TY - JOUR
T1 - Superthermostability of nanoscale TIC-reinforced copper alloys manufactured by a two-step ball-milling process
AU - Wang, Fenglin
AU - Li, Yunping
AU - Xu, Xiandong
AU - Koizumi, Yuichiro
AU - Yamanaka, Kenta
AU - Bian, Huakang
AU - Chiba, Akihiko
N1 - Publisher Copyright:
© 2015 Taylor & Francis.
PY - 2015/12/12
Y1 - 2015/12/12
N2 - A Cu-TiC alloy, with nanoscale TiC particles highly dispersed in the submicron-grained Cu matrix, was manufactured by a self-developed two-step ball-milling process on Cu, Ti and C powders. The thermostability of the composite was evaluated by high-temperature isothermal annealing treatments, with temperatures ranging from 727 to 1273 K. The semicoherent nanoscale TiC particles with Cu matrix, mainly located along the grain boundaries, were found to exhibit the promising trait of blocking grain boundary migrations, which leads to a super-stabilized microstructures up to approximately the melting point of copper (1223 K). Furthermore, the Cu-TiC alloys after annealing at 1323 K showed a slight decrease in Vickers hardness as well as the duplex microstructure due to selective grain growth, which were discussed in terms of hardness contributions from various mechanisms.
AB - A Cu-TiC alloy, with nanoscale TiC particles highly dispersed in the submicron-grained Cu matrix, was manufactured by a self-developed two-step ball-milling process on Cu, Ti and C powders. The thermostability of the composite was evaluated by high-temperature isothermal annealing treatments, with temperatures ranging from 727 to 1273 K. The semicoherent nanoscale TiC particles with Cu matrix, mainly located along the grain boundaries, were found to exhibit the promising trait of blocking grain boundary migrations, which leads to a super-stabilized microstructures up to approximately the melting point of copper (1223 K). Furthermore, the Cu-TiC alloys after annealing at 1323 K showed a slight decrease in Vickers hardness as well as the duplex microstructure due to selective grain growth, which were discussed in terms of hardness contributions from various mechanisms.
KW - Ultrafine-grained (UFG) microstructure
KW - ball-milling process
KW - particle pinning
KW - thermal stability
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U2 - 10.1080/14786435.2015.1112442
DO - 10.1080/14786435.2015.1112442
M3 - Article
AN - SCOPUS:84947930349
VL - 95
SP - 4035
EP - 4053
JO - Philosophical Magazine
JF - Philosophical Magazine
SN - 1478-6435
IS - 35
ER -