TY - JOUR
T1 - Cold-Workability and Microstructure Change with β-Phase Stability in High-Strength Ti-Mn Binary Alloys
AU - Gouda, Mohammed K.
AU - Gepreel, Mohamed A.H.
AU - Yamanaka, Kenta
AU - Bian, Haukang
AU - Nakamura, Koichi
AU - Chiba, Akihiko
N1 - Funding Information:
The authors gratefully acknowledge the Ministry of Higher Education (MoHE) of Egypt for providing a scholarship to conduct this study as well as the Japan International Cooperation Agency (JICA). This work is in the frame of the joint ASRT/DST research project.
Funding Information:
The authors gratefully acknowledge the Ministry of Higher Education (MoHE) of Egypt for providing a scholarship to conduct this study as well as the Japan International Cooperation Agency (JICA). This work is in the frame of the joint ASRT/DST research project.
Publisher Copyright:
© 2019, The Minerals, Metals & Materials Society.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - The effect of manganese content (Mn-content) on the beta phase (β-phase) stability, plastic deformability and mechanical behavior of titanium and (8–18 wt.%) manganese low-cost alloys were investigated. The alloys were produced by electric-arc melting under inert argon atmosphere. Microstructure change during cold rolling was evaluated through x-ray diffraction, scanning electron microscope, transmission electron microscope and electron backscatter diffraction in solution-treated and cold-deformed conditions. The β-phase was predominant in all the alloys under study in addition to very fine ω-phase precipitates, especially in the lower Mn-content alloys. Cold workability of the alloys was initially increased in the low Mn-content alloys and then decreased dramatically in the higher Mn-content alloys. The deformation mechanisms were a combination between dislocation slipping and twinning, with a predominance of twinning in the low Mn-content and slipping in the high Mn-content alloys. Tensile test results showed that an ultra-high-strength alloy of about 1950 MPa was obtained in the high Mn-content alloys after cold deformation.
AB - The effect of manganese content (Mn-content) on the beta phase (β-phase) stability, plastic deformability and mechanical behavior of titanium and (8–18 wt.%) manganese low-cost alloys were investigated. The alloys were produced by electric-arc melting under inert argon atmosphere. Microstructure change during cold rolling was evaluated through x-ray diffraction, scanning electron microscope, transmission electron microscope and electron backscatter diffraction in solution-treated and cold-deformed conditions. The β-phase was predominant in all the alloys under study in addition to very fine ω-phase precipitates, especially in the lower Mn-content alloys. Cold workability of the alloys was initially increased in the low Mn-content alloys and then decreased dramatically in the higher Mn-content alloys. The deformation mechanisms were a combination between dislocation slipping and twinning, with a predominance of twinning in the low Mn-content and slipping in the high Mn-content alloys. Tensile test results showed that an ultra-high-strength alloy of about 1950 MPa was obtained in the high Mn-content alloys after cold deformation.
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U2 - 10.1007/s11837-019-03690-7
DO - 10.1007/s11837-019-03690-7
M3 - Article
AN - SCOPUS:85069639616
SN - 1047-4838
VL - 71
SP - 3590
EP - 3599
JO - JOM
JF - JOM
IS - 10
ER -