Paper Title:

A Ductile UFG Al Alloy via Cryomilling and Quasi-Isostatic Forging

Periodical Advanced Materials Research (Volumes 29 - 30)
Main Theme Advanced Materials and Processing IV
Edited by Deliang Zhang, Kim Pickering, Brian Gabbitas, Peng Cao, Alan Langdon, Rob Torrens and Johan Verbeek
Pages 21-29
DOI 10.4028/www.scientific.net/AMR.29-30.21
Citation A.P. Newbery et al., 2007, Advanced Materials Research, 29-30, 21
Online since November, 2007
Authors A.P. Newbery, Byung Ahn, P. Pao, S.R. Nutt, Enrique J. Lavernia
Keywords Cryogenic Ball Milling, Fracture Toughness, High-Strength, HIP Consolidation, Nanocrystalline Powder
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Abstract

Mechanical milling of Al alloy powder in liquid nitrogen leads to a large reduction in the scale of the microstructure and results in material with high thermal stability and strength. However, it is important to consolidate the powder and achieve bulk material with sufficient toughness and ductility for structural applications. In this investigation, hot isostatic pressing, followed by quasiisostatic forging and hot rolling, were performed to fabricate Al 5083 plate with a predominantly ultra-fine grained microstructure. Plate produced in this way possessed enhanced tensile strength and ductility, exceeding that of conventionally processed material.