Scholarlink

<p>Ni-Mn-Ti alloys have shown significant potential as elastocaloric materials for solid-state refrigeration. To further optimize their transformation and mechanical properties, the effects of incorporating different alloying elements have been previously explored. In this study, the influence of Indium (In) addition on a Ni–Mn–Ti alloy is examined. Ni<sub>47</sub>Mn<sub>43−x</sub>Ti<sub>10</sub>In<sub><i>x</i></sub> alloys (<i>x</i>&#xa0;=&#xa0;0–6 at.%) were synthesized by arc melting and characterized to evaluate how In modifies the transformation behavior and structural characteristics. The In-free alloy exhibits the martensitic transformation (MT) around 550 K, which shifts toward room temperature (RT) as In content increases, with minor changes in thermal hysteresis. Ti-rich precipitates were observed in all alloys, with no evident influence from In addition. Vickers microhardness decreases with increasing In content but increases again for the highest In level. Overall, In addition significantly influence the transformation and mechanical behavior of Ni–Mn–Ti alloys, highlighting its role in tailoring transformation temperatures for practical elastocaloric applications.</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

Microstructure and martensitic transition of Ni47Mn43-xTi10Inx alloys

  • 期刊论文

  • 发表日期：

    2026年1月14日

查看全文
  • D. A. Cisneros-Oliva,
  • D. I. Pineda-Ruiz,
  • M. López-Medina,
  • H. Flores-Zúñiga

摘要

Ni-Mn-Ti alloys have shown significant potential as elastocaloric materials for solid-state refrigeration. To further optimize their transformation and mechanical properties, the effects of incorporating different alloying elements have been previously explored. In this study, the influence of Indium (In) addition on a Ni–Mn–Ti alloy is examined. Ni47Mn43−xTi10Inx alloys (x = 0–6 at.%) were synthesized by arc melting and characterized to evaluate how In modifies the transformation behavior and structural characteristics. The In-free alloy exhibits the martensitic transformation (MT) around 550 K, which shifts toward room temperature (RT) as In content increases, with minor changes in thermal hysteresis. Ti-rich precipitates were observed in all alloys, with no evident influence from In addition. Vickers microhardness decreases with increasing In content but increases again for the highest In level. Overall, In addition significantly influence the transformation and mechanical behavior of Ni–Mn–Ti alloys, highlighting its role in tailoring transformation temperatures for practical elastocaloric applications.

Graphical abstract