Mechanical and thermodynamical properties of β - Cu - Al - Mn alloys along the Cu3Al → Cu2AlMn compositional line

被引：9
|
作者：
Ales, Alejandro [1 ,2 ]
Lanzini, Fernando [1 ,2 ]
机构：
[1] Univ Nacl Ctr Prov Buenos Aires UNCPBA, Inst Fis Mat Tandil IFIMAT, Pinto 399, RA-7000 Tandil, Argentina
[2] Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
来源：
SOLID STATE COMMUNICATIONS | 2020年 / 319卷
关键词：
Cu-Al-Mn; First-principles calculations; Elastic constants; Debye temperature; Quasi-harmonic approximation; SHAPE-MEMORY ALLOYS; ELASTIC-CONSTANTS; 1ST-PRINCIPLES CALCULATIONS; MARTENSITIC-TRANSFORMATION; SPINODAL DECOMPOSITION; PHASE; ANISOTROPY; CRYSTALS; SOLIDS; RATIOS;
D O I：
10.1016/j.ssc.2020.113980
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The elastic properties of Cu - Al - Mn alloys with compositions along the Cu3Al -> Cu2AlMn line and bcc-based structures, are studied by means of first-principles calculations. From the calculated elastic constants, the Zener's anisotropy, sound velocities and Debye temperature are determined. The theoretical results compare well with the available experimental data. The influence of vibrations is introduced through the quasi-harmonic Debye model, and different properties are studied as functions of temperature and composition.
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页数：8
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