Published 2004
| Version v1
Journal article
Vacancy migration and formation in A356.0 aluminum casting alloys by positron annihilation technique
- 1. Faculty of Science, Physics Dept., El-Minia Univ., El-Minia (Egypt)
- 2. Faculty of Science, Physics Dept., South Valley Univ., Aswan (Egypt)
Description
The migration and formation curves for the A365.0 (Al-7% Si-0.4Mg) casting alloys are investigated by positron lifetime (PL) and S-parameter measurements from room Temperature (RT) to 873 K. The observed dependence of PL τ and S-parameter on quenching temperature (QT) is attributed to vacancy formation. PL results were analyzed applying the two state trapping model and the formation enthalpy Hlvf was estimated by using different methods. (orig.)
Additional details
Publishing Information
- Journal Title
- Materials Science Forum
- Journal Volume
- 445-446
- Journal Page Range
- p. 45-47
- ISSN
- 0255-5476
- CODEN
- MSFOEP
Conference
- Title
- 13. International conference on positron annihilation - ICPA-13
- Dates
- Sep 2003
- Place
- Kyoto (Japan)
INIS
- Country of Publication
- Switzerland
- Country of Input or Organization
- Switzerland
- INIS RN
- 35050777
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALUMINIUM BASE ALLOYS; ANNEALING; ANNIHILATION; FORMATION HEAT; LIFETIME; MAGNESIUM ADDITIONS; POSITRON COLLISIONS; SILICON ADDITIONS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K; TERNARY ALLOY SYSTEMS; VACANCIES
- Descriptors DEC
- ALLOY SYSTEMS; ALLOYS; ALUMINIUM ALLOYS; COLLISIONS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ENTHALPY; HEAT TREATMENTS; INTERACTIONS; MAGNESIUM ALLOYS; PARTICLE INTERACTIONS; PHYSICAL PROPERTIES; POINT DEFECTS; REACTION HEAT; SILICON ALLOYS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES