γ-TiAl基金属间化合物近γ组织强度的细观力学分析

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材料工程 ›› 2001, Vol. 0 ›› Issue (3) : 16-19,22.

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研究与应用

γ-TiAl基金属间化合物近γ组织强度的细观力学分析

郭富安^1,3, 杨军², 郑瑞廷¹, 张永刚¹, V. Ji³

作者信息 +

Micro-mechanics Analysis of Strength of Near γ Microstructure of TiAl-based Intermetallic Alloys

GUO Fu-an^1,3, YANG Jun², ZHENG Rui-ting¹, ZHANG Yong-gang¹, V. Ji³

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摘要

通过选用不同Al含量的γ-TiAl基金属间化合物及采用适当的热加工工艺及热处理工艺,获得了几种含有不同α₂体积含量的近γ组织,采用室温拉伸试验研究α₂相的含量对合金力学性能的影响。然后利用细观力学的方法分析了含有不同α₂体积含量的合金的强度随外载的变化关系。结果表明,α₂相的体积含量对合金的强度有较大的影响,所选用细观力学模型的计算结果和试验结果吻合较好,并对实验曲线及计算曲线的差异进行了分析。

Abstract

In order to study the influence of the volume fraction of α₂ phase on the mechanical properties of TiAl-based intermetallic alloys, room-temperature tensile test was carried out on a series of near γ TiAl alloys with different volume fractions of α₂ phase due to different Al contents, then a micro-mechanics model was employed to analysis the mechanical properties of these alloys. There-sults show that the volume fraction of α₂ phase has a strong effect on the mechanical properties of near γ alloys, and the calculated results are in good agreement with the experiment, the difference of calculated and experimetal results was also discussed.

导出引用

郭富安, 杨军, 郑瑞廷, 张永刚, V. Ji. γ-TiAl基金属间化合物近γ组织强度的细观力学分析[J]. 材料工程, 2001, 0(3): 16-19,22

GUO Fu-an, YANG Jun, ZHENG Rui-ting, ZHANG Yong-gang, V. Ji. Micro-mechanics Analysis of Strength of Near γ Microstructure of TiAl-based Intermetallic Alloys[J]. Journal of Materials Engineering, 2001, 0(3): 16-19,22

中图分类号： O346

参考文献

[1] Y W Kim. JOM, 1994, 46:30-40.
[2] C Koerpe, A Bartels, J Seeger, and H Mecking. Metall Trans A, 1993, 24A:1795.
[3] C T Forwood, M A Gibson, P R Miller, C J Rossouw and A J Morton. in Stru ctural Intermellics 1997, Edited by M V Nathal, R Darolia, C T Liu, P L Marti n, D B Miracle, R Wagner, and M Yamaguchi, The Minerals & Materials Socie ty, 1997:99-105.
[4] 杜善义,王彪.复合材料细观力学[M].科学出版社,1998.
[5] T Mori and K Tanaka. Acta Metall, 1973, 21:571-574.
[6] J D Eshelby, Proc Roy Soc, 1959, A252:561-569.
[7] Mura T Micromechanics of Defects in Solids. Martinus Nijhoff Publisher 1982.
[8] ] Tandon G P, Weng G J. Journal of Applied Mechanics, 1988, 55:126.
[9] Shyh-chin huang,et al. Hall Metall Trans A, 1991, 22A:427.
[10] S E Kim,et al. in Gamma Titanium Aluminides, Edited by Y-W Kim, R Wagner, and M Yamaguchi, The Mineals, Metals & Materi als Society, 1995, 737-744.
[11] M A Morris, Mat Sci & Eng, 1997, A224:12-20.