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Difference of Fracture Behavior on Isothermal Low Cycle Fatigue between SP-700/SCS-6 Titanium Alloy Matrix Composite and Monolithic Matrix Alloy
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- YAMAZAKI Yasuhiro
- Dept. of Mech. and Cont. Eng., Niigata Inst. of Tech.
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- OKAZAKI Masakazu
- Dept. of Mech. Eng., Nagaoka Univ. of Tech.
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- HIRANO Kazumi
- National Inst. of Advanced Industrial Sci. and Tech.
Bibliographic Information
- Other Title
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- SP‐700/SCS‐6チタン合金複合材とモノリシックなマトリックス材の低サイクル疲労破壊挙動の相違
- SP-700/SCS-6チタン合金複合材とモノリシックなマトリックス材の低サイクル疲労破壊挙動の相違
- SP 700 SCS 6 チタン ゴウキン フクゴウザイ ト モノリシック ナ マトリックスザイ ノ テイサイクル ヒロウ ハカイ キョドウ ノ ソウイ
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Description
The isothermal low cycle fatigue (LCF) fracture behavior of a new generation titanium alloy matrix composite, SP-700/SCS-6, were investigated compared with the monolithic matrix alloy. To study the effects of the test temperature and the loading frequency on the LCF fracture behavior in SP-700/SCS-6, the LCF tests were performed under strain-controlled condition at room temperature and 450°C. In the LCF tests two strain wave shapes were applied : the fast-fast wave in which the loading frequency was 0.5 Hz, and the slow-slow wave in which it was 1/360 Hz, respectively. The conclusions obtained from the experimental results are summarized as follows : (1) The LCF lives of the composite were almost comparable to those of the matrix alloy, on the basis of strain range. In other words, the performance of the present composite material can be absolutely improved, since the stiffness and the deformation resistance can significantly increased by the composition. (2) The fatigue cracks were initiated from the matrix part at the specimen corner. The fiber pull-out was not so significant on the fracture surface. (3) The LCF lives of the composite at 450°C were longer than those at room temperature. This trend was in contrast to the monolithic matrix alloy which exhibits a normal temperature dependence in the LCF lives. (4) The LCF lives of the composite under the slow-slow wave was noticeably shorter than those under the fast-fast wave at high temperature. This trend was familiar to the conventional monolithic materials.
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 54 (2), 187-192, 2005
The Society of Materials Science, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205418375680
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- NII Article ID
- 110006266469
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- NII Book ID
- AN00096175
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- COI
- 1:CAS:528:DC%2BD2MXisVOrt7Y%3D
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 7248286
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- Text Lang
- ja
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- Article Type
- journal article
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- Data Source
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- JaLC
- IRDB
- NDL Search
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed