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首页> 美国政府科技报告 >Neutron Diffraction Investigation of Residual Stresses in Transverse/Oblique Rail211 Slices Subjected to Different Grinding Strategies
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Neutron Diffraction Investigation of Residual Stresses in Transverse/Oblique Rail211 Slices Subjected to Different Grinding Strategies

机译：不同磨削策略下横向/斜向Lat1111切片残余​​应力的中子衍射研究

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Using the Double Axis system for Residual stress, Texture, and Single crystal211u001eanalysis (DARTS) at NIST, neutron diffraction residual stress measurements were 211u001ecarried out in the head region of five pairs of transverse and oblique cut slices 211u001eof railroad track, each having a thickness of 6.35 mm. The slices were taken from 211u001ea 300 HB rail of CFI 136 RE size. All slices except one unworn reference piece 211u001ehad the same accumulated tonnage but were ground in different intervals. The 211u001emeasurements confirm the results previously found which indicated the existence 211u001eof high sub-surface residual tensile stresses, while the regional close to the 211u001ewheel-rail contact line shows high residual compressive stresses.

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