The Effects of Rapid Solidification on the Microstructure and Mechanical Properties of Al5083

Salehi, Maryam; Dadashi, Milad; Kashani Sani, S. Parsa

doi:10.22068/ijmse.3178

Volume 20, Issue 2 (June 2023) IJMSE 2023, 20(2): 1-7 | Back to browse issues page

‎ 10.22068/ijmse.3178

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Salehi M, Dadashi M, Kashani Sani S P. The Effects of Rapid Solidification on the Microstructure and Mechanical Properties of Al5083. IJMSE 2023; 20 (2) :1-7
URL: http://ijmse.iust.ac.ir/article-1-3178-en.html

The Effects of Rapid Solidification on the Microstructure and Mechanical Properties of Al5083

Maryam Salehi

, Milad Dadashi

, S. Parsa Kashani Sani

Abstract: (8531 Views)

In the present study, bulk refined-structured Al 5083 alloy with high mechanical properties was successfully fabricated by hot consolidation process of nanostructured melt- spun flakes. The influence of cooling rate and pressing conditions on the microstructure and mechanical properties of the alloy were investigated using X-ray diffractometer (XRD), optical microscopy (OM), field emission scanning electron microscopy (FE-SEM), microhardness, and compression tests. Rapid solidification combined with the hot consolidation at T=753 K (480 °C) and P= 800 MPa for 20 min produced a bulk sample with the desirable bonding, good microhardness (184.2±12.4 HV), and high strength (273±8 MPa) combined with 7 pct. fracture strain. These amounts are 78.6±5.1 HV, 148 ±9 MPa and about 5 pct. for the as-cast sample. Microstructural refinement during the controlled consolidation of nanostructure rapidly- solidified flakes contributes to such high mechanical properties of the bulk sample.

Keywords: rapid solidification, aluminum alloy 5083, mechanical properties, microstructure, hot consolidation