[Kovove materialy - Metallic materials]
    Fri - April 12, 2024 - 23:16 No. of hits : 1740513 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 61 (2023), Issue 6

Hot deformation behavior, processing map, and microstructural evolution of Mg-Zn-Zr magnesium alloy
vol. 61 (2023), no. 6, pp. 359 - 367
DOI: 10.31577/km.2023.6.359

The hot compression in the deformation temperature range of 523-673 K and strain rates of 0.001-1 s-1 was aimed to study the hot deformation behavior, processing map, and dynamic recrystallization (DRX) to confirm an optimum hot working condition of Mg-Zn-Zr alloy. The strain-stress results by using the Gleeble-1500 simulator indicated that the flow stress decreases with increasing temperature or decreasing of strain rates, and the Medium Gaussian Kernel (correlation coefficient (R) = 0.9806, absolute relative error (AARE) = 3.28 %) has better predicting capacity. Based on the processing map and constitutive equation, the optimum hot-working condition for Mg alloys can be determined to be at hot compression temperature and strain rates in the range of 593-623 K and 0.01-0.001 s-1 with a peak value of power dissipation efficiency (PDE) which is reaching to 37 %.

Key words
Mg-Zn-Zr, hot deformation, processing map, dynamic recrystallization

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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.

Article abstracts updated: 2023-10-26 07:45      
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