金属学报  1983, Vol. 19 Issue (6): 57-122

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TC9合金在500℃热暴露期间微观组织的变化

张少卿

航空材料研究所

MICROSTRUCTURAL CHANGE OF TC9 Ti-ALLOY DURING THERMAL EXPOSURE AT 500℃

ZHANG Shaoqing (Institute of Aeronautical Materials; Beijing)

张少卿. TC9合金在500℃热暴露期间微观组织的变化[J]. 金属学报, 1983, 19(6): 57-122.
. MICROSTRUCTURAL CHANGE OF TC9 Ti-ALLOY DURING THERMAL EXPOSURE AT 500℃[J]. Acta Metall Sin, 1983, 19(6): 57-122.

摘要 参考文献 相关文章 Metrics 全文: PDF(2170 KB)   摘要: 利用透射电镜方法对500℃长时间热暴露的TC9合金的观察结果表明:热暴露导致残留β相分解析出次生α相和原有的次生α相长大。观察到1型和2型两种次生α相。此外,热暴露还导致Ti_3Al相从初生α相内析出并弥散地分布。延长热暴露时间促使Ti_3Al相颗粒数量增加。在初生α相内析出Ti_3Al相是此合金热暴露致脆的内部组织原因。分析实验结果得出Ti_3Al相与α相的取向关系为(0001)α∥(0001)Ti_3Al,<(?)0>α∥[2(?)]Ti_3Al。 Abstract：The microstructural change of TC9 Ti-alloy(Ti-6.5Al-3.5Mo-2.SSn-0.3Si)during 500℃ long-term exposure has been investigated by TEM. Such phase changes in the alloy on exposure have been observed that the Ti_3Al phase precipitates and disperses in primary a-phase; and the retained β-phase decomposes to cause the precipitation of secondary a-phase and the growth of original secondary a-phase, and the existence of type 1 and 2 of the secondary a-phase is confirmed. As the exposure prolonged, the Ti_3Al phase may gradually be increased and grew up. It is suggested that the precipitation of Ti_3Al in primary a-phase may embrittle the alloy during 500℃ exposure. Experiments identified that the orientation relation ship between Ti_3Al and a-phase is (0001)_a//(0001)_(Ti_3Al) and <2(?)0>_a//[2(?)0]_(Ti_3Al). 收稿日期: 1983-06-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 张少卿 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1983/V19/I6/57 1 Rhodes, C.G.; Williams, J.C., Metall. Trans., 6 (1975) , 2103． 2 Rosenberg, H.W., The Science. Technology and Application of Titanium, Eds. Jaffce, R.I., et al., Pergaman Press, London, 1970, p.851． 3 Crossley, F.A., Trans. Metall. Soc. AIME, 236 (1966) , 1174． 4 Blackburn, M.A., Trans. Metall. Soc. AIME, 239 (1967) , 1200． 5 Genlen, P.C., The Science, Technology and Application of Titanium, Eds. Jaffee, R. I., et al., Pergaman Press, London, 1970, p.349． 6 Majdic, M.; Welsch, G.; Ziegler, G., Titanium and Titanium Alloys, Vol.3, Proc. of the 3rd Int. Conf. on Titanium, Moscow, 1976, Ed. Williams, J.C., Plenum Press, New York, 1982, p.1903． 7 Luetjering, G.; Weissmann, S., Acta Metall., 18 (1970) , 785． 8 Hisaoki, Sasano; Tokuzo Tsujimoto; Hirozo Kimuro, Titanium Science and Technology, Vol.3, Proc. of the Int. Conf. on Titanium, 2nd, Combridge, Mass. May 1972, Eds. Jaffee, R. I.; Burte, H.M., Plenum Press, New York, 1973, p.1635． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed