研究了冷轧多晶Ni3Al-(0.2%,0.6%,1.0%,1.5%)Zr(原子分数)合金在不同热处理温度(800-1100℃)下的显微组织和力学性能.结果表明,适当的热处理温度,可使无硼Ni3Al-Zr多晶合金获得优良的室温拉伸强度和塑性.随着热处理温度的升高,不同Zr含量Ni3Al合金的再结晶体积分数增加,再结晶晶粒尺寸增大,室温拉伸强度下降.随着合金中Zr含量的增加,再结晶温度降低,再结晶晶粒尺寸减小.不同Zr含量Ni3Al合金的拉伸塑性明显依赖于热处理温度.对于低Zr(0.2%)合金,在1000℃热处理后,拉伸塑性最佳;对于中Zr(0.6%)合金,在850℃热处理后,拉伸塑性达到最大值;对于高Zr(≥1.0%)合金,拉伸塑性峰值出现在900℃热处理下,当热处理温度超过900℃,拉伸塑性显著降低.
参考文献
| [1] | Westbrook J H. Trans AIME, 1957; 209:898 |
| [2] | Flinn P A. Trans AIME, 1960; 218:145 |
| [3] | Liu C T, White C L, Horton J A. Acta Metall, 1985; 33:213 |
| [4] | Guo J T, Zheng Z. Sun C, Zhu Y X. In: Shi C X, Li H D, Alexander S eds, The First Pacific Rim International Conference on Advanced Materials and Processing, Pennsylvania: TMS, 1992:805 |
| [5] | George E P, Liu C T, Pope D P. Scr Metall Mater, 1992;28:365 |
| [6] | Hanada S, Chiba A, Guo H Z, Watanabe S. Proc Critical Issues in the Development of High T. emperture Structural Materials, 1993:478 |
| [7] | Zheng Z, Wu W W, Guo J T, Zhu Y X. Acta Metall Sin,1992; 28A: 202(郑志,吴伟文,郭建亭,朱耀霄.金属学报,1992;28A:202) |
| [8] | Hanada S, Watanabe S,Izumi O.J Mater Sci,1985;21:203 |
| [9] | Thompson E R,Lemkey F D.Trans ASM 62,1969;140 |
| [10] | Guo J T,Gu Y F,Lin D L. Acta Metall Sin,1995;31:121(郭建亭,谷月峰,林栋梁.金属学报,1995;31:121) |
| [11] | Karg A V, Fornwalt D E, Kriege O H. J Inst Met, 1971;99:301 |
| [12] | Cheng X Y, Wan X J, Guo J T, Liu C T. Scr Mater, 1998;38:959 |
| [13] | Wan X J, Zhou J H, Jing K L. Scr Metall Mater, 1992;26:473 |
| [14] | Gao S J, Su J Q, Hu Z Q. Key Eng Mater, 1998; 145:1031 |
| [15] | Su J Q, Gao S J, Yu B X, Guo J T. J Mater Sci, 1997;32:1201 |
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