Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications

Abstract Lightweight, recyclable, and plentiful Mg alloys are receiving increased attention due to an exceptional combination of strength and ductility not possible from pure Mg. Yet, due to their alloying elements, such as rare-earths or aluminum, they are either not economical or biocompatible. He...

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Autores principales:	Md Ershadul Alam, Soupitak Pal, Ray Decker, Nicholas C. Ferreri, Marko Knezevic, Irene. J. Beyerlein
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e0ef9ec95ffc41eea4c3b570db365e62
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spelling	oai:doaj.org-article:e0ef9ec95ffc41eea4c3b570db365e622021-12-02T18:51:14ZRare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications10.1038/s41598-020-72374-z2045-2322https://doaj.org/article/e0ef9ec95ffc41eea4c3b570db365e622020-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-72374-zhttps://doaj.org/toc/2045-2322Abstract Lightweight, recyclable, and plentiful Mg alloys are receiving increased attention due to an exceptional combination of strength and ductility not possible from pure Mg. Yet, due to their alloying elements, such as rare-earths or aluminum, they are either not economical or biocompatible. Here we present a new rare-earth and aluminum-free magnesium-based alloy, with trace amounts of Zn, Ca, and Mn (≈ 2% by wt.). We show that the dilute alloy exhibits outstanding high strength and high ductility compared to other dilute Mg alloys. By direct comparison with annealed material of the same chemistry and using transmission electron microscopy (TEM), high-resolution TEM (HR-TEM) and atom probe tomography analyses, we show that the high strength can be attributed to a number of very fine, Zn/Ca-containing nanoscale precipitates, along with ultra-fine grains. These findings show that forming a hierarchy of nanometer precipitates from just miniscule amounts of solute can invoke simultaneous high strength and ductility, producing an affordable, biocompatible Mg alloy.Md Ershadul AlamSoupitak PalRay DeckerNicholas C. FerreriMarko KnezevicIrene. J. BeyerleinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-15 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Md Ershadul Alam Soupitak Pal Ray Decker Nicholas C. Ferreri Marko Knezevic Irene. J. Beyerlein Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications
description	Abstract Lightweight, recyclable, and plentiful Mg alloys are receiving increased attention due to an exceptional combination of strength and ductility not possible from pure Mg. Yet, due to their alloying elements, such as rare-earths or aluminum, they are either not economical or biocompatible. Here we present a new rare-earth and aluminum-free magnesium-based alloy, with trace amounts of Zn, Ca, and Mn (≈ 2% by wt.). We show that the dilute alloy exhibits outstanding high strength and high ductility compared to other dilute Mg alloys. By direct comparison with annealed material of the same chemistry and using transmission electron microscopy (TEM), high-resolution TEM (HR-TEM) and atom probe tomography analyses, we show that the high strength can be attributed to a number of very fine, Zn/Ca-containing nanoscale precipitates, along with ultra-fine grains. These findings show that forming a hierarchy of nanometer precipitates from just miniscule amounts of solute can invoke simultaneous high strength and ductility, producing an affordable, biocompatible Mg alloy.
format	article
author	Md Ershadul Alam Soupitak Pal Ray Decker Nicholas C. Ferreri Marko Knezevic Irene. J. Beyerlein
author_facet	Md Ershadul Alam Soupitak Pal Ray Decker Nicholas C. Ferreri Marko Knezevic Irene. J. Beyerlein
author_sort	Md Ershadul Alam
title	Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications
title_short	Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications
title_full	Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications
title_fullStr	Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications
title_full_unstemmed	Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications
title_sort	rare-earth- and aluminum-free, high strength dilute magnesium alloy for biomedical applications
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/e0ef9ec95ffc41eea4c3b570db365e62
work_keys_str_mv	AT mdershadulalam rareearthandaluminumfreehighstrengthdilutemagnesiumalloyforbiomedicalapplications AT soupitakpal rareearthandaluminumfreehighstrengthdilutemagnesiumalloyforbiomedicalapplications AT raydecker rareearthandaluminumfreehighstrengthdilutemagnesiumalloyforbiomedicalapplications AT nicholascferreri rareearthandaluminumfreehighstrengthdilutemagnesiumalloyforbiomedicalapplications AT markoknezevic rareearthandaluminumfreehighstrengthdilutemagnesiumalloyforbiomedicalapplications AT irenejbeyerlein rareearthandaluminumfreehighstrengthdilutemagnesiumalloyforbiomedicalapplications
_version_	1718377475714580480

Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications

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