Development of internal strains during compression of Al-Si alloy Al-7Si-0.4Mg


This proposal follows on from our successful experiment on ENGIN-X lin 2006, where we measured the development of strains in the aluminium and silicon phases of a common casting alloy, Al-7Si-0.4Mg. The experiment allowed us to evaluate the load transfer from the aluminium to the silicon, and to evaluate the strength of the silicon particles.However, data analysis is complicated because the particles fracture progressively during a tension test so the diffraction peaks contain data from both broken and intact particles. The proposed experiment will refine our estimates of the fracture strengths of the Si particles.We will identify the three elements of the particle stress due to mismatches between Si and Al of the thermal expansion coefficients, elastic moduli and plastic flow behaviour and, crucially, of the relaxation of the thermal stress as the Al yields.

Metadata Access
Creator Dr Trevor Finlayson; Professor Michael Fitzpatrick; Dr Edward Oliver; Dr John Griffiths
Publisher ISIS Neutron and Muon Source
Publication Year 2011
Rights CC-BY Attribution 4.0 International;
OpenAccess true
Contact isisdata(at)
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2008-04-21T10:35:57Z
Temporal Coverage End 2008-04-24T11:22:21Z