Article describes how, amorphous magnesium alloy, especially Mg-Zn-Ca series, has been receiving continuous attention in biomedical field, because of its favorable corrosion resistance, suitable modulus and biocompatibility. In this work, laser powder bed fusing with unique characteristics of rapid solidification and layer-by-layer fashion was used to fabricate bulk Mg-Zn-Ca and Mg-Zn-Ca-Y amorphous parts.
The UNT College of Engineering strives to educate and train engineers and technologists who have the vision to recognize and solve the problems of society. The college comprises six degree-granting departments of instruction and research.
Article describes how, amorphous magnesium alloy, especially Mg-Zn-Ca series, has been receiving continuous attention in biomedical field, because of its favorable corrosion resistance, suitable modulus and biocompatibility. In this work, laser powder bed fusing with unique characteristics of rapid solidification and layer-by-layer fashion was used to fabricate bulk Mg-Zn-Ca and Mg-Zn-Ca-Y amorphous parts.
Physical Description
13 p.
Notes
Abstract: Amorphous magnesium (Mg) alloy, especially Mg–Zn–Ca series, has been receiving continuous attention in biomedical field, because of its favorable corrosion resistance, suitable modulus and biocompatibility. In this work, laser powder bed fusing (LPBF) with unique characteristics of rapid solidification and layer-by-layer fashion was used to fabricate bulk Mg–Zn–Ca and Mg–Zn–Ca–Y amorphous parts. It was revealed that the as-built parts contained amorphous structure, since the molten pool experienced an extremely high cooling rate that suppressed ordered arrangement of atoms. A few of nanocrystals (α-Mg and Ca2Mg5Zn13) were obtained due to repeated heat accumulation in heat-affected zones. More significantly, Y alloying altered the glass forming ability and stimulated in-situ formation of quasicrystal I-phase with high hardness and elastic modulus, which not only acted as reinforced particles, but also retarded the propagation of shear bond and thereby excited the emergence of secondary shear bands and vein patterns. Thus, Mg–Zn–Ca–Y part exhibited simultaneously improved yield strength and plasticity. Despite the micro galvanic corrosion induced by crystalline phases, it exhibited a moderate corrosion rate. Furthermore, in vitro cell tests proved its favorable biocompatibility. Our work highlighted the feasibility to prepare amorphous Mg alloy with controllable performance.
Publication Title:
Journal of Materials Research and Technology
Volume:
27
Page Start:
6961
Page End:
6973
Peer Reviewed:
Yes
Collections
This article is part of the following collection of related materials.
UNT Scholarly Works
Materials from the UNT community's research, creative, and scholarly activities and UNT's Open Access Repository. Access to some items in this collection may be restricted.
Chen, Cheng; Li, Shaoyu; Ling, Chenrong; Yang, Youwen; Gao, Chengde; Li, Yageng et al.Laser printed amorphous magnesium alloy: Microstructure, mechanical properties, and degradation behavior,
article,
November 23, 2023;
(https://digital.library.unt.edu/ark:/67531/metadc2288868/:
accessed May 1, 2024),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT College of Engineering.
