Superplasticity of directionally solidified NiAl-15Cr alloy at high temperature
文献类型：期刊论文
| 作者 | G. Y. Zhang ; H. Zhang ; H. A. Zhang ; X. M. Wu ; J. T. Guo |
| 刊名 | Journal of Iron and Steel Research International
 |
| 出版日期 | 2006 |
| 卷号 | 13期号:4页码:44-48 |
| 关键词 | intermetallics directional solidification superplasticity microstructure mechanical-properties constituent phases behavior |
| ISSN号 | 1006-706X |
| 中文摘要 | Ni-25Al-15Cr (atomic percent, %) alloy was directionally solidified (DS) under argon atmosphere in an Al2O3-SiO2 ceramic mold by standard Bridgman method. The microstructure of the as-fabricated alloy was studied using optical microscope, X-ray diffractometer, and scanning electron microscope. The alloy consisting of dendritic beta-NiAl phase, interdendritic gamma/gamma' phase, and transient layer gamma' phase, has been investigated. This alloy exhibits superplastic deformation behavior at 1 273-1 373 K over an initial strain rate range of 8.35 X 10(-4)-1.67 x 10(-2) s(-1). The maximum elongation of 280% with strain rate sensitivity index m=0.22 was obtained at the temperature of 1 323 K and an initial strain rate of 8.35 x 10(-3) s(-1). Transmission electron microscopy (TEM) observations indicate that the superplastic deformation stems from the balance between high resistance (by dislocation sliding) and strain softening (by dynamic recovery and recrystallization). |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34683]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | G. Y. Zhang,H. Zhang,H. A. Zhang,et al. Superplasticity of directionally solidified NiAl-15Cr alloy at high temperature[J]. Journal of Iron and Steel Research International,2006,13(4):44-48. |
| APA | G. Y. Zhang,H. Zhang,H. A. Zhang,X. M. Wu,&J. T. Guo.(2006).Superplasticity of directionally solidified NiAl-15Cr alloy at high temperature.Journal of Iron and Steel Research International,13(4),44-48. |
| MLA | G. Y. Zhang,et al."Superplasticity of directionally solidified NiAl-15Cr alloy at high temperature".Journal of Iron and Steel Research International 13.4(2006):44-48. |
入库方式： OAI收割
来源：金属研究所
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