RELATIONSHIP BETWEEN SERRATION AND MACROSCOPIC SLIDING SURFACE OF Al-MG ALLOY

DOI IR (HANDLE)

Bibliographic Information

Other Title
  • Al-Mg合金のセレーションと巨視的なすべり面の関係

Search this article

Description

The addition of the plastic deformation due to tensile test to certain aluminum alloy sheet, show a discontinuous stress-strain diagram. In the tensile test, such continuous yielding is called serration, serratedflow, its first investigators, the Portevin-LeChatelier(P-L) effect. When the periodic stress drop is appear, a deformation band that discontinuously propagates along the specimen gauge length with any inclination to the axis is observed. There are many papers on the P-L effect, and it is complicated that it has strain rate dependence and temperature dependence, and multiple serration shapes are observed. Serration does not occur on the stress-strain diagram immediately after the start of the tensile test, but occurs after a certain strain has elapsed. This paper focuses on the sliding surface caused by the initial yield at the beginning of serration using Al-Mg alloy A5083. In the generated slip surface, the slip plane angle is considered to be caused by Mises (octahedral shear stress theory) and Tresca (maximum shear stress theory) which are yield conditions. In this study, we calculated vertical stress and shear stress of them and evaluated the relationship with experimentally obtained slip surface.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390572174784480512
  • NII Article ID
    120006474084
  • NII Book ID
    AA12677220
  • DOI
    10.15002/00014803
  • HANDLE
    10114/14149
  • ISSN
    21879923
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • JaLC
    • IRDB
    • CiNii Articles
  • Abstract License Flag
    Allowed

Report a problem

Back to top