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| The relationship of heat treatment--microstructures--mechanical properties of the TC18 titanium alloy |
| GUAN Jie; LIU Jianrong; LEI Jiafeng; LIU YuYin |
| Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110016 |
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Cite this article:
GUAN Jie LIU Jianrong LEI Jiafeng LIU YuYin. The relationship of heat treatment--microstructures--mechanical properties of the TC18 titanium alloy. Chin J Mater Res, 2009, 23(1): 77-82.
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Abstract Through the 3×3 orthogonal experimental design methods, the influences of the different temperature stages of 2–step annealing heat treatment on the mechanical properties and the microstructures of the TC18 titanium alloy were investigated. The influence of the changes of temperature on the mechanical properties was quantitatively analyzed. The results show that the stress level can be increased by increasing the middle–stage of temperature and lowering the low–stage of temperature; the elongation level can be increased by lowering the high–stage temperature and increasing the low–stage temperature; and the impact toughness can be upgraded also by lowering the high–stage and the middle–stage temperature. The stress levels of TC18 titanium can be controlled by the amounts of the β phase and αs phase, the shape of αs phase; the elongation levels can be controlled by the shape of αp phase and the shape of the αs phase; and the impact toughness is controlled by the shape and the amounts of the αp phase.
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Received: 28 February 2008
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