Establishment of procedures to obtain the maximum TRIP effect
Project/Area Number |
26289264
|
Research Category |
Grant-in-Aid for Scientific Research (B)
|
Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Structural/Functional materials
|
Research Institution | University of Hyogo |
Principal Investigator |
|
Co-Investigator(Kenkyū-buntansha) |
Stefanus Harjo (STEFANUS Harjo) 国立研究開発法人日本原子力研究開発機構, その他部局等, 研究員 (40391263)
友田 陽 茨城大学, その他部局等, 名誉教授 (90007782)
|
Project Period (FY) |
2014-04-01 – 2018-03-31
|
Project Status |
Completed (Fiscal Year 2017)
|
Budget Amount *help |
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
|
Keywords | 鉄鋼 / TRIP効果 / 強度 / 延性 / 鉄鋼材料 |
Outline of Final Research Achievements |
The maximum TRIP effect due to the effective use of retained austenite was studied by using a TRIP steel. Tensile tests with a wide range of temperature and strain rate were conducted. In situ neutron diffraction experiments during tensile deformation were performed to discuss the deformation-induced transformation behavior and the contribution of each phase to flow stress. We can make clear the results of deformation-induced martensite which was difficult to show quantitatively for the first time. Room-temperature creep tests under constant load were also conducted using the TRIP steel. The volume fractions of deformation-induced martensite at a given true strain obtained from constant load creep tests were larger than those from tensile tests. Based on the experimental results from several viewpoints, the test condition and deformation-induced transformation behavior to obtain the uniform elongation 1.5 times as large as that at 296 K can be clarified.
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Report
(5 results)
Research Products
(32 results)