Stereographic Analysis of Grain Boundary Sliding in Superplastic Deformation of Alumina-Zirconia Two Phase Ceramics

• Ishihara Satoru

  Department of Materials Science and Engineering, Faculty of Engineering, Osaka University

• Tanizawa Tsuneyuki

  Department of Materials Science and Engineering, Faculty of Engineering, Osaka University

• Akashiro Koutarou

  Department of Materials Science and Engineering, Faculty of Engineering, Osaka University

• Furushiro Norio

  Department of Materials Science and Engineering, Faculty of Engineering, Osaka University

• Hori Shigenori

  Department of Materials Science and Engineering, Faculty of Engineering, Osaka University

Bibliographic Information

Other Title

• アルミナ・ジルコニア二相セラミックスの超塑性におけるステレオ写真解析法を用いた粒界すべりの評価
• アルミナ ジルコニア 2ソウ セラミックス ノ チョウソセイ ニ オケル ステレオ シャシン カイセキホウ オ モチイタ リュウカイスベリ ノ ヒョウカ

Abstract

Grain boundary sliding during superplastic deformation has been investigated for fine-grained Al₂O₃-20%ZrO₂(3 mol%Y₂O₃ doped ZrO₂) ceramics prepared with no additive in order to estimate the grain boundary sliding contribution to superplastic deformation for ceramic materials. Large strains are obtained by compression tests at the temperature of 1400 and 1500°C. Grain boundary sliding is clearly found to take place during the superplastic deformation. The intragranular strain contribution to the total strain was estimated from the aspect ratio of the grains after deformation. The grain boundary sliding was measured by an imaginary scratch line method and a stereographic analysis method. The grain boundary sliding contribution to the total strain can be estimated from the results of the stereographic analysis method, and multiplication by a calibration factor which compensates for the difference between grain boundary sliding at the surface and at the interior of the specimen. The contribution of the Al₂O₃-20%ZrO₂ ceramics are estimated to be about 40∼60%, which increases gradually with strain rate.

Journal

• Journal of the Japan Institute of Metals and Materials

  Journal of the Japan Institute of Metals and Materials 63 (3), 333-340, 1999

  The Japan Institute of Metals and Materials

Keywords

• alumina-zirconia
• superplasticity
• grain boundary sliding
• strain rate dependence
• stereographic method

Details

• CRID: 1390282681467407744
• NII Article ID: 130007341325
• NII Article ID: 10002549193
• NII Book ID: AN00187860
• DOI: 10.2320/jinstmet1952.63.3_333
• ISSN: 18806880
• ISSN: 24337501
• ISSN: 00214876
• NDL BIB ID: 4692079
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4692079
• Web Site: https://www.jstage.jst.go.jp/article/jinstmet1952/63/3/63_3_333/_pdf
• Data Source:
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  • NDL
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  • CiNii Articles
• Abstract License Flag: Disallowed