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。
In order to study the influence of the volume fraction of α2phase on the mechanical properties of TiAl-based intermetallic alloys, room-temperatur e tensile test was carried out on a series of near γ TiAl alloys with differen t vo lume fractions of α2 phase due to different Al contents, then a micro-mechan ics model was employed to analysis the mechanical properties of these alloys. T h e results show that the volume fraction of α2 phase has a strong effect on th e mechanical properties of near γ alloys, and the calculated results are in goo d agreement with the experiment, the difference of calculated and experimetal re sults was also discussed
参考文献
| [1] | Y W Kim .[J].Journal of The Minerals,Metals & Materials Society,1994,46:30-40. |
| [2] | C Koerpe;A Bartels;J Seeger .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1993,24A:1795. |
| [3] | C T Forwood;M A Gibson;P R Miller;C J Rossouw and A J Morton.[J].The Minerals Materials Society,1997:99-105. |
| [4] | 杜善义;王彪.复合材料细观力学[M].北京:科学出版社,1998 |
| [5] | T Mori;K Tanaka .[J].Acta Materialia,1973,21:571-574. |
| [6] | J D Eshelby .[J].Proceedings of the Royal Society of London,1959,A252:561-569. |
| [7] | Mura T.Micromechanics of Defects in Solids[M].Martinus Nijhoff Publisher,1982 |
| [8] | Tandon G P;Weng G J .[J].Journal of Applied Mechanics,Transactions ASME,1988,55:126. |
| [9] | Shyh-chin huang et al.[J].International Journal of Metallurgical Transactions A,1991,22A:427. |
| [10] | S E Kim.[J].Minerals,Metals & Materials Society,1995:737-744. |
| [11] | M A Morris .[J].Materials Science and Engineering,1997,A224:12-20. |
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