|Title:||Effect of annealing on structure and mechanical behavior of an AA2139 alloy|
high temperature deformation
|Citation:||Effect of annealing on structure and mechanical behavior of an AA2139 alloy / D. Tagirov [и др.] // Materials Science Forum. - 2014. - Vol.783-786.-P. 258-263.|
|Abstract:||An AA2139 alloy with a chemical composition of Al-4.35Cu-0.46%Mg-0.63Ag-0.36Mn-0.12Ti (in wt.%) and an initial grain size of about 155 μm was subjected to annealing at 430°C for 3 h followed by furnace cooling. This treatment resulted in the formation of a dispersion of coarse particles having essentially plate-like shape. The over-aged alloy exhibits lower flow stress and high ductility in comparison with initial material in the temperature interval 20-450°C. Examination of microstructural evolution during high-temperature deformation showed localization of plastic flow in vicinity of coarse particles. Over-aging leads to transition from ductile-brittle fracture to ductile and very homogeneous ductile fracture at room temperature|
|Appears in Collections:||Статьи из периодических изданий и сборников (на иностранных языках) = Articles from periodicals and collections (in foreign languages)|
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