Volume Fraction Dependence of Plastic and Diffusional Accommodation in High-Temperature Deformation of Ti/TiB In Situ Composite: Appearance and Vanishing of Load Transfer Effect
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- Kawabata Kenshi
- The Institute of Space and Astronautical
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- Sato Eiichi
- The Institute of Space and Astronautical
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- Kuribayashi Kazuhiko
- The Institute of Space and Astronautical
書誌事項
- タイトル別名
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- Volume Fraction Dependence of Plastic and Diffusional Accommodation in High-Temperature Deformation of Ti/TiB <I>In Situ</I> Composite: Appearance and Vanishing of Load Transfer Effect
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The appearance and vanishing of the load transfer effect in the steady-state condition of composites’ creep were analyzed via consideration of two accommodation processes, diffusion and plastic, which are inevitable for composites to continue creep deformation. Creep experiments were performed using model materials, Ti–5, 15 and 20 vol%TiB in situ composites, which have moderate diffusional-accommodation-controlled creeps, good interfacial bonding and no fine dispersions. With higher strain rates than the diffusional-accommodation-controlled creep, the stress exponent of all composites was 4.5, similar to that of α–Ti, 4.3, and the strain rates decreased with increasing volume fraction of the reinforcements. Variations of the strain rate agreed with the prediction by the self-consistent potential method, and thus the load transfer effect was confirmed in this region. With strain rates near the diffusional-accommodation-controlled creep, the stress exponents of Ti–15 and 20 vol%TiB decreased to 2. With a strain rate lower than the diffusional-accommodation-controlled creep, the strain rates of the composites did not decrease with increasing volume fraction, and vanishing of the load transfer effect was observed.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 43 (7), 1653-1657, 2002
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001204246819328
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- NII論文ID
- 130004451878
- 10012325437
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD38Xmt1equ7g%3D
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 6241117
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可