Microstructure and mechanical properties of mg-gd alloys as biodegradable implant materials

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

Authors

  • Yiyi Lu
  • Yuanding Huang
  • Frank Feyerabend
  • Regine Willumeit-Römer
  • Karl Urich Kainer
  • Norbert Hort

Mg alloys attract more and more attentions for biomedical applications. Mg-Gd alloys were designed as biodegradable implant materials which combine favorable mechanical and corrosion properties. In this work, the microstructure and mechanical properties of binary Mg-2Gd, ternary Mg-2Gd-(Ag, Ca) and quaternary Mg-2Gd-2Ag-0.4Ca alloys were investigated. The alloys were prepared by permanent mould casting. The results show that the additions of Ag and Ca had significant influences on the microstructure and mechanical properties of Mg-2Gd alloy. Ag and Ca additions affect the formation of second phases. A quaternary Mg-Gd-Ag-Ca second phase was found in the quaternary alloy. Both the hardness and tensile yield strength were improved by adding Ag and Ca to 2 wt% Gd-containing alloys due to grain refinement and formation of different intermetallic phases (IMPs). Furthermore, the addition of Ag and Ca can apparently enhance the age hardening of Mg-2Gd alloy.

Original languageEnglish
Title of host publicationTMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings
Number of pages10
Place of PublicationCham
PublisherSpringer International Publishing AG
Publication date2018
Pages253-262
ISBN (print)978-3-319-72525-3, 978-3-319-89187-3
ISBN (electronic)978-3-319-72526-0
DOIs
Publication statusPublished - 2018
Externally publishedYes
Event147th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2018 - Phoenix, United States
Duration: 11.03.201815.03.2018
Conference number: 147
https://www.tms.org/tms2018

    Research areas

  • Ageing treatment (T6), Mg-2Gd-Ag-Ca alloys, Microstructure Mechanical properties
  • Engineering