Effect of vacancies on the tensile properties of Fe-40Al single crystals in air and vacuum

Authors
Yang, Y Baker, I George, EP
Citation
Y. Yang et al., Effect of vacancies on the tensile properties of Fe-40Al single crystals in air and vacuum, MATER CHAR, 42(2-3), 1999, pp. 161-167
Citations number
23
Categorie Soggetti
Material Science & Engineering
Journal title
MATERIALS CHARACTERIZATION
ISSN journal
10445803 → ACNP
Volume
42
Issue
2-3
Year of publication
1999
Pages
161 - 167
Database
ISI
SICI code
1044-5803(199902/03)42:2-3<161:EOVOTT>2.0.ZU;2-I
Abstract
Tensile tests in both air and vacuum have been performed on Fe-40Al single crystals containing two different vacancy concentrations. It is shown that the room temperature fracture strengths are significantly increased but the elongations are decreased in both test environments at high vacancy concen tration. The fracture mechanisms are controlled by the vacancy concentratio n, with vacancies promoting the fracture along the slip planes. (C) Elsevie r Science Inc., 1999. All rights reserved.