science-review.ru
Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440
ISSN 2500-0799
ПИ №ФС77-57440
EFFECT OF PLASTIC DEFORMATION ON MECHANICAL PROPERTIES OF AN AL-CU-MG-AG ALLOY
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The effect of degree of deformation before aging on the mechanical properties of an Al-4.35 Cu-0.46 Mg-0.63Ag-0.36Mn-0.12Ti (% by weight) alloy at 20°C and 165°C was examined. Initially, ingots were subjected casting, homogenization annealing and tradition T6 treatment – quenching and artificial aging for achieve the maximum strength. The ingots after casting and annealing were subjected to rolling and artificial aging. This material will denote as deformed alloy. Step rolling was combined hot rolling, quenching and cold rolling in a range of deformation of 5-20%. In the paper has also been analyzed the conditions of aging for both states of the alloy. It is shown that the plastic deformation increases the microhardness of the alloy to achieve the highest peak shifting to a lower hardness with aging exposure. Furthermore, prior deformation before aging significantly improves the strength characteristics of the alloy in tension at both room and elevated temperatures. The influence of the degree of cold rolling before aging on the mechanical properties of the alloy in the temperature range is investigated.