THE POST-QUENCH VACANCY BEHAVIOR IN BETA-CU-ZN-AL ALLOY

被引：20

作者：

SALGUEIRO, W

ROMERO, R

SOMOZA, A

AHLERS, M

机构：

[1] UNIV NACL CUYO BARILOCHE,COMIS NACL ENERGIA ATOM,CTR ATOM BARILOCHE,DIV MET,RA-8400 BARILOCHE,ARGENTINA

[2] COMIS INVEST CIENT PROV BUENOS AIRES,RA-1900 LA PLATA,ARGENTINA

[3] NACL CUYO BARILOCHE,INST BALSEIRO,RA-8400 BARILOCHE,ARGENTINA

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1993年 / 138卷 / 01期

关键词：

D O I：

10.1002/pssa.2211380110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Positron lifetime spectroscopy is used to study the long time room temperature behavior of defects retained after quench in beta-Cu-Zn-Al single crystals. Quenching treatments are made in a temperature range from 493 to 1073 K. The decay in the defect concentration with the aging time is attributed to the motion of vacancies to sinks. Assuming the sinks as dislocations, a dislocation density is derived. This density increases with increasing quenching temperature. We find that after long time aging all vacancies disappear for all T(q) used in this work except for 773 K. This behavior is associated to the existence of gamma-phase precipitates which are known to be present after quench from this temperature.

引用

页码：111 / 118

页数：8

共 19 条

[1] POSITRON-ANNIHILATION STUDY OF MARTENSITIC-TRANSFORMATION IN CU-ZN-AL ALLOY [J].