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金属学报  2004, Vol. 40 Issue (1): 67-71     
  论文 本期目录 | 过刊浏览 |
磷对NiAl合金的软化作用
周健;郭建亭
中国科学院金属研究所
Softening Of Nial Alloy Induced By Phosphorous
ZHOU Jian; GUO Jianting
Institute of Metal Research; The Chinese Academy of Sciences
引用本文:

周健; 郭建亭 . 磷对NiAl合金的软化作用[J]. 金属学报, 2004, 40(1): 67-71 .
, . Softening Of Nial Alloy Induced By Phosphorous[J]. Acta Metall Sin, 2004, 40(1): 67-71 .

全文: PDF(264 KB)  
摘要: 研究了磷对NiAl合金组织和性能的影响. 适量的磷能够导致多晶NiAl的软化, 即屈服强度和硬度降低以及室温压缩塑性提高. 磷固溶于晶格内造成晶内软化, 偏聚于晶界造成晶界硬化. 磷捕获间隙杂质原子或降低合金的Peierls力是造成晶内软化的原因. 合金宏观变形(压缩性能)行为来自晶内软化和晶界硬化的竞争过程.
关键词 NiAl压缩实验晶界偏聚    
Abstract:The effect of phosphorous addition on microstructure and mechanical properties of NiAl alloy has been investigated. The results indicate that a certain level of P additions can induce softening of polycrystalline NiAl, i.e., decreases yield stress and hardness and increases room temperature compressive ductility. Trapping of interstitial atoms and reducing of Peierls stress are proposed to be responsible for the softening. In addition, the macro--deforming behavior (compressive properties) of the alloy results from a competitive process of softening of grain interiors and hardening of grain boundaries.
Key wordsNiAl    compressive test
收稿日期: 2002-12-06     
ZTFLH:  TG113.25  
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