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Effect of Zn addition on dynamic recrystallization behavior of Mg-2Gd alloy during high-temperature deformation
Univ Tehran, Coll Engn, Sch Met & Mat Engn, Tehran, Iran..
Univ Tehran, Coll Engn, Sch Met & Mat Engn, Tehran, Iran..
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0003-4351-3132
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0003-1102-4342
2019 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 806, p. 1200-1206Article in journal (Refereed) Published
Abstract [en]

The effect of Zn/Gd ratio on dynamic recrystallization (DRX) of Mg-2Gd-xZn (x = 0, 1, 2 and 3 wt%) alloys was investigated by shear punch tests in the temperature range of 623-723 K and shear strain rate range of 1.0 x 10(-2)-1.2 x 10(-1) s(-1). It was observed that at low Zn/Gd ratio, excessive co-segregation of Gd and Zn solute atoms retards recrystallization and provides higher strength. At high Zn/Gd ratios, precipitation reduces the co-segregation, so that the alloy with Zn/Gd = 1.5, experienced the fastest DRX and the lowest strength. In addition, segregation resulted in a weaker texture, by elimination of nucleation and growth of the preferred orientations. rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA , 2019. Vol. 806, p. 1200-1206
Keywords [en]
Magnesium alloys, Grain boundary segregation, Dynamic recrystallization, Shear punch test
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-260991DOI: 10.1016/j.jallcom.2019.07.347ISI: 000485039800136OAI: oai:DiVA.org:kth-260991DiVA, id: diva2:1359767
Note

QC 20191010

Available from: 2019-10-10 Created: 2019-10-10 Last updated: 2019-10-10Bibliographically approved

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Babu, PrasathHedström, Peter

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