TY - CHAP

T1 - Microstructure and mechanical properties of mg-gd alloys as biodegradable implant materials

AU - Lu, Yiyi

AU - Huang, Yuanding

AU - Feyerabend, Frank

AU - Willumeit-Römer, Regine

AU - Kainer, Karl Urich

AU - Hort, Norbert

N1 - Conference code: 147

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

KW - Ageing treatment (T6)

KW - Mg-2Gd-Ag-Ca alloys

KW - Microstructure Mechanical properties

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85044470084&partnerID=8YFLogxK

U2 - 10.1007/978-3-319-72526-0_23

DO - 10.1007/978-3-319-72526-0_23

M3 - Article in conference proceedings

AN - SCOPUS:85044470084

SN - 978-3-319-72525-3

SN - 978-3-319-89187-3

T3 - Minerals, Metals and Materials Series

SP - 253

EP - 262

BT - TMS 2018 147th Annual Meeting and Exhibition Supplemental Proceedings

PB - Springer International Publishing AG

CY - Cham

T2 - 147th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2018

Y2 - 11 March 2018 through 15 March 2018

ER -