Article
Metallurgy & Metallurgical Engineering
Kai Xiang Kuah, Daniel J. Blackwood, Wee Kit Ong, Mojtaba Salehi, Hang Li Seet, Mui Ling Sharon Nai, Sudesh Wijesinghe
Summary: Binder jet printing is used to produce porous magnesium structures, but the microstructure is detrimental to corrosion performance. Impregnating the pores with hydroxyapatite or polymers greatly improves the corrosion resistance of the binder jet printing samples.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Cheng Chen, Chenrong Ling, Yinjin Shao, Youwen Yang, Dongsheng Wang, Cijun Shuai
Summary: Alloying treatment with rare earth yttrium (Y) was adopted to improve the overall performance of Mg-Zn-Zr alloy, resulting in the formation of quasicrystal I-phase. Laser-processed ZW61 parts showed reduced corrosion rate and improved strength and plasticity, making them a competitive candidate for orthopedics device application.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Physical
Liming Xu, Xingwang Liu, Kang Sun, Rao Fu, Gang Wang
Summary: Magnesium alloys possess excellent biocompatibility and biodegradability, but their corrosion resistance is relatively lower. This study reviews the corrosion mechanism of magnesium alloys and proposes reasonable methods for preventing and modeling corrosion. Additionally, composition design, structural treatment, and surface processing techniques can be used to control degradation rate and improve the biological properties of magnesium alloys.
Review
Materials Science, Multidisciplinary
M. Ahmadi, S. A. A. Bozorgnia Tabary, D. Rahmatabadi, M. S. Ebrahimi, K. Abrinia, R. Hashemi
Summary: As a lightweight material with excellent biocompatible properties, magnesium has gained increasing attention in recent years. The production of magnesium faces challenges such as low ductility at ambient temperature and high oxidation and flammability at high operating temperatures. Selective Laser Melting (SLM) is considered a reliable method for manufacturing magnesium-based products, offering advantages such as complex geometry design and minimal waste. This paper summarizes the SLM parameters, properties, defects, and applications of magnesium alloys, and discusses the challenges and solutions associated with this method.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Metallurgy & Metallurgical Engineering
Farzad Badkoobeh, Hossein Mostaan, Mahdi Rafiei, Hamid Reza Bakhsheshi-Rad, Seeram RamaKrishna, Xiongbiao Chen
Summary: Magnesium-based materials have the unique ability to biodegrade within the human/animal body, making them suitable for fabricating surgical bioimplants. Additive manufacturing (AM) and three-dimensional (3D) printing are promising techniques for bioimplant design and manufacturing, despite challenges related to the properties of magnesium-based alloys. This review article critically examines various AM processes, mechanical and biocompatible properties, as well as the challenges and possibilities of magnesium-based implants.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Sergio Gonzaga, Arturo Molina, Rene Guardian, Horacio Martinez, Edna Vazquez Velez, Jesus Santa-Olalla Tapia
Summary: Ternary Mg-Zn-Ca alloys were manufactured using mechanical alloying for potential biomedical applications. The effect of milling time, degradation in synthetic human fluids, and cytotoxicity were studied. The alloys showed improved corrosion resistance compared to pure Mg and exhibited no cytotoxicity towards human fibroblast cells. Mg65-Zn30-Ca5 and Mg70-Zn25-Ca5 alloys have good potential for biomedical applications.
Review
Engineering, Biomedical
Yan Zhou, Jingwen Wang, Youwen Yang, Mingli Yang, Haizhong Zheng, Deqiao Xie, Dongsheng Wang, Lida Shen
Summary: This study reviews the current research status and future research trends for laser powder bed fusion (LPBF) of biodegradable zinc-based implants. LPBF offers advantages in fabricating personalized medical devices, but the evaporation and element loss during laser processing pose challenges to the formation quality and performance of zinc-based materials. The influences of powder characteristics and process parameters on formation quality are systematically described, and the microstructure evolution, mechanical properties, and degradation behavior are discussed. The research perspectives for LPBF of zinc aim to provide guidelines for future studies.
