[Kovove materialy - Metallic materials]
    Wed - July 15, 2020 - 06:45 No. of hits : 1157169 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 49 (2011), Issue 1

Correlation between shear punch and tensile measurements for an AZ31 Mg alloy processed by equal-channel angular pressing
vol. 49 (2011), no. 1, pp. 43 - 50

An AZ31 magnesium alloy was extruded and then processed by equal-channel angular pressing (ECAP) at 200 °C for 1, 2 and 4 passes. The grain structure was refined from 20.2 to 1.6 μm after 4 passes. The shear punch testing (SPT) technique and uniaxial tensile tests were employed to evaluate the mechanical properties of the extruded and ECAP samples. The 4 pass ECAP alloy showed lower yield stress and higher ductility compared to the as-extruded condition, indicating that texture softening overcame the strengthening effects of grain refinement. The same trends in strength and ductility were also observed in shear punch testing. Three different linear correlations between the shear data and tensile data were established for ductility, yield stress, and ultimate strength. It is shown that SPT is a useful method for evaluating the mechanical properties of small quantities of fine-grained materials processed by ECAP.

Key words
Equal-channel angular pressing (ECAP), magnesium alloy, shear punch test, tensile testing, texture

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

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