| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
In this study, we developed a newly experimental method to measure the whole residual stress distribution from the surface to the interior of the carburized steel after quenching by complementary use of three kinds of radiation, x-ray, synchrotron x-ray and neutron beams. As a result, lattice plane spacing change in hardened case layer for stress evaluation could be determined successfully by measuring x-ray and neutron diffraction peaks. The residual stress distribution could be also evaluated by a combination of x-ray stress measurement for the carburized layer and neutron strain scanning for the interior.
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