Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/217942

Title

Validation of predicted residual stresses within direct chill cast magnesium alloy slab

Author(s)

Turski, Mark;  Paradowska, Anna;  Zhang, Shu-Yan;  Mortensen, Dag;  Fjaer, Hallvard;  Grandfield, John;  Davis, Bruce;  DeLorme, Rick

Abstract

A significant level of cold cracking has been observed within direct chill (DC) cast, high-strength magnesium alloy Elektron WE43. These cracks have been attributed to the formation of significant residual stresses during casting. A finite-element modeling (FEM) code, which is called ALSIM, has been used to predict the residual stress within the DC-cast slab. Verification of the predicted residual stress field within an 870 x 315-mm sized slab has been carried out using neutron diffraction measurements. Given that measurements in such large-scale components using diffraction measurements are particularly challenging and expensive, the efficient use of neutron diffraction measurements is emphasized. This has included the use of sectioning, allowing the residual stress within the slab to be mapped in detail.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences

Source

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 43, no. 5 (May 2012), pp. 1547-1557

Publication year

2012

FOR Code(s)

0306 Physical Chemistry (Incl. Structural);  0912 Materials Engineering;  0913 Mechanical Engineering

Keyword(s)

Cold cracking;  Direct chill casting;  Magnesium alloy slab;  Residual stresses

Publisher

Springer

ISSN

1073-5623

Publisher URL

http://dx.doi.org/10.1007/s11661-011-1077-1

Copyright

Copyright © 2012 The Minerals, Metals & Materials Society and ASM International.

Peer reviewed