研究了由挤压铸造制备的体积分数为15%的Al2O3短纤维((Al2O3)f)增强ZL 109(Al-Si12-Cu1-Mg1-Ni1)复合材料在降载前后的蠕变行为.结果表明:降载后的蠕变可分为瞬时弹性和回蠕变两阶段.瞬时应变与通过测量弹性模量计算的弹性应变基本一致,而随松弛时间的延长,反方向的应变增大,回蠕变的速率减小;回蠕变的出现与纤维在复合材料中引起的偏差应力在降载后变为负值有关,用偏差应力的方法以及应力松弛可以较好地解释回蠕变规律.
参考文献
| [1] | Dragone T L, Nix W D. Acta Metall Mater, 1990; 38:1941 |
| [2] | Venkatesh T A, Dunand D C. Acta Mater, 1999; 47:4275 |
| [3] | Dlouhy A, Eggeler G, Merk N. Acta Metall Mater, 1995;43:535 |
| [4] | Zhu S J, Peng L M, Zhou Q, Ma Z Y, Kuchafová K, Cadek J. Mater Sci Eng, 1999; 268A: 236 |
| [5] | Nieh T G. Metall Trans, 1984; 15A: 139 |
| [6] | Arsenault R J, Fisher R M. Scr Metall, 1983; 17:67 |
| [7] | Wang H W, Wanner A, Bidlingmaier T, Vogt D, Arzt E.Acta Metall Sin, 2000; 36:1223(王浩伟,Wanner A,Bidlingmaier T,Vogt D,Arzt E.金属学报,2000;36:1223) |
| [8] | Dragone T L, Nix W D. Acta Metall Mater, 1992; 40:2781 |
| [9] | Bidlingmaier T, Vogt D, Wanner A, Arzt E, In: Aldinger F, Mughrabi H, eds., Proc Werkstoffwoché 96, Sympos 7,Materialwissenschaftliche Grundlagen, Frankfurt: DGM InformationsgesellschaftmbH, 1996:493 |
| [10] | Clyne T W, Withers P J. An Introduction to Metal Matrix Composites. London: Cambridge University Press, 1993:128 |
| [11] | Argon A S. In: Cahn R W, Haasen P, eds., Physical Metallurgy, Amsterdam: North-Holland Physics, 1996:2135 |
| [12] | Cocks A C F, Ashby M F. Met Sci, 1980:395 |
| [13] | De Silva A R T. J Mech Phys Solids, 1968; 16:169 |
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