Experimental investigation of anisotropy evolution of AZ31 magnesium alloy sheets under tensile loading

Journal Article · Wed May 04 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3589737· OSTI ID:21516731

Tari, D Ghaffari; Worswick, M J ^[1]

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1. University of Waterloo, 200 University Ave West, Waterloo, Ontario (Canada)

Increasing demand for lighter final products has created new opportunities for the application of new light weight materials. Due to high strength to density ratio and good magnetic resistance properties, magnesium alloys are good candidates to replace steel and aluminum for same application. However, limited numbers of active slip deformation mechanisms, result in a decreased formability at room temperature. Furthermore, wrought magnesium alloys have an initial crystallographic texture, remained from the prior rolling operations, which makes them highly anisotropic. In this paper, tensile tests are performed at room temperature and 200 deg. C at different strain rates and orientations relative to the rolling direction, including rolling, 30 deg., 45 deg., 60 deg. and transverse orientation. The strain rates adopted for these experiments varied from 0.001 to 1.0. The testing results show the effect of temperature on the strain rate sensitivity of AZ31 sheets. The extent of deformation is continuously recorded using two separate high temperature extensometers. The results of testing show an increase in the r-values with the plastic deformation. The strain rate sensitivity of AZ31 increased as the temperature was elevated. At higher strain rates the measured r-values are larger and the slope of its evolution with the plastic strain is steeper.

• OSTI ID: 21516731
• Journal Information: AIP Conference Proceedings, Vol. 1353, Issue 1; Conference: ESAFORM 2011: 14. international ESAFORM conference on material forming, Belfast, Northern Ireland (United Kingdom), 27-29 Apr 2011; Other Information: DOI: 10.1063/1.3589737; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM ALLOYS
ANISOTROPY
CRYSTALLOGRAPHY
DEFORMATION
DENSITY
EVOLUTION
EXTENSOMETERS
MAGNESIUM ALLOY-AZ31B
MAGNESIUM ALLOYS
ORIENTATION
PLASTICITY
ROLLING
SHEETS
STEELS
STRAIN RATE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TEXTURE
ALLOYS
CARBON ADDITIONS
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
MAGNESIUM BASE ALLOYS
MANGANESE ADDITIONS
MANGANESE ALLOYS
MATERIALS WORKING
MECHANICAL PROPERTIES
PHYSICAL PROPERTIES
TEMPERATURE RANGE
TRANSITION ELEMENT ALLOYS
ZINC ALLOYS