Title of article
The Effects of Rapid Solidification on the Microstructure and Mechanical Properties of Al5083
Author/Authors
Salehi ، Maryam School of Metallurgy and Materials Engineering - Iran University of Science and Technology (IUST) , Dadashi ، Milad School of Metallurgy and Materials Engineering - Iran University of Science and Technology (IUST) , Kashani Sani ، Parsa School of Metallurgy and Materials Engineering - Iran University of Science and Technology (IUST)
From page
100
To page
106
Abstract
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
Journal title
Iranian Journal of Materials Science and Engineering
Journal title
Iranian Journal of Materials Science and Engineering
Record number
2751697
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