...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >Short-range order in iron-rich Fe-Cr alloys as revealed by Mossbauer spectroscopy
【24h】

Short-range order in iron-rich Fe-Cr alloys as revealed by Mossbauer spectroscopy

机译：Mossbauer光谱显示富铁Fe-Cr合金的短程有序

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The distribution of Cr atoms in Fe_(100-x)Cr_x alloys with x≤ 25 within the first two coordination shells, 1NN-2NN, around probe ~(57)Fe atoms was studied using Mossbauer spectroscopy. Clear evidence was found that the distribution is not random but instead characteristic of a given atomic configuration (m,n) (m being the number of Cr atoms in 1NN and n in 2NN). The behavior was described quantitatively in terms of average short-range order (SRO) parameters (α_1) (for INN), (α_2) (for 2NN), and (α_(12)) (for 1NN-2NN), as well as in terms of a local SRO parameter α(m,n) for each pair (m,n). A change of sign (inversion) was found both in (α_1) and in (α_2) though going with x in opposite directions. No inversion was observed in (α_(12)), which was either positive or negative depending on the metallurgical state of the samples. These findings prompt a revision of current interpretation of experimental and theoretical results relevant to the issue.
机译：利用Mossbauer光谱学研究了x≤25的Fe_（100-x）Cr_x合金在前两个配位壳1NN-2NN周围的〜（57）Fe原子中Cr原子的分布。明确的证据表明，分布不是随机的，而是给定原子构型（m，n）的特征（m是1NN中的Cr原子数，而2NN中是n）。用平均短程（SRO）参数（α_1）（对于INN），（α_2）（对于2NN）和（α_（12））（对于1NN-2NN）以及根据每对（m，n）的本地SRO参数α（m，n）。尽管在x方向相反，但在（α_1）和（α_2）中都发现了符号变化（反转）。在（α_（12））中未观察到反转，根据样品的冶金状态，该反转为正或负。这些发现促使对与该问题有关的实验和理论结果的当前解释进行修订。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号