Microstructure and Mechanical Properties of Aluminum Processed by Multi-Axial Compression

Abstract:

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. In this study, commercial Al was subjected to plastic deformation by multi-axial compression. The microstructure and mechanical properties in dependence on effective strain were studied. Aluminum was processed to effective strain f = 9.6. The misorientation distribution and subgrain/grain size were analyzed by using a scanning electron microscopy (SEM) equipment with electron back scattered diffraction (EBSD) facility. The dislocation microstructure was investigated by a scanning transmission electron microscope (STEM). The mechanical properties as: yield strength (YS), ultimate tensile strength (UTS), uniform and total elongation were performed on MTS QTest/10 machine equipped with digital image correlation method (DIC). Deformation of Al by the multi-axial compression leads to grain refinement to ultra-fine grains (UFGs) and improvement in strength properties. Material exhibits the following strength parameters: UTS: 129 MPa, YS: 124 MPa after deformation at f = 9.6. These values are about two times higher compared with initial state.

Info:

Periodical:

Solid State Phenomena (Volume 176)

Edited by:

Agnieszka Botor-Probierz and Andrzej Kiełbus

Pages:

21-28

DOI:

10.4028/www.scientific.net/SSP.176.21

Citation:

K. Rodak et al., "Microstructure and Mechanical Properties of Aluminum Processed by Multi-Axial Compression", Solid State Phenomena, Vol. 176, pp. 21-28, 2011

Online since:

June 2011

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Price:

$35.00

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