TY - JOUR
T1 - Effect of Heat Treatment on Microstructure and Properties of Fe(Al,Ta)/Fe2Ta(Al) Eutectic Composite
AU - Li, Haolin
AU - Cui, Chunjuan
AU - Wang, Yan
AU - Wang, Zhicong
AU - Zhao, Zhiqi
AU - Wu, Tongchao
AU - Su, Haijun
N1 - Publisher Copyright:
© Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature 2025.
PY - 2025/4
Y1 - 2025/4
N2 - Fe(Al,Ta)/Fe2Ta(Al) eutectic composites with solidification rates of 6, 20, 30, and 80 µm/s were prepared by a modified Bridgman directional solidification technology. The coarse Fe2Ta(Al) Laves phase was precipitated at the eutectic colony boundary during the solidification process, which can affect the stability of microstructure and properties of the composites. The coarse Laves phase was refined using different heat treatment processes in the present paper. The influences of different heat treatment parameters on the Laves phase content, lamella/rod spacing, and mechanical properties were investigated in detail. In addition, the corrosion behaviors of Fe(Al,Ta)/Fe2Ta(Al) eutectic composites before and after being annealed heat treatment in a 3 g/L Na2S2O3 solution were also studied. It is shown that both the content of Laves phase and lamella/rod spacing are gradually decreased after heat treatment. Micro-hardness is decreased, while the yield strength, compressive strength, and corrosion resistance are improved. The optimum heat treatment process is selected as well.
AB - Fe(Al,Ta)/Fe2Ta(Al) eutectic composites with solidification rates of 6, 20, 30, and 80 µm/s were prepared by a modified Bridgman directional solidification technology. The coarse Fe2Ta(Al) Laves phase was precipitated at the eutectic colony boundary during the solidification process, which can affect the stability of microstructure and properties of the composites. The coarse Laves phase was refined using different heat treatment processes in the present paper. The influences of different heat treatment parameters on the Laves phase content, lamella/rod spacing, and mechanical properties were investigated in detail. In addition, the corrosion behaviors of Fe(Al,Ta)/Fe2Ta(Al) eutectic composites before and after being annealed heat treatment in a 3 g/L Na2S2O3 solution were also studied. It is shown that both the content of Laves phase and lamella/rod spacing are gradually decreased after heat treatment. Micro-hardness is decreased, while the yield strength, compressive strength, and corrosion resistance are improved. The optimum heat treatment process is selected as well.
KW - directional solidification
KW - eutectic composite
KW - heat treatment
KW - microstructure
KW - properties
UR - http://www.scopus.com/inward/record.url?scp=105005087879&partnerID=8YFLogxK
U2 - 10.1007/s11595-025-3074-z
DO - 10.1007/s11595-025-3074-z
M3 - 文章
AN - SCOPUS:105005087879
SN - 1000-2413
VL - 40
SP - 374
EP - 381
JO - Journal Wuhan University of Technology, Materials Science Edition
JF - Journal Wuhan University of Technology, Materials Science Edition
IS - 2
ER -