Micro-residual stresses of plastically deformed austenitic stainless steel

被引:0
|
作者
Suzuki K. [1 ]
Shobu T. [2 ]
机构
[1] Faculty of Education, Niigata University, Nishi-ku, Niigata
[2] Material Sciences Research Center, Japan Atomic Energy Agency, Sayo-gun, Hyogo
关键词
Austenitic stainless steel; Cos[!sup]2[!/sup] χ method; Intergranular strain; Lattice plane dependence; Micro-residual stress; Plastic deformation; Synchrotron X-ray;
D O I
10.2472/jsms.67.708
中图分类号
学科分类号
摘要
Austenitic stainless steel was plastically deformed under uniaxial tension, and its plastic strain measured was 2.8%. The micro-residual stress were measured by the cos2 χ method using hard synchrotron X-ray with about 70 keV. The 2 θ-cos2 χ diagrams for the 4 0 0 and 6 2 0 lattice planes, which belonged to a soft lattice plane, showed an upward warp. In contrast, the 2 θ-cos2 χ diagrams for the 4 4 0 and 3 3 1 lattice planes, which belonged to a hard lattice plane, showed a downward warp. This is caused by the micro-residual strains such as intergranular strains. To investigate detail of the micro-residual stress by plastic deformation, the distributions of the residual strains were measured in omni-azimuth angles. As a result, the micro-residual strains for a soft lattice plane balanced with that for a hard lattice plane. © 2018 The Society of Materials Science, Japan
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页码:708 / 714,
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