Bulk metallic glasses based on precious metals: Thermal treatments and mechanical properties

Cardinal, S.; Qiao, J.C.; Pelletier, Jean-Marc; Kato, Hidemi

doi:10.1016/j.intermet.2015.04.003

Cited by 15 publications

(3 citation statements)

References 56 publications

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“…Usually, the mechan performances of precious BMGs are higher than the performances of their crystalline a counterparts. Therefore, it makes sense to design and develop precious BMGs to mee needs of the watch and jewelry industry [74,75]. So far, BMGs based on various prec metals have been developed, like Pd-based [76], Pt-based [77], and Ag-based BMGs Recently, a fully amorphous Pd-based BMG (Pd43Cu27Ni10P20) was successf manufactured using the LPBF method [64].…”

Section: Precious Bmgmentioning

confidence: 99%

Mechanical Properties of Bulk Metallic Glasses Additively Manufactured by Laser Powder Bed Fusion: A Review

Luo,

2023

Materials

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Bulk metallic glasses (BMGs) display excellent strength, high hardness, exceptional wear resistance and corrosion resistance owing to its amorphous structure. However, the manufacturing of large-sized and complex shaped BMG parts faces significant difficulties, which seriously hinders their applications. Laser powder bed fusion (LPBF) is a typical additive manufacturing (AM) technique with a cooling rate of up to 108 K/s, which not only allows for the formation of amorphous structures but also solves the forming problem of complex-shaped BMG parts. In recent years, a large amount of work has been carried out on the LPBF processing of BMGs. This review mainly summarizes the latest progress in the field of LPBF additively manufactured BMGs focusing on their mechanical properties. We first briefly review the BMG alloy systems that have been additively manufactured using LPBF, then the mechanical properties of LPBF-fabricated BMGs including the micro- and nano-hardness, micropillar compressive performance, and macro-compressive and tensile performance are clarified. Next, the relationship between the mechanical properties and microstructure of BMGs produced via LPBF are analyzed. Finally, the measures for improving the mechanical properties of LPBF-fabricated BMGs are discussed. This review can provide readers with an essential comprehension of the structural and mechanical properties of LPBF-manufactured BMGs.

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Section: Precious Bmgmentioning

confidence: 99%

Mechanical Properties of Bulk Metallic Glasses Additively Manufactured by Laser Powder Bed Fusion: A Review

Luo,

2023

Materials

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“…Since pure precious metals are soft and not resistant to wear and scratching, preciousmetals-based alloys have been developed to obtain materials with improved (mechanical) properties. However, desirable mechanical properties in precious alloys are not easy to achieve, even after several thermo-mechanical treatments [133,[136][137][138][139][140]. In addition, some of the precious alloys are difficult to process.…”

Section: Based On Precious Metalsmentioning

confidence: 99%

Additive Manufacturing of Bulk Metallic Glasses—Process, Challenges and Properties: A Review

Sohrabi

Jhabvala

Logé

2021

Metals

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Bulk Metallic Glasses (BMG) are metallic alloys that have the ability to solidify in an amorphous state. BMGs show enhanced properties, for instance, high hardness, strength, and excellent corrosion and wear resistance. BMGs produced by conventional methods are limited in size due to the high cooling rates required to avoid crystallization and the associated detrimental mechanical properties. Additive manufacturing (AM) techniques are a potential solution to this problem as the interaction between the heat source, e.g., laser, and the feedstock, e.g., powder, is short and confined to a small volume. However, producing amorphous parts with AM techniques with mechanical properties comparable to as-cast samples remains a challenge for most BMGs, and a complete understanding of the crystallization mechanisms is missing. This review paper tries to cover recent progress in this field and develop a thorough understanding of the correlation between different aspects of the topic. The following subjects are addressed: (i) AM techniques used for the fabrication of BMGs, (ii) particular BMGs used in AM, (iii) specific challenges in AM of BMGs such as the control of defects and crystallization, (iv) process optimization of mechanical properties, and (v) future trends.

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“…[21] The majority of BMG research has focused on the optimization of alloy compositions in order to enhance their thermophysical and mechanical properties. [24] However, less is known about how the composition of BMGs can steer their bioactivity. The potential use of BMGs for blood-contacting devices was recently reported, showing that Pd 77.5 Si 16.5 Cu 6 exhibits higher thrombogenic resistance than Ti64 in vitro, [25] indicating that the thrombogenic properties of BMGs, and thus their application, can be tailored based on their chemical composition.…”

Section: Introductionmentioning

confidence: 99%

Surface Chemistry Dictates the Osteogenic and Antimicrobial Properties of Palladium‐, Platinum‐, and Titanium‐Based Bulk Metallic Glasses

Lackington,

Wiestner,

Pradervand

et al. 2023

Adv Funct Materials

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Titanium alloys are commonly used as biomaterials in musculoskeletal applications, but their long‐term efficacy can be limited by wear and corrosion, stress shielding, and bacterial colonization. As a promising alternative, bulk metallic glasses (BMGs) offer superior strength and corrosion resistance, but the influence of their chemical composition on their bioactivity remains largely unexplored. This study, therefore, aims to examine how the surface chemistry of palladium (Pd)‐, platinum (Pt)‐, and titanium (Ti)‐based BMGs can steer their response to biological systems. The chemical composition of BMGs governs their thermophysical and mechanical properties, with Pd‐based BMGs showing exceptional glass‐forming ability suitable for larger implants, and all BMGs exhibiting a significantly lower Young's modulus than Ti‐6Al‐4 V (Ti64), suggesting a potential to reduce stress shielding. Although BMGs feature copper depletion at the near surface, their surface chemistry remains more stable than that of Ti64 and supports blood biocompatibility. Fibrin network formation is heavily dependent on BMGs’ chemical composition and Ti‐based BMGs support thicker fibrin network formation than Ti64. Furthermore, BMGs outperform Ti64 in promoting mineralization of human bone progenitor cells and demonstrate antimicrobial properties against Staphylococcus aureus in a surface chemistry‐dependent manner, thereby indicating their great potential as biomaterials for musculoskeletal applications.

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Bulk metallic glasses based on precious metals: Thermal treatments and mechanical properties

Cited by 15 publications

References 56 publications

Mechanical Properties of Bulk Metallic Glasses Additively Manufactured by Laser Powder Bed Fusion: A Review

Mechanical Properties of Bulk Metallic Glasses Additively Manufactured by Laser Powder Bed Fusion: A Review

Additive Manufacturing of Bulk Metallic Glasses—Process, Challenges and Properties: A Review

Surface Chemistry Dictates the Osteogenic and Antimicrobial Properties of Palladium‐, Platinum‐, and Titanium‐Based Bulk Metallic Glasses

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