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Vol.38, No.10, 1304 ~ 1309, 2000
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| Title |
| Aging Behavior and Phase Transformation in the β-C Titanium Alloy |
| 이백희Baek Hee Lee,최병학Byung Hak Choe,최재호Jae Ho Choi,김승언Seung Un Kim,김성준Sung Joon Kim,이용태Yong Tai Lee |
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| Abstract |
| The microstructure of commercially used metastable β-Ti alloy was investigated at the as-quenched state of β-C (Ti-3Al-8V-6Cr-4Mo-4Zr) using a transmission electron microscopy. The microstructure of metastable β phase, so called $quot;tweed structure$quot;, shows fine streak lamella. The microstructure may have significant effect on mechanical properties of hardness, strength and toughness, because structure of the phase provides many heterogeneous nucleation sites during the aging. The commercially used β-Ti alloys do not undergo a martensitic transformation at the state of solution treatment and quenching because of the excess addition of β forming elements such as V, Cr and etc. However, β-C alloy shows the martensite phase transformation in the cases of subzero quenching after solution treatment and tensile test at room temperature after as-quenched state. |
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