POSITRON-ANNIHILATION STUDY OF PRECIPITATION IN THE 2219-AL-CU ALLOY

被引：7

作者：

ABIS, S

BARTOLOMEI, P

BIASINI, M

DUPASQUIER, A

VALLI, M

机构：

[1] ENERGIA NUCL & ENERGIA ALTERNAT,DIPARTIMENTO TIB,I-40138 BOLOGNA,ITALY

[2] UNIV CAGLIARI,DIPARTIMENTO SCI FIS,I-09100 CAGLIARI,ITALY

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1992年 / 129卷 / 01期

关键词：

D O I：

10.1002/pssa.2211290112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A positron annihilation study of the 2219 Al-Cu alloy shows the existence of at least three families of positron traps: a) vacancies in pure Al around GP1 zones, b) vacancies inside GP2 zones, c) dislocations in the misfit region around semicoherent and incoherent precipitates. The decomposition of the alloy, obtained by isothermal ageing, is observed by measuring the variations of the fraction of positrons trapped in each family. The analysis of the data gives quantitative information on the dissolution of GP1 zones and on the transformation of GP2 zones in semicoherent precipitates theta' (CuAl2).

引用

页码：143 / 148

页数：6

共 13 条

[1] POSITRON-ANNIHILATION STUDY OF ETA' PRECIPITATION KINETICS IN AN ALUMINUM-ALLOY [J].