Strengthening and ductilizing of magnesium alloying with heavy rare earth elements

Yuanding Huang; Yulin Xu; Sihang You; Weimin Gan; Karl Ulrich Karl; Norbert Hort

doi:10.1051/matecconf/201818803021

All issues

Volume 188 (2018)

MATEC Web Conf., 188 (2018) 03021

Abstract

Open Access

Issue		MATEC Web Conf. Volume 188, 2018 5^th International Conference of Engineering Against Failure (ICEAF-V 2018)


Article Number		03021
Number of page(s)		6
Section		Metallic Materials II: Damage Accumulation, Structural Integrity, Advanced Manufacturing Techniques
DOI		https://doi.org/10.1051/matecconf/201818803021
Published online		07 August 2018

MATEC Web of Conferences 188, 03021 (2018)

Strengthening and ductilizing of magnesium alloying with heavy rare earth elements

Yuanding Huang, Yulin Xu, Sihang You, Weimin Gan, Karl Ulrich Karl and Norbert Hort

MagIC-Magnesium Innovation Centre, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, 21502 Geesthacht, Germany

Abstract

Among all alloying elements the rare earth elements (RE) play a key role in improving the ductility, high temperature strength and corrosion resistance effectively for magnesium and its alloys. The present work investigated the influences of single alloying or multi heavy REs (Gd, Dy and Y) alloying on the strengthening and ductilizing of magnesium. These heavy REs have a higher solid solubility in magnesium than that the light REs such as Nd and Ce. It is found that the solid solution strengthening caused by Gd follows the linear relationship with the exponent n value of 1/2 or 2/3. When adding two or more heavy REs in Mg, owing to their interactions and resultant synergetic effects, the effectiveness of strengthening and ductilizing caused by multiple RE addition is much better than that by single RE addition.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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