Analysis of Residual Stress in Steel Bar Processed by Cold Drawing and Straightening
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- Nishida Satoru
- Akiyama Seiko Co., Ltd.
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- Nishino Souichiro
- Graduate School of Science and Engineering, Ibaraki University
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- Sekine Masahiko
- Akiyama Seiko Co., Ltd.
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- Oka Yuuki
- Graduate School of Science and Engineering, Ibaraki University
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- Harjo Stefanus
- J-PARC Center, Japan Atomic Energy Agency
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- Kawasaki Takuro
- J-PARC Center, Japan Atomic Energy Agency
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- Suzuki Hiroshi
- Materials Science Research Center, Japan Atomic Energy Agency
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- Morii Yukio
- Radiation Application Development Association
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- Ishii Yoshinobu
- Radiation Application Development Association
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Abstract
<p>In this study, we used neutron diffraction to analyze in a non-destructive method the distribution of internal residual stress in a free-cutting steel bar processed by cold drawing and straightening. Since a change in lattice-plane spacing occurs in a strain-free standard sample used as a reference due to the cold-drawing and straightening processes, it was necessary for the sake of improving measurement accuracy to prepare strain-free standard samples for each individual process. As a result, the residual stresses were successfully measured with excellent stress balance. The residual stresses generated by the cold-drawing process were reduced by subsequent straightening, and the distribution of residual stresses by finite element method (FEM) simulation was consistent with the measured values by neutron diffraction. As a result of the FEM analysis, it is assumed that the rod was subjected to strong tensile strains in the axial direction during the drawing process, and the residual stresses were generated when the rod was unloaded. Those residual stresses were presumably reduced by the redistribution of residual stresses in the subsequent straightening process.</p>
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 62 (5), 667-674, 2021-05-01
The Japan Institute of Metals and Materials
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Keywords
Details 詳細情報について
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- CRID
- 1390850777444871808
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- NII Article ID
- 130008029660
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- NII Book ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 031433407
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed