| Project/Area Number |
21K03766
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Review Section |
Basic Section 18010:Mechanics of materials and materials-related
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
魏 代修 東北大学, 金属材料研究所, 助教 (20785810)
|
|---|
| Project Period (FY) |
2021-04-01 – 2023-03-31
|
| Project Status |
Discontinued (Fiscal Year 2022)
|
| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
|---|
| Keywords | High entropy alloys / Mechanical properties / Plasticity / Short range order / Crystal defects / High entropy alloy / Mechanical property / Microstructure |
|---|
| Outline of Research at the Start |
The short-range order and its impact on plasticity of high entropy alloys are unclarified. The applicant aims to reveal the principles and kinetics by a combined methodology of ab initio calculation, Monte Carlo simulation, and experiments. It provides guidelines for manipulating their properties.
|
| Outline of Annual Research Achievements |
High-entropy alloys (HEAs) containing multiple principal metallic elements have extended the compositional space of alloys. We show that the realm of possibilities can be further expanded through substituting the constituent metals with metalloids, which are desirable for tailoring strength/ductility because they have chemical interactions and atomic sizes distinctly different from the host metallic elements. The mechanical properties can be further optimized by tuning the pre-strain-induced crystal defects. This strategy enables an unusual synergy of high tensile strength and extraordinary ductility for these single-phase alloys, which sheds lights on the development of high-performance metallic materials.
|
