Long-range ordering in β-Cu-Zn-Al:: Experimental and theoretical study

被引：19

作者：

Lanzini, F. ^{[1
,2
]}

Romero, R. ^{[1
,3
]}

Stipcich, M. ^{[1
,2
]}

Castro, M. L. ^{[1
,2
]}

机构：

[1] Univ Nacl Ctr Provincia Buenos Aires, Fac Ciencias Exactas, IFIMAT, Buenos Aires, DF, Argentina

[2] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

[3] CICPBA, La Plata, Argentina

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.77.134207

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the order-disorder transition temperatures for bcc Cu-Zn-Al shape-memory alloys measured by means of calorimetric and resistometric techniques. The investigation includes the line of compositions Cu(0.76-x/2)-Zn(x)-Al(0.24-x/2) (0 <= x <= 0.48), i.e., the line with a constant conduction electron per atom ratio, e/a=1.48. Experimental results are confronted with Monte Carlo simulations based on the Blume-Emery-Griffiths Hamiltonian. A set of exchange energies in first and second neighbors is calculated, which allows in close agreement reproduction of the experimental phase diagram.

引用

页数：8

共 29 条

[1] MARTENSITE AND EQUILIBRIUM PHASES IN CU-ZN AND CU-ZN-AL ALLOYS [J].