正交法优化X射线衍射测量铝合金残余应力
Hot Working Technology(2013)
Abstract
为提高X射线衍射法测量材料残余应力的精度,减小残余应力误差,采用不同X射线衍射参数对6061-T6铝合金进行残余应力测量,并用正交实验法对测量结果进行分析。结果表明:6061-T6铝合金表面质量对残余应力的测量影响较大,误差达到±40~±60MPa;管电压、管电流是影响残余应力测量精度的主要因素;采用管电压22kV,管电流6 mA,计数时间1s,准直管直径2 mm,可快速获得更好的效果。
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Key words
residual stress,X-ray diffraction,6061-T6 aluminum alloy,orthogonal experiment
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