Journal of Material Science and Technology Research
https://zealpress.com/jms/index.php/jmstr
<p>Journal of Material Science and Technology Research provides a platform for researchers, academicians and scientists to discuss, share and promote their research work in the field of Material Science and Technology. Our aim is to publish outstanding and latest research articles concerning fundamental and applied research of Material Science. The information can be made at hand in the form of research articles, review articles, case reports, short communications etc.</p>Zeal Pressen-USJournal of Material Science and Technology Research2410-4701Enhancing Mechanical Properties of a Lightweight TiAlCrNbVZr Medium-Entropy Alloy: Fine-Tuning Alloy Composition and Thermomechanical Treatment
https://zealpress.com/jms/index.php/jmstr/article/view/554
<p><strong>Abstract: </strong>The quest to reduce fuel consumption and environmental pollution in the transportation sector has heightened the demand for developing lightweight alloys with enhanced mechanical properties. Accordingly, this study focused on optimizing the mechanical properties of a lightweight Ti<sub>65</sub>(AlCrNbV)<sub>28</sub>Zr<sub>7</sub> medium entropy alloy (MEA) by strategically adjusting its Al, Cr, Nb, and V elemental contents. Hardness testing indicated a strengthening ability hierarchy of Cr > Al > V > Nb. Furthermore, tensile tests revealed that although a high Cr content significantly enhances strength, it also reduces the ductility of an MEA. Drawing on mechanical insights gained from a previously studied Ti<sub>60</sub>Al<sub>10</sub>Cr<sub>10</sub>Nb<sub>10</sub>V<sub>10</sub> MEA and the present findings, a novel Ti<sub>60</sub>Al<sub>10</sub>Cr<sub>4</sub>Nb<sub>10</sub>V<sub>9</sub>Zr<sub>7</sub> (Ti60Zr7) MEA was developed. This new alloy retains a single body-centered cubic structure and demonstrated exceptional mechanical performance in tensile testing, with a yield strength of 1066 MPa and 22% ductility. The Ti60Zr7 MEA underwent a series of thermomechanical treatments, including 50% hot rolling, 80% cold rolling, and rapid annealing up to 800 °C at a rate of 25 °C/s. After thermal processing, the Ti60Zr7 MEA not only preserved its single body-centered cubic structure but also achieved a remarkable combination of yield strength (>1200 MPa) and ductility (measured as >15% elongation). These advancements underscore the alloy’s considerable potential for application in sports equipment and transportation vehicles.</p>Po-Sung ChenTing-Wei SungPei-Hua TsaiYu-Chin LiaoJason Shian-Ching JangHsin-Jay WuShou-Yi ChangChih-Yen ChenI-Yu Tsao
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2024-03-042024-03-04111910.31875/2410-4701.2024.11.01