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- Title
Temperature and dwell time effect on hardness of Al-base alloys.
- Authors
Abd El-Salam, F.; Wahab, L. A.; Nada, R. H.; Zahran, H. Y.
- Abstract
The hardness of Al–5wt%Zn (alloy A) and Al–5wt%Zn–0.25wt%In (alloy B) was measured at room temperature for samples heat treated in the range 300–453 K and dwell times in the range 30–300 s under 50 gm load. Softening was observed for all the samples and the hardness decreased with increasing temperature and/or dwell time. Hardness drop was larger for alloy (B), which in general showed higher hardness than alloy (A). The stress exponent n increased with increasing temperature and showed high values falling in the power law breakdown region. The parameters deduced from the analysis of X-rays data and micrographs were found to be consistant with the calculated mechanical data.
- Subjects
ALUMINUM alloys; ALLOYS; LIGHT metals; HARDNESS; METALLIC composites; MATERIALS science
- Publication
Journal of Materials Science, 2007, Vol 42, Issue 10, p3661
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-006-1343-6