Vacancies and stabilisation in martensitic Cu-Zn-Al single crystals

被引：21

作者：

Pelegrina, JL ^{[1
]}

Ahlers, M

机构：

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

[2] Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 358卷 / 1-2期

关键词：

Cu-based alloys; martensitic transformation; stabilisation; vacancies;

D O I：

10.1016/S0921-5093(03)00325-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The stabilisation of the 18R stress induced martensite in Cu-Zn-Al single crystals has been measured as a function of the ageing time and the previous thermal treatment in the high temperature beta phase. It is found that the initial and final stages of the stabilisation present a different behavior, and only the latter is related to the quenched-in vacancy concentration. It is confirmed that the martensite does not reach its thermodynamical equilibrium state, although the vacancies remain mobile. It is suggested that the evolution of the martensite can be rationalised by the combined action of mobile vacancies and precursors of the gamma equilibrium phase. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：310 / 317

页数：8

共 14 条

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

AHLERS, M .

PROGRESS IN MATERIALS SCIENCE, 1986, 30 (03) :135-186

[2] THE STABILIZATION OF MARTENSITE IN CU-ZN-AL ALLOYS [J].

ARAB, AA ;

AHLERS, M .

ACTA METALLURGICA, 1988, 36 (09) :2627-2638

[3] Isothermal γ precipitation in a β Cu-Zn-Al alloy [J].

Castro, ML ;

Romero, R .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 255 (1-2) :1-6

[4] DETERMINATION OF THE VACANCY FORMATION ENERGY FOR DIFFERENT SUB-LATTICES OF ORDERED BETA-CUZN ALLOY BY POSITRON-ANNIHILATION METHOD [J].

CHABIK, S ;

ROZENFELD, B .

APPLIED PHYSICS, 1981, 25 (02) :143-151

[5]

Ghosh G, 1992, TERNARY ALLOYS, V5, P92

[6]

MASSALSKI TB, 1978, PROGR MAT SCI, V27, P1

[7] Calorimetry in CuZn-Al alloys under different structural and microstructural conditions [J].

Pelegrina, JL ;

Romero, R .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 282 (1-2) :16-22

[8] ORDERING IN TERNARY BETA PHASE CU ZN AL-ALLOYS [J].

RAPACIOLI, R ;

AHLERS, M .

SCRIPTA METALLURGICA, 1977, 11 (12) :1147-1150

[9] POSITRON LIFETIME SPECTROSCOPY IN QUENCHED BETA-CU-ZN-AL [J].

ROMERO, R ;

SALGUEIRO, W ;

SOMOZA, A .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1992, 133 (02) :277-282

[10] THE POST-QUENCH VACANCY BEHAVIOR IN BETA-CU-ZN-AL ALLOY [J].

SALGUEIRO, W ;

ROMERO, R ;

SOMOZA, A ;

AHLERS, M .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1993, 138 (01) :111-118

← 1 2 →