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引張負荷下で単一すべり系が活動するアルミニウム単結晶の延性損傷評価
Evaluation of Ductile Damage in Aluminum Single Crystal with Prior Activity of Single Slip System under Tensile Loading
Evaluation of Ductile Damage in Aluminum Single Crystal with Prior Activity of Single Slip System under Tensile Loading
柴野, 純一
梶原, 堅太郎
塚本, 拓也
河合, 紘和
三浦, 節男
張, 朔源
菖蒲, 敬久
c 2014 公益社団法人日本材料学会
Aluminum single crystal
Ductile damage
Crystal orientation
Profile analysis
Dislocation density
White X-ray
A ductile damage progress of an aluminum single crystal with the prior activity of the single slip system under tensile loading was verified by a profile analysis using white X-ray obtained in BL28B2 beam line of SPring-8. In this study, the aluminum single crystal of the purity 6N was used as a specimen prepared in I-type geometry for tensile test. A notch was introduced into one side of the center of a parallel part of the specimen by the wire electric discharge machining. White X-ray beam, which has 50 μm in both height and width, was incident into the specimen on the Bragg angle θ of 3 degrees using energy dispersive X-ray diffraction technique. The specimen was deformed by elongation in the direction of 45° to [111] and [110] crystal orientations, respectively, and a diffraction profile of the white X-rays from Al220 plane was analyzed. In profile analysis, an instrumental function was defined in consideration both of a divergence by slits and a response function peculiar to the energy dispersive method. The Gauss component of integral breadth related to non-uniform strain and the Cauchy component of integral breadth related to crystallite size were determined by eliminating the broadening by the instrumental function from the diffraction profile of white X-rays. As a result, dislocation density increased as ductile damage progressed, but it was relatively low near the notch. The influence of a release of the strain energy by a ductile damage progress was expected. The characteristics of ductile damage progress near the notch of the aluminum single crystal with a prior activity of a single slip system under the tensile loading were clarified from the distribution of dislocation density.
公益社団法人日本材料学会
2014-07
jpn
journal article
VoR
https://kitami-it.repo.nii.ac.jp/records/7971
https://doi.org/10.2472/jsms.63.533
材料
63
7
533
538
https://kitami-it.repo.nii.ac.jp/record/7971/files/2014.07_引張負荷下で単一すべり系が活動するアルミニウム単結晶の延性損傷評価 .pdf
application/pdf
1.9 MB
2016-11-22