Published February 1977 | Version v1
Journal article Metadata-only

Studies of martensitic transformation in Cu-Al alloys by positron annihilation

Creators

  • 1. Tokyo Univ. (Japan). Dept. of Metallurgy and Materials Science

Description

The reverse martensitic transformations in Cu-23.5 at-%Al, and Cu-25.3 at-%Al have been studied by means of positron annihilation. The coincidence counting rates of angular correlation were measured as a function of the specimen temperature. The change of counting rates in heating run was rather different from that in cooling run due to the influence of tempering of martensitic structure. The results were interpreted by the change of the formation energy of a vacancy with phase transition. Influence of heating rate is also discussed. (orig.)

Abstract (German)

Mit der Methode der Positron-Vernichtung wurde in Cu 23,5 at-%Al und Cu 25,3 at-%Al die martensitische Rueckwandlung untersucht. Die Koinzidenzzaehlrate der Winkelkorrelation wurde als Funktion der Probentemperatur gemessen. Die Zaehlratenaenderungen beim Aufheizen und Abkuehlen zeigten deutliche Unterschiede aufgrund des Temperns der Martensitstruktur. Die Ergebnisse werden mit der Aenderung der Fehlstellen-Bildungsenergie beim Phasenuebergang erklaert. Ausserdem wird der Einfluss der Aufheizgeschwindigkeit diskutiert. (orig.)

Additional details

Identifiers

DOI
10.1007/bf00896144;

Publishing Information

Journal Title
Applied Physics
Journal Volume
12
Journal Issue
2
Series
Appl. Phys.
Journal Page Range
179-181
ISSN
0340-3793

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
8311544
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ALUMINIUM ALLOYS; ANGULAR CORRELATION; ANNIHILATION; COPPER BASE ALLOYS; CRYSTAL-PHASE TRANSFORMATIONS; ELASTICITY; GAMMA RADIATION; POSITRONS; TEMPERATURE DEPENDENCE; VACANCIES
Descriptors DEC
ALLOYS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; COPPER ALLOYS; CORRELATIONS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; INTERACTIONS; IONIZING RADIATIONS; LEPTONS; MATTER; MECHANICAL PROPERTIES; PARTICLE INTERACTIONS; PHASE TRANSFORMATIONS; POINT DEFECTS; RADIATIONS; TENSILE PROPERTIES; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
3 figs.; 14 refs.; Updated automatically by Metadata and Full-Text Enrichment Agent