Scholarlink

<p>High-Entropy Alloys (HEAs) are attractive materials for the biomedical and aerospace industries due to their enhanced mechanical properties and corrosion resistance. Several techniques have been successfully employed to fabricate HEAs, including melting and powder metallurgy. However, the effect of mechanical pre-alloying (MA) before melting is insufficiently studied. In this work, a TiNbZr<sub>0.73</sub>V<sub>0.26</sub>Fe<sub>0.16</sub>Al<sub>0.16</sub> HEA was fabricated by two routes: melting from elemental powders and melting of pre-alloyed powders for 20&#xa0;h. Results confirmed a BCC structure in the HEA without pre-alloying, whereas the pre-alloyed HEA exhibited a combination of BCC + FCC structures, along with secondary phases. The pre-alloyed HEA exhibited a 67% higher microhardness than the elemental melted alloy, indicating that MA produced a hardening effect after the melting process. Nevertheless, corrosion results revealed a 30% higher corrosion potential and 75% lower corrosion rate for the non-MA HEA, indicating a more resistant to corrosion behavior material compared to the pre-alloyed HEA.</p> Graphical Abstract <p></p>

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

Effect of mechanical alloying on the microstructure, microhardness, and corrosion behavior of a TiNbZrVFeAl high-entropy alloy

  • 期刊论文

  • 发表日期：

    2026年3月17日

查看全文
  • L. López-Arámburo,
  • J. Chávez,
  • O. Jiménez,
  • L. Olmos,
  • M. Flores-Jiménez,
  • E. Rodríguez,
  • J. Ibarra-Montalvo

摘要

High-Entropy Alloys (HEAs) are attractive materials for the biomedical and aerospace industries due to their enhanced mechanical properties and corrosion resistance. Several techniques have been successfully employed to fabricate HEAs, including melting and powder metallurgy. However, the effect of mechanical pre-alloying (MA) before melting is insufficiently studied. In this work, a TiNbZr0.73V0.26Fe0.16Al0.16 HEA was fabricated by two routes: melting from elemental powders and melting of pre-alloyed powders for 20 h. Results confirmed a BCC structure in the HEA without pre-alloying, whereas the pre-alloyed HEA exhibited a combination of BCC + FCC structures, along with secondary phases. The pre-alloyed HEA exhibited a 67% higher microhardness than the elemental melted alloy, indicating that MA produced a hardening effect after the melting process. Nevertheless, corrosion results revealed a 30% higher corrosion potential and 75% lower corrosion rate for the non-MA HEA, indicating a more resistant to corrosion behavior material compared to the pre-alloyed HEA.

Graphical Abstract