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The effects of rolling parameters on the mechanical behavior of 6061 aluminum alloy

journal contribution
posted on 2013-08-20, 00:00 authored by F Rajabi, A Zarei-Hanzaki, M Eskandari, Shahin Khoddam
The present work has been conducted to study the effect of rolling parameters (strain rate and temperature) on the microstructural evolutions and mechanical properties of 6061 aluminum alloy. The results indicate that the predominant restoration process during rolling at 250°C is dynamic recovery, and the driving force is not high enough to trigger dynamic recrystallization. However, primary recrystallized grains were clearly evident in the microstructure of the specimen rolled at 350°C. Moreover, at 450°C not only the volume fraction of dynamically recrystallized grains is increased but the formation of some new precipitates is recognized. The tensile test results show that the room temperature strength and ductility are increased by increasing the rolling temperature in the range of 250-450°C. Moreover, at a given rolling temperature the yield strength is decreased with increasing strain rate. The observed trends are explained through microstructural evolutions upon hot rolling as well as dynamic precipitation of Mg 2 Si and the Fe or Cu rich particles.

History

Journal

Materials science and engineering A

Volume

578

Pagination

90 - 95

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0921-5093

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2013, Elsevier