Predicting the thermal expansion of body-centred cubic (BCC) high entropy alloys in the Mo–Nb–Ta–Ti–W system

Wilson, Jack; Evitts, L. J.; Fraile, Alberto; Wilson, Roy D.; Rushton, Michael; Goddard, D. T.; Lee, William; Middleburgh, Simon C.

doi:10.1088/2515-7655/ac6f7e

Cited by 3 publications

(2 citation statements)

References 65 publications

(90 reference statements)

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“…This has been observed in the work conducted by Bonisch et al [11] where the lattice parameters showed dependence on Nb content in TiNb. The linear thermal expansion of the Nb-rich orthorhombic martensite phase was found to be larger along the lattice parameter a than lattice parameters b and c. The a expanded at a rate of 163 Â 10 À6 °CÀ1 at temperatures below 500 K, indicating the high thermal expansion of 9.2 Â 10 -6 °CÀ1 for Nb compared to Ti which is 8.4 Â 10 -6 °CÀ1 [35].…”

Section: Computational Detailsmentioning

confidence: 89%

An Insight towards the Design of a Ruthenium-Containing Biomaterial

Nkomo¹,

Phasha²,

Moller³

2023

Ruthenium - Materials Properties, Device Characterizations, and Advanced Applications

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Ruthenium (Ru) is one of the platinum group metals (PGMs). These metals belong to the transition metals group of the periodic table. They have excellent properties such as high melting point and are inert with variety of substances, thus also called noble metals. Currently, Ru is the cheapest of the PGMs, thus it is readily available compared to other PGMs. Recently, incorporating PGMs in shape memory alloys (SMAs) has been extensively explored, with titanium-nickel (TiNi) used as a bench-mark material. TiRu is amongst the compounds that are currently explored for various potential applications. This compound has an ordered B2 (CsCl-type) crystal structure. It is hard and brittle, thus some shape memory (SM) properties are difficult to induce in this compound. However, due to Ru possessing some good biomedical properties such as biocompatibility, corrosion resistance, improved radiopacity and ultra-low magnetic susceptibility for MRI diagnostics, the mechanical properties of TiRu must be improved for biomedical applications. Since niobium (Nb) is known to be biocompatible and is usually studied in biomedical alloys, a systematic substitution of Ti with niobium (Nb) was performed in an effort to reduce the stiffness (Young’s modulus). This chapter gives an insight on the structural and mechanical properties of biocompatible Ru-rich alloy compositions.

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Section: Computational Detailsmentioning

confidence: 89%

An Insight towards the Design of a Ruthenium-Containing Biomaterial

Nkomo¹,

Phasha²,

Moller³

2023

Ruthenium - Materials Properties, Device Characterizations, and Advanced Applications

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show abstract

“…High entropy alloys (HEAs), sometimes referred to as compositionally complex alloys, multicomponent element alloys, or concentrated solid solutions, pioneered by Cantor et al [1] and Yeh et al [2], offer innovative multi-component alloy compositions for extreme environment materials such as in the nuclear [3,4] or aerospace [5] industries. Originally defined as having 5 or more elements in high concentrations (5 -35 at%) [2], high entropy alloys could offer superior properties, including strength and hardness [6,7], oxidation resistance [8][9][10][11], and high thermal stability [12].…”

Section: Introductionmentioning

confidence: 99%