Development of novel metastable beta titanium alloys with ultrahigh strength and large ductility

• Project/Area Number: 24K08018
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 26010:Metallic material properties-related
• Research Institution: Kyoto University
• Principal Investigator: 崇 厳 京都大学, 工学研究科, 特定助教 (10782047)
• Project Period (FY): 2024-04-01 – 2027-03-31
• Project Status: Granted (Fiscal Year 2024)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2026: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2025: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2024: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: Titanium alloy / Mechanical property / Interstitial alloying / Microstructure design

Outline of Research at the Start

This research project is aimed to explore new strategies, by either microstructural design or interstitial alloying, to develop novel metastable β titanium alloys that exhibit both ultra-high yield strength and large ductility at room temperature. Based on an in-depth multi-scale investigation of the deformation mechanisms combined with state-of-the-art theoretical simulations, we are aiming to establish a more comprehensive alloy design theory for metastable β titanium alloys that is capable of incorporating the influences of both substitutional and interstitial solutes.