Improvement of compressive strength and ductility in NiAl Cr(Nb)/Dy alloy by rapid solidification and HIP treatment
文献类型：期刊论文
| 作者 | L. Y. Sheng ; F. Yang ; T. F. Xi ; Y. F. Zheng ; J. T. Guo |
| 刊名 | Intermetallics
 |
| 出版日期 | 2012 |
| 卷号 | 27页码:14-20 |
| 关键词 | NiAl Rapid solidification Microstructure Mechanical properties HIP treatment nial-cr(mo)-hf eutectic alloy high-temperature application mechanical-properties deformation-behavior laves phase ta alloys microstructure compound |
| ISSN号 | 0966-9795 |
| 中文摘要 | The NiAl Cr(Nb)/Dy alloy was fabricated by conventionally casting and rapid solidification and treated by hot isostatic pressing treatment (HIP). The results reveal that Cr2Nb phase contains much of Ni and Al elements and retains the C14 crystal structure at room temperature. The rapid solidification refines the NiAl phase, Cr2Nb phase and needle-like Cr2Nb precipitates in NiAl matrix. Moreover the rapid solidification increases alpha-Cr phase and results in the formation of Cr7Ni3 phase with stacking faults and microtwins inside. The HIP treatment transforms the needle-like Cr2Nb precipitate in the NiAl phase into sphere shape and blunts the tip of the Cr2Nb phases along the NiAl phase boundary. In addition, the HIP treatment leads to some moveable dislocations in the alloy, which is beneficial to the compressive ductility. The mechanical test shows the rapidly solidified alloy with HIP treatment has the best mechanical properties, whose compressive ductility is more than ten times that of the as cast alloy. (C) 2012 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60220]  |
| 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 | L. Y. Sheng,F. Yang,T. F. Xi,et al. Improvement of compressive strength and ductility in NiAl Cr(Nb)/Dy alloy by rapid solidification and HIP treatment[J]. Intermetallics,2012,27:14-20. |
| APA | L. Y. Sheng,F. Yang,T. F. Xi,Y. F. Zheng,&J. T. Guo.(2012).Improvement of compressive strength and ductility in NiAl Cr(Nb)/Dy alloy by rapid solidification and HIP treatment.Intermetallics,27,14-20. |
| MLA | L. Y. Sheng,et al."Improvement of compressive strength and ductility in NiAl Cr(Nb)/Dy alloy by rapid solidification and HIP treatment".Intermetallics 27(2012):14-20. |
入库方式： OAI收割
来源：金属研究所
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