Scholarlink

The present work explores the design and development of refractory metal-based high entropy alloys targeting various diverse industrial applications, including marine, high-temperature, biomedical, and cutting tool. This chapter focuses on a few novel alloy compositions and characterization of their specific properties that are particularly important for each of the aforementioned applications. For marine application, Ti addition to Cantor alloy was explored through alloy design. Corrosion testing of Tix(CoCrFeMnNi)100-x HEAs was carried out in simulated seawater environment. It was found that the corrosion rate decreases from 5.63 × 10−3 to 0.63 × 10−3 mm/year as the Ti content increases from 3 to 9 at.%, which is significantly lower than that of the 316 L stainless steel (16.82 × 10−3 mm/year). For high-temperature applications, the oxidation behavior of Ti–Nb–Mo–Fe–Cr-based RHEAs was investigated. The study revealed that the mass gain per unit surface area of the TiNbMoFeCr and Ti10Nb20Mo20Fe20Cr30 RHEAs is lower than that of the several other reported RHEAs in the literature, suggesting that the alloys designed in the present investigation are suitable for high-temperature applications. For the purpose of biomedical applications, a novel Ti–Zr–Nb–Mo–Fe–Cr-based RHEA was developed. The latter alloy exhibited high strength and hardness, with an elastic modulus comparable to that of Ti alloys and significantly lower compared to 316 L stainless steel in both the as-cast and 1100 °C annealed states. High-pressure torsion (HPT) deformation of the as-cast RHEA further decreased the elastic modulus (E = 68.37 GPa), thereby reducing the stress-shielding effect. MTT assay and confocal microscopy analyses indicate that the Ti–Zr–Nb–Mo–Fe–Cr-based RHEA demonstrates higher biocompatibility than 316L stainless steel and thus exhibits significant potential for biomedical applications. Finally, C-containing (TiNbMoTaZr)98C2, (TiNbMoTaV)95C5, and (TiNbMoZrCr)95C5 RHEAs were developed for cutting tool applications. These alloys showed superior wear resistance compared to AISI H11 tool steel, indicating strong potential for cutting tool applications.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Designing and Developing Refractory Metal-Based High Entropy Alloys for Various Applications

  • 章节

  • 发表日期：

    2026年

查看全文
  • Dharmendra K. Yadav,
  • Subhasis Sinha

摘要

The present work explores the design and development of refractory metal-based high entropy alloys targeting various diverse industrial applications, including marine, high-temperature, biomedical, and cutting tool. This chapter focuses on a few novel alloy compositions and characterization of their specific properties that are particularly important for each of the aforementioned applications. For marine application, Ti addition to Cantor alloy was explored through alloy design. Corrosion testing of Tix(CoCrFeMnNi)100-x HEAs was carried out in simulated seawater environment. It was found that the corrosion rate decreases from 5.63 × 10−3 to 0.63 × 10−3 mm/year as the Ti content increases from 3 to 9 at.%, which is significantly lower than that of the 316 L stainless steel (16.82 × 10−3 mm/year). For high-temperature applications, the oxidation behavior of Ti–Nb–Mo–Fe–Cr-based RHEAs was investigated. The study revealed that the mass gain per unit surface area of the TiNbMoFeCr and Ti10Nb20Mo20Fe20Cr30 RHEAs is lower than that of the several other reported RHEAs in the literature, suggesting that the alloys designed in the present investigation are suitable for high-temperature applications. For the purpose of biomedical applications, a novel Ti–Zr–Nb–Mo–Fe–Cr-based RHEA was developed. The latter alloy exhibited high strength and hardness, with an elastic modulus comparable to that of Ti alloys and significantly lower compared to 316 L stainless steel in both the as-cast and 1100 °C annealed states. High-pressure torsion (HPT) deformation of the as-cast RHEA further decreased the elastic modulus (E = 68.37 GPa), thereby reducing the stress-shielding effect. MTT assay and confocal microscopy analyses indicate that the Ti–Zr–Nb–Mo–Fe–Cr-based RHEA demonstrates higher biocompatibility than 316L stainless steel and thus exhibits significant potential for biomedical applications. Finally, C-containing (TiNbMoTaZr)98C2, (TiNbMoTaV)95C5, and (TiNbMoZrCr)95C5 RHEAs were developed for cutting tool applications. These alloys showed superior wear resistance compared to AISI H11 tool steel, indicating strong potential for cutting tool applications.