Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 610, Issue -, Pages 445-449Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2014.05.058
Keywords
Magnesium alloys; Extrusion; Dynamic recrystallization; Precipitation; Tensile properties
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Funding
- Korean Ministry of Knowledge Economy through the World Premier Materials Program [10037926]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10037928, 10037926] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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An extraordinary high strength Mg-8Al-0.5Zn alloy has been developed through extrusion at a low temperature of 200 degrees C and a slow speed of 0.07 mm/s. The as-extruded alloy exhibited a tensile yield strength of 403 MPa, an ultimate tensile strength of 437 MPa, an elongation of 10.7%, and a low tension-compression yield asymmetry of 0.97. These superior mechanical properties are attributed to the combined effect of ultra-fine recrystallized grains, numerous nano-scale Mg17Al12 precipitates, and strong basal texture. (C) 2014 Elsevier B.V. All rights reserved.
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