The state of residual stress in the near surface region of homogeneous and heterogeneous materials after grinding

The state of residual stress in the near surface region of homogeneous and heterogeneous materials after grinding
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均质和异质材料磨削后近表面区域的残余应力状态

DOI:
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发表时间:
1982
期刊:
影响因子:
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通讯作者:
G. Vaessen
G. Vaessen
中科院分区:
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文献类型:
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作者:
V. Hauk;R. Oudelhoven;G. Vaessen

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利用面心立方和体心立方结构均匀和非均质材料的各种峰,用不同波长的X射线测量了不同条件下磨削后表面附近的残余应力。应变分布服从ψ分裂。阐述了用不同波长的X射线测量应力随深度变化的方法。对两种研磨钢的计算表明,该方法得到的应力随深度的分布与用单波长去层法测得的应力分布相吻合。随着深度的增加,正应力和剪应力绝对减小。讨论了剪切残馀应力的存在,并得出结论:对于非均质材料,这些残馀应力可以用其他相相反号的残馀应力来补偿。
The residual stresses near the surface were measured after grinding under different conditions with X-rays of various wavelengths using various peaks from homogeneous and heterogeneous materials with fcc-and bcc-structures. The strain distributions were subject toψ-splitting. A method was elaborated to measure the variation of stress as a function of depth with X-rays of various wavelengths. For two ground steels it was shown that this method gave stress distributions with depth which were in good agreement with those evaluated from stress measurements with one wavelength and layer removal. Normal-and shear stresses decreased absolutely with increasing depth. The existence of shear residual stresses was discussed and it was concluded that for heterogeneous materials these stresses can be compensated by those of opposing sign in the other phases.