研究了共晶NiAl-9Mo合金的超塑性行为及其变形机制该合金的微观组织由NiAl以及NiAl和α-Mo共晶体组成.在1323-1373 K温度区间,以5.55×10-5-1.11×10-4s-1的应变速率拉伸变形时,表现出超塑性行为,最大延伸率达到180%,应变速率敏感性指数达到0.56.超塑性的变形机制为初生NiAl基体的晶界滑动,断裂起源于超塑性变形过程中产生的孔洞.
参考文献
| [1] | Johnson D R, Chen X F, Oliver B F. Intermetallics, 1995;3:99 |
| [2] | Kim M S, Hanada S. Mater Trans JIM, 1989; 30:77 |
| [3] | Kim W Y, Hanada S. Scr Mater, 1997; 37:1053 |
| [4] | Takasugi T, Hanada S. Scr Metall Mater, 1991; 25:889 |
| [5] | Imayer T M, Kabyshe O A. Acta Metall Mater, 1992; 40:581 |
| [6] | Chen R S, Guo J T, Yin W M, Zhou J Y. Acta Metall Sin, 1998; 34:1121(陈荣石,郭建亭,殷为民,周继扬.金属学报,1998;34:1121) |
| [7] | Li D Q, Shan A D, Lin D L. Scr Metall Mater, 1995; 33:681 |
| [8] | Lin D L, Li D Q, Liu Y. Intermetallics, 1998; 6:243 |
| [9] | Fujino S, Karoishgi N, Youshino M. Scr Mater, 1997; 37:673 |
| [10] | akshi P K, Kashyap B P. J Mater Sci, 1995; 30:5065 |
| [11] | hokshi A H, Langdon T G. Mater Sci Technol, 1989; 5:435 |
| [12] | Backofen, Turner I R, Avery D H. Trans ASM Q, 1964;57:980 |
| [13] | Bieler T R. Ann Rev Mater Sci, 1996; 26:75 |
| [14] | Noebe R D, Cullers C L. J Mater Res, 1992; 7:604 |
| [15] | Du X H, Guo J T, Zhou B D. Acta Metall Sin, 2001; 37:1121(杜兴蒿,郭建亭,周彼德.金属学报,2001;37:1121) |
| [16] | Zhou W L, Guo J T, Chen R S, Zhou J Y. Acta Metall Sin, 1999; 35:995(周文龙,郭建亭,陈荣石,周继扬金属学报,1999;35:995) |
| [17] | Zhou W L, Guo J T, Chen R S, Zhou J Y. Acta Metall Sin, 2000; 36:796(周文龙,郭建亭,陈荣石,周继扬.金属学报,2000;36:796) |
| [18] | Chen R S, Guo J T, Yin W M, Zhou J Y. Scr Mater, 1999;40:209 |
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