TY - GEN
T1 - Development of low-cost high-strength beta-type titanium alloys using a metal injection molding
AU - Cho, Ken
AU - Niinomi, Mitsuo
AU - Nakai, Masaaki
AU - Santos, Pedro F.
AU - Itoh, Yoshinori
AU - Ikeda, Masahiko
N1 - Publisher Copyright:
Copyright © 2014 MS&T14®.
PY - 2014
Y1 - 2014
N2 - Ti-13Mn was fabricated using a metal injection molding method to develop a new low-cost high-strength β-type titanium alloy. The Vickers hardness, ultimate tensile strength (UTS), and elongation of the as-sintered and solutionized Ti-13Mn are 284 Hv and 279 Hv, 840 MPa and 880 MPa, and 0.9% and 1.2%, respectively. Although the elongation of the as-sintered and solutionized Ti-13Mn is lower than that of aged Ti-6A1-4V (Ti64) ELI, its UTS is the same as that of aged Ti64 ELI. Moreover, after Ti-13Mn being subjected to 90% cold rolling, its Vickers hardness and UTS significantly increased to 460 Hv and 1852 MPa, respectively. The UTS of cold-rolled Ti-13Mn can be considered extremely high among those of β-type titanium alloys, including Ti-15V-3Al-3Sn-3Cr. The increase in the dislocation density, the formation of a deformation-induced ω phase, and the decrease in porosity result in the strengthening of the solutionized Ti-13Mn.
AB - Ti-13Mn was fabricated using a metal injection molding method to develop a new low-cost high-strength β-type titanium alloy. The Vickers hardness, ultimate tensile strength (UTS), and elongation of the as-sintered and solutionized Ti-13Mn are 284 Hv and 279 Hv, 840 MPa and 880 MPa, and 0.9% and 1.2%, respectively. Although the elongation of the as-sintered and solutionized Ti-13Mn is lower than that of aged Ti-6A1-4V (Ti64) ELI, its UTS is the same as that of aged Ti64 ELI. Moreover, after Ti-13Mn being subjected to 90% cold rolling, its Vickers hardness and UTS significantly increased to 460 Hv and 1852 MPa, respectively. The UTS of cold-rolled Ti-13Mn can be considered extremely high among those of β-type titanium alloys, including Ti-15V-3Al-3Sn-3Cr. The increase in the dislocation density, the formation of a deformation-induced ω phase, and the decrease in porosity result in the strengthening of the solutionized Ti-13Mn.
KW - High-strength Ti alloy
KW - Low-cost Ti alloy
KW - Metal injection molding
KW - β-type Ti alloy
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M3 - Conference contribution
AN - SCOPUS:84925615100
T3 - Materials Science and Technology Conference and Exhibition 2014, MS and T 2014
SP - 1551
EP - 1558
BT - Materials Science and Technology Conference and Exhibition 2014, MS and T 2014
PB - Association for Iron and Steel Technology, AISTECH
T2 - Materials Science and Technology Conference and Exhibition 2014, MS and T 2014
Y2 - 12 October 2014 through 16 October 2014
ER -