Triaxial compression on semi-solid alloys
File(s)
Published version
Author(s)
Altuhafi, Fatin N
O'Sullivan, Catherine
Sammonds, Peter
Su, Te-Cheng
Gourlay, Christopher
Type
Journal Article
Abstract
Multi-axial compression of the mushy zone occurs in various pressurized casting processes. Here, we present a drained triaxial compression apparatus for semi-solid alloys that allow liquid to be drawn into or expelled from the sample in response to isotropic or triaxial compression. The rig is used to measure the pressure-dependent flow stress and volumetric response during isothermal triaxial compression of globular semi-solid Al-15 wt pct Cu at 70 to 85 vol pct solid. Analysis of the stress paths and the stress–volume data show that the combination of the solid fraction and mean effective pressure determines whether the material undergoes shear-induced dilation or contraction. The results are compared with the critical state soil mechanics (CSSM) framework and the similarities and differences in behavior between equiaxed semi-solid alloys and soils are discussed.
Date Issued
2021-05-01
Date Acceptance
2021-02-19
Citation
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 2021, 52, pp.2010-2023
ISSN
1073-5623
Publisher
Springer
Start Page
2010
End Page
2023
Journal / Book Title
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume
52
Copyright Statement
©2021 The Authors. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/K026763/1
Subjects
Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
Materials
0306 Physical Chemistry (incl. Structural)
0912 Materials Engineering
0913 Mechanical Engineering
Publication Status
Published
Date Publish Online
2021-03-21