The Effect of 60% Cold Rolling on the Microstructure and Mechanical Properties of the High Entropy Alloy AlCoCrFeNi2.1

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Chehri A.; Adelkhani A.; Seifpour Bijnavand M.

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF MATERIALS FORMING Year:2024 | Volume:11 | Issue:1 Page(s): 16-23

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Title

The Effect of 60% Cold Rolling on the Microstructure and Mechanical Properties of the High Entropy Alloy AlCoCrFeNi2.1

Author(s)

Chehri A. | Adelkhani A. | Seifpour Bijnavand M. | Issue Writer Certificate

Keywords

High entropy alloys

eutectic high entropy alloy

hardness

shear-punch test (SPT)

Abstract

High entropy alloys are a new class of materials that have attracted much attention due to their attractive properties. High entropy alloys have various types and structures, among which, eutectic High entropy alloys have received much attention due to their unique characteristics. In this study, the effect of 60% cold rolling on the properties of AlCoCrFeNi2.1 eutectic high entropy alloy is investigated and compared with the casting condition. This alloy shows a layered structure consisting of FCC and BCC phases in both as-cast and cold-alloyed samples. In the as-cast state, the alloy showed a hardness of 352 Vickers, which increased to 401 Vickers following a 60% cold rolling. To further investigate the mechanical properties, both samples were subjected to a shear-punch test (SPT). According to the results, the as-cast sample shows good flexibility and strength which has subsequently risen following cold rolling. The measured values of the yield shear strength and final shear strength for as cast and 60% cold-rolled samples are 204, 269, 294, and 317, respectively.

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