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Microstructure and Hardness Evolution in Magnesium Processed by HPT
Microstructure and Hardness Evolution in Magnesium Processed by HPT
- Source :
- Materials Research, Vol 20, Iss suppl 1, Pp 2-7 (2017), Materials Research v.20 suppl.1 2017, Materials research (São Carlos. Online), Universidade Federal de São Carlos (UFSCAR), instacron:ABM ABC ABPOL, Materials Research, Volume: 20 Supplement 1, Pages: 2-7, Published: 12 SEP 2017, Materials Research, Issue: ahead, Published: 12 SEP 2017
- Publication Year :
- 2017
- Publisher :
- Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol), 2017.
-
Abstract
- High pressure torsion provides an opportunity to process materials with low formability such as magnesium at room temperature. The present work shows the microstructure evolution in commercially pure magnesium processed using a pressure of 6.0 GPa up to 10 turns of rotation. The microstructure evolution is evaluated using electron microscopy and the hardness is determined using dynamic hardness testing. The results show that the grain refinement mechanism in this material differs from materials with b.c.c. and f.c.c. structures. The mechanism of grain refinement observed at high temperatures also applies at room temperature. The hardness distribution is heterogeneous along the longitudinal section of the discs and is not affected by the amount of deformation imposed to the material.
- Subjects :
- Work (thermodynamics)
Materials science
EBSD
chemistry.chemical_element
02 engineering and technology
magnesium
Indentation hardness
Formability
General Materials Science
Materials of engineering and construction. Mechanics of materials
Magnesium
020502 materials
Mechanical Engineering
Metallurgy
Torsion (mechanics)
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
0205 materials engineering
chemistry
high-pressure torsion
Mechanics of Materials
TA401-492
Deformation (engineering)
0210 nano-technology
Electron backscatter diffraction
Subjects
Details
- Language :
- English
- ISSN :
- 15161439
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- Materials Research
- Accession number :
- edsair.doi.dedup.....fa6aa31d0a7402d55b407d28844c9bf2