Microstructure characteristics and compressive properties of NiAl-based multiphase alloy during heat treatments
文献类型：期刊论文
| 作者 | L. Y. Sheng ; Y. Xie ; T. F. Xi ; J. T. Guo ; Y. F. Zheng ; H. Q. Ye |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2011 |
| 卷号 | 528期号:29-30页码:8324-8331 |
| 关键词 | Intermetallics Microstructure Heat treatments Compressive properties mechanical-properties eutectic alloy deformation-behavior udimet 720li precipitation phase superalloy nickel cr stability |
| ISSN号 | 0921-5093 |
| 中文摘要 | The alloy of Ni-Al26-Cr15-Co6-Ti3-Mo2-Nb0.5-Ho0.1 (at.%) was heat-treated and studied by microstructure examination and compressive test. The results reveal that in the as-cast alloy, alpha-Cr, sigma and mu phases are segregated along the NiAl phase boundary and form into network. Small Ni(2)AlTi, Cr(2)Nb and Ni(2)Al(3)Ho particles precipitate at NiAl grain boundary. The subsequent solid solution treatment with rapid and intermediate cooling rate transforms the net-like precipitating phases into discontinuous ones, but the rapid cooling leads to micro-cracks along phase boundary. However the lower cooling rate results in spherical a-Cr particle and needle-like Ni(3)Alphase in NiAl matrix. The short-term aging after solid solution treatment promotes the coarsening of Ni(3)Al lathes and a-Cr particles, and an orientation relationship of [00 (1) over bar](beta)parallel to[(1) over bar 10](lambda), and (110)(beta)parallel to(111)(gamma), is found between lath-shaped Ni(3)Al phase and NiAl matrix. In addition, the p. phases are substituted by sigma and some Cr(3)Ni(2) phases. The long-term aging treatment reduces Ni(3)Al, sigma and mu phases and coarsens the alpha-Cr phase further. The solid solution treatment and short-term aging improve the mechanical properties of the NiAl-based multiphase alloy significantly. (C) 2011 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30654]  |
| 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,Y. Xie,T. F. Xi,et al. Microstructure characteristics and compressive properties of NiAl-based multiphase alloy during heat treatments[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2011,528(29-30):8324-8331. |
| APA | L. Y. Sheng,Y. Xie,T. F. Xi,J. T. Guo,Y. F. Zheng,&H. Q. Ye.(2011).Microstructure characteristics and compressive properties of NiAl-based multiphase alloy during heat treatments.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,528(29-30),8324-8331. |
| MLA | L. Y. Sheng,et al."Microstructure characteristics and compressive properties of NiAl-based multiphase alloy during heat treatments".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 528.29-30(2011):8324-8331. |
入库方式： OAI收割
来源：金属研究所
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