Bonding characteristics of micro-alloyed B2NiAl in relation to site occupancies and phase stability
文献类型：期刊论文
| 作者 | Y. L. Hao ; R. Yang ; Q. M. Hu ; D. Li ; Y. Song ; M. Niinomi |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2003 |
| 卷号 | 51期号:18页码:5545-5554 |
| 关键词 | intermetallic phases (nickel aluminides) lattice defects (vacancies) phase transformations (ordering) ab initio electron theory b2 intermetallic compounds ternary additions first-principles defect structure nial alloys fe preference elements ti substitution |
| ISSN号 | 1359-6454 |
| 中文摘要 | A recently developed mean-field model has been combined with first principles calculations of binding energy to investigate the site occupancies of micro-alloying elements and vacancies in NiAl as well as the stability of the micro-alloyed B2 phase with respect to disordering and second-phase formation. The theoretical results suggest that the transition metal elements in the same row of the periodic table increasingly tend to the Ni sublattice with increasing atomic number. Micro-alloying addition tends to decrease the vacancy concentration of NiAl alloys. Alloying with X that substitutes for Ni is predicted to have the sides of its solubility lobe parallel to the Ni-X side of the isotherm, but parallel to the Al-X side if X substitutes for Al. Micro-alloying was shown to raise the ordering temperature of the B2 phase over the corresponding binary alloy, in contrast with the effect of vacancies. Alloying effects on ordering temperature and the formation of point defects appear independent of the site substitution behaviour, and are less significant for 3d than for 4d and 5d transition metal elements. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35845]  |
| 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 | Y. L. Hao,R. Yang,Q. M. Hu,et al. Bonding characteristics of micro-alloyed B2NiAl in relation to site occupancies and phase stability[J]. Acta Materialia,2003,51(18):5545-5554. |
| APA | Y. L. Hao,R. Yang,Q. M. Hu,D. Li,Y. Song,&M. Niinomi.(2003).Bonding characteristics of micro-alloyed B2NiAl in relation to site occupancies and phase stability.Acta Materialia,51(18),5545-5554. |
| MLA | Y. L. Hao,et al."Bonding characteristics of micro-alloyed B2NiAl in relation to site occupancies and phase stability".Acta Materialia 51.18(2003):5545-5554. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。