• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Processing Manufacturing of Advanced Materials >Phase Equilibrium of the AuMn-Cu_2MnGa System
【24h】

Phase Equilibrium of the AuMn-Cu_2MnGa System

机译：Aumn-Cu_2mnga系统的相平衡

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Phase equilibrium and phase constitution of the Au-Cu-Ga-Mn quaternary system at 873 K was studied along the AuMn-Cu_2MnGa (=CuMn_(0.5)Ga_(0.5)) both of which are ferromagnetic shape memory alloys. Three alloys were investigated: AuMn, Cu_2MnGa and Au_(0.5)Cu_(0.5)Mn_(0.75)Ga_(0.25) (AuMn:CuMn_(0.5)Ga_(0.5)=1:1). It was found that β_1 ordered bct phase with the axis ratio c/a=0.948 was formed in the AuMn alloy due to the Mn reduction by evaporation during melting. The CuMn_(0.5)Mn_(0.5) alloy was composed of MgZn_2-type Laves phase and Cu_9Al_4-type γ phase. Besides, the following three phases existed in the Au_(0.5)Cu_(0.5)M_(0.75)Ga_(0.25) alloy: Laves, γ and β_2 ordered bct with c/a=1.041. The c/a value of the ordered bct phase is decreased by Cu and/or Ga substitution in AuMn. The values of electron atom ratio (e/a) calculated based on chemical compositions for the γ phases were 1.61 and 1.68, which were close to the ideal value of 1.62 (=21/13). Based on the results, ordered bcc β (transforming into bct at lower temperature), γ and Laves are judged to be equilibrium phases at 873 K along the AuMn-Cu_2MnGa.
机译：相平衡，并在873K下在Au-Cu系Ga的锰四元体系的相组成物沿着AuMn-Cu_2MnGa研究（= CuMn_（0.5）Ga_（0.5））这两者都是铁磁形状记忆合金。三种合金进行了研究：AuMn，Cu_2MnGa和Au_（0.5）CU_（0.5）MN_（0.75）Ga_（0.25）（AuMn：CuMn_（0.5）Ga_（0.5）= 1：1）。据发现，β_1有序BCT相位与轴线比C / A = 0.948，形成在AuMn合金由于熔融时Mn的还原通过蒸发。所述CuMn_（0.5）MN_（0.5）合金组成MgZn_2型Laves相和Cu_9Al_4型γ相。此外，以下三个阶段在Au_存在（0.5）CU_（0.5）M_（0.75）Ga_（0.25）合金：莱夫斯，γ和β_2有序BCT与C / A = 1.041。的C /有序BCT相位的值是由Cu和/或在AuMn Ga的取代减少。的基于所述γ相的化学组成计算出的电子的原子比（E / A）的值分别为1.61和1.68，这是接近的1.62（= 21/13）的理想值。基于这些结果，命令BCCβ（转化成BCT在较低温度下），γ和拉夫斯被判断为平衡相在沿着AuMn-Cu_2MnGa 873K下。

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