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Influence of large cold strain on the microstructural evolution for a magnesium alloy subjected to multi-pass cold drawing
- Source :
- Materials Science and Engineering: A. 623:92-96
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- Cold-drawn AZ31 Mg alloy wires with a wide range of strains up to ~1.2 were prepared by multi-pass cold drawing to investigate the influence of cold strain on microstructural evolution. With the drawing, plastic deformation was initially dominated by twinning, particularly {10–10} twinning, but gradually becoming by slips especially after twinning was exhausted at large strains>1. More importantly, pronounced refined crystallites with diameter ~100 nm were achieved through profuse intersections across twin bundles starting from strains larger than ~0.6, and contributed to the weakening of {0002} fiber texture. This refinement could be interpreted as twin fragmentation related to dynamic recovery; and to some extent it implied a possibility of fabrication of ultrafine-grained structure by cold severe plastic deformation for magnesium alloys.
- Subjects :
- Fabrication
Materials science
Magnesium
Mechanical Engineering
Metallurgy
Alloy
chemistry.chemical_element
engineering.material
Condensed Matter Physics
Microstructure
chemistry
Mechanics of Materials
engineering
General Materials Science
Crystallite
Magnesium alloy
Severe plastic deformation
Crystal twinning
Subjects
Details
- ISSN :
- 09215093
- Volume :
- 623
- Database :
- OpenAIRE
- Journal :
- Materials Science and Engineering: A
- Accession number :
- edsair.doi...........5b77c9c54a49299a6a40cdb226e32acc