluminium diffsuion from Fe-Al, coarse grains evolve due to the coalescence of the columnar grains and a high-bonding strength is obtained. The hardness variation is minimum in the FeCMn of a couple bonded for a short period, which is explained by the microstructural changes in the columnar grain evolution and carbide dissociation.
UR - http://www.scopus.com/inward/record.url?scp=33645134934&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33645134934&partnerID=8YFLogxK
U2 - 10.1007/s10853-006-2934-y
DO - 10.1007/s10853-006-2934-y
M3 - Article
AN - SCOPUS:33645134934
SN - 0022-2461
VL - 41
SP - 1691
EP - 1696
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 6
ER -