Nanostructure and related mechanical properties of an Al-Mg-Si alloy processed by severe plastic deformation

Details Nanostructure and related mechanical properties of an Al-Mg-Si alloy processed by severe plastic deformation Nanostructure and related mechanical properties of an Al-Mg-Si alloy processed by severe plastic deformation

2008-08-27

arxiv.org/abs/0808.3715v1

Philosophical Magazine Letters 88, 6 (2008) 459

Physics

Condensed Matter

Materials Science

Scientific paper

10.1080/09500830802186938

Microstructural features and mechanical properties of an Al-Mg-Si alloy processed by high-pressure torsion have been investigated using transmission electron microscopy, X-ray diffraction, three-dimensional atom probe, tensile tests and microhardness measurements. It is shown that HPT processing of the Al-Mg-Si alloy leads to a much stronger grain size refinement than of pure aluminium (down to 100 nm). Moreover, massive segregation of alloying elements along grain boundaries is observed. This nanostructure exhibits a yield stress even two times higher than that after a standard T6 heat treatment of the coarse grained alloy

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