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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Advances in Multi-Principal Element Alloys V: Mechanical Behavior
Presentation Title Modulation of Mechanical Behavior in High-Entropy Nitride Coatings
Author(s) Cheng-Hsien Tu, Cheng-Hsien Yeh, Bernard Haochih Liu, Wen-Dung Hsu, Chuan-Feng Shih
On-Site Speaker (Planned) Cheng-Hsien Tu
Abstract Scope Metallic materials are widely used in applications from transportation to biomedical implants, each requiring specific properties. High-entropy alloys (HEAs) offer superior hardness and Young’s modulus compared to pure metals. However, surface wear resistance is crucial for substrate protection. This study applies high-entropy nitride (HEN) films as protective coatings on magnesium alloys using sputtering techniques. By introducing nitrogen and adjusting the N/Ar gas ratio, mechanical performance was significantly improved. The untreated magnesium alloy had a hardness of 1.4 GPa and Young’s modulus of 43.4 GPa. A non-nitrided HEA coating increased hardness to 4.35 GPa and modulus to 79.1 GPa, while at N/Ar = 2.2%, values reached 5.57 GPa and 85 GPa, respectively. These findings demonstrate that HEN coatings effectively enhance HEA mechanical properties, showing strong potential for surface engineering applications.
Proceedings Inclusion? Planned:
Keywords Magnesium, High-Entropy Alloys, Surface Modification and Coatings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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Accurate Determination of the Deformation Mechanisms in Refractory Compositionally Complex Alloys
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Additive Manufacturing: From Complex Alloys to Simple Alloys
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CALPHAD-Guided Development and Mechanical Evaluation of Dual-Phase CoFeNiVTi Alloys
Combinatorial microstructure & stoichiometry-based and hybrid machine learning & domain knowledge for hardness mapping in a high-entropy alloy
Comparison of NbxMo1-x and (VNbTa)xMo1-x Refractory MPEA Thin Films by In Situ Microcantilever Beam Bending
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Creep Properties of NbTaTi-Based Refractory High-Entropy Alloys
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Dislocation Analysis of CrCoNi using Micropillar Experiments and Molecular Dynamics Simulations
Dislocation Properties in Refractory Compositionally Complex Alloys
Dry Sliding Wear of Cu-Alloyed Low-Carbon Steels: Role of Oxides and Quenching Temperature
Ductile-Brittle Transitions in bcc Refractory High-Entropy Alloys
Dynamic properties of NbTaTiHf High-Entropy Alloy
EBSD analysis of microstructure evolution in hot-deformed WMoFeNi MPEA Alloy system
Effect of minor Ge/Mo/W on the corrosive behavior in FCC CoCrFeNi high-entropy alloy
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Examining the influence of multiphase evolution and elemental partitioning on mechanical behavior in Nb-V-Zr alloys
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Experimental Study of Corrosion, Wear and Biocompatibility Behavior of Novel Senkov-Derivative Refractory High-Entropy Alloys
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