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| EMBRITTLEMENT OF TITANIUM ALLOY TA8 AFTER LONG-TIME EXPOSURE AT HIGH TEMPERATURES |
| Yang Chuan-zheng Huang Shao-quan Wang Nai-li He Fu-xiang Su Ying-Wei (Shanghai Institute of Metallurgy; Academia Sinica) |
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Cite this article:
Yang Chuan-zheng Huang Shao-quan Wang Nai-li He Fu-xiang Su Ying-Wei (Shanghai Institute of Metallurgy; Academia Sinica). EMBRITTLEMENT OF TITANIUM ALLOY TA8 AFTER LONG-TIME EXPOSURE AT HIGH TEMPERATURES. Acta Metall Sin, 1978, 14(1): 58-65.
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Abstract An investigation of the thermal stability of titanium alloy TA8 (Ti-5Al-2.5Sn-3Cu-1.5Zr) showed that the embrittlement was closely related to the surface structures of the alloy. The formation process of such surface structures has been discussed. On account of the fact that oxygen diffuses into the matrix of the alloy during thermal exposure, the precipitation of Ti_2Cu and α-ordered phase in high oxygen solid-soluted surface and/or near surface layers may play an important role in causing the embrittlement of the alloy.
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Received: 18 January 1978
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[1] Soltis, P. J., Trans. ALME, 233 (1965) , 903．
[2] Shanblen, C. E., Met. Trans., 2 (1971) , 277．
[3] 待发表工作.
[4] Zwicker, V., Werst. Korros., 19 (1968) , 905．
[5] Shamblen, C. E. and Redden, T. K., The Science, Technology and Application of Titanium, ed. by R. I. Jaffee and N. E. Promisel, Pergamon, London, 1970, p. 199．
[6] 待发表工作.
[7] Menzies, I. A. and Stratford, K. N., J. Less-Common Metals, 12 (1967) , 85．
[8] #12
[9] Metals Reference Book, Vol. Ⅱ, 3rd Ed., by C. J. Smithells, Butterworths, London, 1962, p. 655． |
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