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| The influence of multi heat-treatment on microstructure and mechanical properties of TC4 alloy |
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| 中国科学院金属研究所 |
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Cite this article:
. The influence of multi heat-treatment on microstructure and mechanical properties of TC4 alloy. Chin J Mater Res, 2008, 22(5): 555-560.
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Abstract The influence of multi heat-treatment on microstructure and mechanical properties of TC4 alloy is discussed in this article. The first heat-treatment of multi-treatment was executed in single phase region following air cooling or water quenching. The secondary heat-treatment was operated at different temperatures in + phase region, also following different cooling rates. Finally, the aging treatment was executed. The results show that multi heat-treatment can modulate the morphology of microstructure, including length/thickness ratio of lamella and the morphology of fine secondary . Mechanical experiments results show that certain multi heat-treatment can enhance both tensile properties and fracture toughness, the bi-lamellar microstructure can improve the resistance to crack propagation.
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Received: 13 December 2007
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