Microstructure control of biomedical Co-Cr alloy by introducing high density of lattice defects
Project/Area Number |
26870050
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Material processing/Microstructural control engineering
Structural/Functional materials
|
Research Institution | Tohoku University |
Principal Investigator |
Yamanaka Kenta 東北大学, 金属材料研究所, 助教 (30727061)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
Keywords | 生体用Co-Cr合金 / 熱間加工 / 転位組織 / 放射光回折 / ラインプロファイル解析 / マルテンサイト変態 / 力学特性 |
Outline of Final Research Achievements |
In this study, we present a novel concept for strengthening biomedical Co-Cr alloys by introducing high density of lattice defects. A high tensile/fatigue strength was obtained in Co-Cr-Mo alloy specimens prepared with multipass hot rolling. Using X-ray diffraction line profile analysis, we demonstrated that the overall strengthening achieved in the proposed process cannot be explained by considering grain refinement and dislocation densities and revealed a significant contribution of stacking faults in the developed alloys.
|
Report
(4 results)
Research Products
(47 results)