High strength Mg-Sc alloy using Ordered BCC phase
| Project/Area Number |
25820364
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Material processing/Microstructural control engineering
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
ANDO Daisuke 東北大学, 工学(系)研究科(研究院), 助教 (50615820)
|
|---|
| Project Period (FY) |
2013-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Keywords | マグネシウム / スカンジウム / 二相組織 / 時効硬化 / 二相組織制御 / マグネシウム合金 / 高強度 / 高延性 |
|---|
| Outline of Final Research Achievements |
In this study, the mechanical properties, especially Vickers hardeness, were investitagted in various Mg-Sc alloys with hcp single phase, bcc single phase and hcp+bcc dual phase. These Vickers hardeness were 115Hv for hcp, 100Hv for bcc. After aging treatment at 473 K for 18 ks in Mg-16.8at%Sc, the maximum Vickers hardness was 231.5Hv which is highest value in Mg based alloy expected for metallic glass. The hardening mechanism was discussed according to TEM, SEM/EBSD and XRD results. This significant age-hardening could be explained by the solid-solution hardening of Sc in Mg and the grain refinement hardening by the nano-size hcp precipitates.
|
Report
(3 results)
Research Products
(7 results)
