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Analysis of the Multi-Directional Forging of Aluminium Alloy 7075 Process Parameters: Numerical and Experimental Analysis

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Abstract:

In this study, a multi-directional forging process was conducted on AA 7075. Analysis of the evolution of the mechanical properties (tensile and hardness) and the microstructure was done. The effects of the process parameters (temperatures, die speed, and strain per pass) on the process outputs were investigated. The hardness of the MDF processed samples was determined using Brinell hardness tester, the tensile tests were conducted on a universal tensile machine (GT-7001-LS50), while the grains were observed using the Zeiss Axio Zoom V16 microscope and Tescan VEGA3 scanning electron microscope. It was observed that the MDF process leads to grain refinement with increase temperature and strain per pass. However, large strains per pass caused damages to the samples. The hardness and the tensile strength were seen to generally improve with an increase in strain per pass.

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Periodical:

Key Engineering Materials (Volume 924)

Pages:

61-72

DOI:

https://doi.org/10.4028/p-m5syi0

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Online since:

June 2022

Authors:

Cleophas Obara, Fredrick M. Mwema*, Tien Chien Jen

Keywords:

Ductility, Hardness, Microstructure, Multi-Directional Forging, Strength

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