Journal article
Strain hardening regimes and microstructural evolution during large strain compression of low stacking fault energy fcc alloys that form deformation twins
Metallurgical and materials transactions. A, Physical metallurgy and materials science, v 28A(9), pp 1781-1795
01 Sep 1997
Abstract
Constant true strain rate simple compression tests were conducted on annealed, polycrystalline samples of alpha-brass and MP35N, and the evolution of the true stress (sigma)-true strain (epsilon) response was documented. From these data, the strain hardening rate was numerically computed, normalized with shear modulus (G), and plotted against both (sigma - sigma0)/G (sigma-0 being the initial yield strength of the alloy) and epsilon. Such normalized plots for alpha-brass and MP35N were found to be almost identical to each other, and revealed four distinct stages of strain hardening: stage A, with a steadily decreasing strain hardening rate up to a true strain of about -0.08; stage B, with an almost constant strain hardening rate up to a true strain of about -0.2; stage C, with a steadily decreasing strain hardening rate up to a true strain of about -0.55; and stage D, again with an almost constant strain hardening rate. Optical microscopy and TEM were performed on deformed samples. The results suggested that stage A corresponded to stage III strain hardening (dynamic recovery) of higher stacking fault energy fcc metals such as copper. (Author)
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Details
- Title
- Strain hardening regimes and microstructural evolution during large strain compression of low stacking fault energy fcc alloys that form deformation twins
- Creators
- Sirous Asgari - Drexel UniversityEhab El-Danaf - Drexel UniversitySurya Kalidindi - Drexel UniversityRoger Doherty - Drexel University
- Publication Details
- Metallurgical and materials transactions. A, Physical metallurgy and materials science, v 28A(9), pp 1781-1795
- Publisher
- Springer Nature
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:A1997XV86200006
- Scopus ID
- 2-s2.0-0031237398
- Other Identifier
- 991019167978104721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering