Early stages of superplasticity and positron lifetime spectroscopy in an Al-Mg-Cu alloy
- Universidad Nacional del Centro de la Provincia de Buenos Aires (Argentina). Instituto de Fisica de Materiales Tandil
In the present paper, by using positron lifetime technique, a careful study is carried out to analyze the microstructural changes induced on samples of an Al-based commercial alloy (Al-Mg-Cu-Mn-Cr) by superplastic deformation in the early stages of superplastic behavior of the alloy (strain range from 0.2% to 100%). These results are compared with those obtained on specimens only heat treated at the same temperature and for a time equivalent to the elapsed time during each tensile test, in order to evaluate the thermal contribution to the microstructural changes induced during the superplastic deformation process. Moreover, the positron results were linked with the microstructural evolution of the samples followed by means of optical microscopy and Vickers microhardness technique.
- OSTI ID:
- 271659
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 1 Vol. 35; ISSN 1359-6462; ISSN XZ503X
- Country of Publication:
- United States
- Language:
- English
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