Superplasticity in a directionally solidiried multiphase Ni-25Al-25Cr alloy
文献类型：期刊论文
| 作者 | J. T. Guo ; J. Zhou |
| 刊名 | Zeitschrift Fur Metallkunde
 |
| 出版日期 | 2004 |
| 卷号 | 95期号:1页码:22-26 |
| 关键词 | NiAl superplastic behavior casting microstructure internal-stress superplasticity polycrystalline materials large grains transformation deformation microstructure intermetallics mechanism creep iron |
| ISSN号 | 0044-3093 |
| 中文摘要 | A Ni-25Al-25Cr (at.%) alloy was directionally solidified under Ar atmosphere in an A1(2)O(3)-SiO2 ceramic mold by the standard Bridgman method. The microstructure of the as-fabricated alloy was studied using optical microscopy, X-ray diffraction and scanning electron microscopy. The alloy was composed of beta-NiAl dendritic arms, alpha-Cr interdendritic regions, fine alpha-Cr particles in the dendritic arms, and beta-NiAl + alpha-Cr eutectic in the interdendritic regions. The mechanical properties were studied by tensile tests in the temperature range 1123 - 1373 K. The results showed that the alloy exhibits superplastic behavior at appropriate testing conditions. The balance between work hardening (by dislocation glide) and work softening (by dynamic recovery and recrystallization) is responsible for the large tensile elongation of the alloy. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35366]  |
| 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 | J. T. Guo,J. Zhou. Superplasticity in a directionally solidiried multiphase Ni-25Al-25Cr alloy[J]. Zeitschrift Fur Metallkunde,2004,95(1):22-26. |
| APA | J. T. Guo,&J. Zhou.(2004).Superplasticity in a directionally solidiried multiphase Ni-25Al-25Cr alloy.Zeitschrift Fur Metallkunde,95(1),22-26. |
| MLA | J. T. Guo,et al."Superplasticity in a directionally solidiried multiphase Ni-25Al-25Cr alloy".Zeitschrift Fur Metallkunde 95.1(2004):22-26. |
入库方式： OAI收割
来源：金属研究所
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