Cryorolling-Induced Texture, Mechanical Properties and Fracture Behavior of Al-Mg-Si Alloys During Cold Deformation

Journal Article · Wed Aug 15 04:00:00 EDT 2018 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-018-3486-4· OSTI ID:22860341

Ren, Xianwei; Huang, Yuanchun; Liu, Yu ^[1]

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1. Central South University, Research Institute of Light Alloy (China)

This study investigated the texture, mechanical properties, and fracture behavior during cold working of cryorolled (CR) Al-Mg-Si alloys. An x-ray texture goniometer was used to examine the crystallographic texture, and tensile tests were performed to understand the deformation behavior in more detail. SEM/EBSD/TEM was used to observe the microstructures and fracture morphology of the alloy during cryorolling. The microstructures indicated that a large number of ultrafine grains and dislocations formed after cryorolled. The recrystallization was prohibited due to low temperature during deformation. The ultrafine grains and dislocation strength improved the tensile strength from 279.38 MPa for the room-rolled alloy to 313.98 MPa for the cryorolled alloy; better plasticity (4.6%) was observed in the CR sheet. Ductile and intergranular fractures were observed in the CR sheet deformation from 20 to 90%.

• OSTI ID: 22860341
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 8 Vol. 27; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
BACKSCATTERING
COLD WORKING
CRYSTALLOGRAPHY
DEFORMATION
DISLOCATIONS
ELECTRON DIFFRACTION
FRACTURES
GONIOMETERS
MAGNESIUM COMPOUNDS
MICROSTRUCTURE
PLASTICITY
RECRYSTALLIZATION
SCANNING ELECTRON MICROSCOPY
SILICON COMPLEXES
TEMPERATURE RANGE 0065-0273 K
TENSILE PROPERTIES
TRANSMISSION ELECTRON MICROSCOPY
X RADIATION