| Project/Area Number |
26630353
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Structural/Functional materials
|
|---|
| Research Institution | Kyushu University |
|---|
Principal Investigator |
Tanaka Masaki 九州大学, 工学(系)研究科(研究院), 准教授 (40452809)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
HIGSHIDA Kenji 九州大学, 大学院工学研究院, 教授 (70156561)
MORIKAWA Tatsuya 九州大学, 大学院工学研究院, 助教 (00274506)
|
|---|
| Project Period (FY) |
2014-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Keywords | 構造材料 / 転位 / 構造・機能材料 / 格子欠陥 |
|---|
| Outline of Final Research Achievements |
Austenitic steels are wildly used in low temperature environments since metals with face-centred-cubic structure do not show low temperature embrittlement. Since those steels contain a large amount of Ni which is expensive, Ni-free austenitic high nitrogen steels draw an attention, replacing Ni with nitrogen. It has been thought that fcc metals do not show low temperature embrittlement, however, Ni-free austenitic high nitrogen steels show brittle-to-ductile transition. In the present study, the mechanism behind the transition was elucidated.
|