INTERNATIONAL JOURNAL OF BIOPRINTING
(2022)
Article
Materials Science, Multidisciplinary
Y. Chew, Z. G. Zhu, F. Weng, S. B. Gao, F. L. Ng, B. Y. Lee, G. J. Bi
Summary: In this study, bulk Fe49.5Mn30Co10Cr10C0.5 interstitial multicomponent alloy was fabricated using laser aided additive manufacturing, showing excellent mechanical properties and cellular structures. Tensile tests demonstrated superior strength of the alloy at low temperatures, with almost no twinning observed in fractured samples.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Computer Science, Artificial Intelligence
Hong Seok Park, Dinh Son Nguyen, Thai Le-Hong, Xuan Van Tran
Summary: A neural network-based optimization method was developed to improve the quality of Ti-6Al-4V SLM-fabricated parts and help manufacturing engineers choose optimal process parameters. The model's performance was proven with a value of R-2 of 99% for both density ratio and surface roughness, leading to nearly identical part qualities with only about 0.9-4.4% errors at the maximum.
JOURNAL OF INTELLIGENT MANUFACTURING
(2022)
Review
Engineering, Biomedical
Weijie Weng, Arne Biesiekierski, Yuncang Li, Matthew Dargusch, Cuie Wen
Summary: The study focuses on the biological impact and application of rare-earth elements (REEs) in biodegradable Mg-based biomaterials. Despite the effectiveness of REEs in improving corrosion, mechanical, and manufacturability properties of Mg alloys, their physiological effects are still poorly understood. The review provides guidance for the development of new biomedical alloys and emphasizes areas of concern and unclear knowledge. Key findings include current clinical and preclinical work summary, highlighting Sc as the most promising REE in terms of physiological impact, while caution is advised when considering other REEs as alloying elements.
ACTA BIOMATERIALIA
(2021)
Article
Chemistry, Physical
Wei Lu, Yinling Zhang, Taolei Wang
Summary: This paper investigates the merging mechanism of Mg-Zn and HA particles in Mg-Zn/HA composites prepared using powder metallurgy. The distribution of HA in the matrix is examined using SEM and micro-CT images, and the mechanical properties and biocompatibility of the composites are discussed in detail. The results highlight the importance of optimizing the HA content in Mg-Zn/HA composites for bone implants, with composites containing a moderate HA content showing the most promising characteristics.
Review
Chemistry, Physical
Lai-Chang Zhang, Liang-Yu Chen, Shengfeng Zhou, Zhen Luo
Summary: Due to their high mechanical properties, good corrosion resistance, and excellent biocompatibility, beta-type Ti alloys are widely used as biomedical implants. Rapidly developed powder bed fusion (PBF) technologies have become new methods for fabricating these alloys. This review article summarizes recent advances and perspectives on various aspects of PBF-produced beta-type Ti alloys, including feedstock powder characteristics, microstructure, mechanical properties, and corrosion behavior. The results show that PBF-produced bulk beta-type Ti alloys exhibit higher strength and slightly reduced deformation strain compared to conventional counterparts. The corrosion behavior of these alloys depends on their phase constituents in the microstructure, which are influenced by the fabrication methods. PBF-produced lattice structures of beta-type Ti alloys with lower and controllable moduli are also developed for biomedical implant applications. However, research on PBF-produced beta-type Ti alloys for biomedical implants is still in the initial stage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Di Ouyang, Pengcheng Zhang, Cheng Zhang, Ning Li, K. C. Chan, Lin Liu
Summary: A high-strength lamellar high-entropy alloy (HEA) of Zr45Ti31.5Nb13.5Al10 with excellent ductility was fabricated by in-situ alloying of blended elemental powders via laser directed energy deposition (DED). Microstructure characterizations suggest that the molten pools with body-centred cubic (BCC) structure and heat affected zones with mixed structure of BCC + ordered BCC (B2) nanoprecipitates, are alternately distributed in the DEDprocessed HEA with a lamellar structure. This research provides new options for the design and manufacturing of HEAs with outstanding mechanical properties for structural applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
James M. Borgman, Jing Wang, Lorenzo Zani, Paul P. Conway, Carmen Torres-Sanchez
Summary: In this study, Ti-(0-30 wt.%)Nb alloys were fabricated using Selective Laser Melting process. The energy density affected the compositional homogeneity, microstructure, and mechanical properties of the alloys. Increasing Nb content led to the stabilization of alpha and beta phases, while in-situ alloying promoted solid solution strengthening and homogenization.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Nanoscience & Nanotechnology
J. F. Qi, C. Y. Liu, Z. W. Chen, Z. Y. Liu, J. S. Tian, J. Feng, I. V. Okulov, J. Eckert, P. Wang
Summary: By adding Ti nanoparticles and using SLM processing, an Al-12Si-Ti alloy was synthesized with improved thermal stability and yield strength at mid-temperatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)