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Neutron Diffraction Analysis of Residual Stresses near Unannealed Welds in Anhydrous Ammonia Nurse Tanks

机译:无水氨护理罐未退火焊缝附近残余应力的中子衍射分析

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摘要

Neutron diffraction analysis was employed to measure residual stresses near welds in used anhydrous ammonia nurse tanks. Tensile residual stresses contribute to stress corrosion cracking of nurse tanks, which can cause tanks to release toxic ammonia vapor. The analysis showed that tensile residual stresses were present in the tanks measured, and the magnitudes of these stresses approached the yield strength of the steel. Implications for agricultural safety and health are discussed.
机译:使用中子衍射分析来测量用过的无水氨水护理罐中焊缝附近的残余应力。拉伸残余应力会导致护士水箱的应力腐蚀开裂,这可能导致水箱释放有毒的氨气。分析表明,测得的储罐中存在拉伸残余应力,这些应力的大小接近钢的屈服强度。讨论了对农业安全和健康的影响。

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