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Relationship between Microstructure of Additional Shear Strain Layer<br>and Increase in Tensile Strength of Finely Drawn Wire

DOI 4 Citations 13 References

Bibliographic Information

Other Title
  • 細線伸線材の表層部付加的せん断ひずみ層における<br>内部組織と引張り強さ向上の関係
  • サイセン シンセンザイ ノ ヒョウソウブ フカテキ センダン ヒズミソウ ニ オケル ナイブ ソシキ ト ヒッパリ ツヨサ コウジョウ ノ カンケイ ヒキヌキザイ ニ オケル ヒョウソウブ フカテキ センダン ヒズミソウ ノ ケンキュウ ダイ2ホウ
  • — Additional Shear Strain Layer at Surface of Drawn Wire II —
  • — 引抜き材における表層部付加的せん断ひずみ層の研究　第2報 —

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Abstract

Fine wires (with a diameter less than 0.4 mm) have been extensively used for precision machines and other devices. It is well known that finely drawn wires have a much higher tensile strength than thick drawn wires. In the drawing process, a large shear deformation zone with a hardened layer, known as the “additional shear strain layer”, is generated beneath the surface layer of the wire. It was clarified that the depth of this additional shear strain layer was about 0.04 mm for wires of various diameters. As the diameter becomes small, the area ratio of the additional shear layer increases. Hence, the additional shear strain layer is a factor contributing to the high tensile strength of fine wires. In this paper, the main purpose is to discuss the cause of the increase in the tensile strength of the additional shear strain layer metallurgically. Thus, the crystal orientation and microstructure was measured by the Electron Back-Scatter Diffraction (EBSD) method. It was ascertained that the crystal of the surface layer was subdivided more finely than the center, and then the tensile strength of the surface layer increased.

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Details

  • CRID
    1390001206498685824
  • NII Article ID
    10020806505
  • NII Book ID
    AN00135062
  • DOI
    10.9773/sosei.49.409
  • COI
    1:CAS:528:DC%2BD1cXns1Cmtbw%3D
  • ISSN
    18820166
    00381586
    http://id.crossref.org/issn/00381586
  • NDL BIB ID
    9531235
  • Text Lang
    ja
  • Data Source
    • JaLC
    • NDL
    • Crossref
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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