Effect of Annealing on Structure and Mechanical Behavior of an AA2139 Alloy
2014 ◽
Vol 783-786
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pp. 258-263
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Keyword(s):
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.
2007 ◽
Vol 561-565
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pp. 155-158
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2018 ◽
Vol 47
(6)
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pp. 1716-1722
Keyword(s):
2010 ◽
Vol 654-656
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pp. 1598-1601
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2005 ◽
Vol 495-497
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pp. 1049-1054
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2007 ◽
Vol 558-559
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pp. 517-522
2013 ◽
Vol 29
(2)
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pp. 197-203
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1988 ◽
Vol 7
(9)
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pp. 987-988
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Keyword(s):