Annealing effects on creep of polycrystalline alumina-based fibers
Continuous-length polycrystalline aluminum oxide-based fibers are being considered as reinforcements for advanced high-temperature composite materials. For these fine-grained fibers, basic issues arise concerning grain growth and microstructural instability during composite fabrication and the resul...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 1998-02, Vol.242 (1), p.278-283 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
| container_volume | 242 |
| creator | Goldsby, J.C Yun, H.M Morscher, G.N DiCarlo, J.A |
| description | Continuous-length polycrystalline aluminum oxide-based fibers are being considered as reinforcements for advanced high-temperature composite materials. For these fine-grained fibers, basic issues arise concerning grain growth and microstructural instability during composite fabrication and the resulting effects on the fiber's thermo-mechanical properties. To examine these issues, commercially available Nextel 610 (alumina) and Altex (alumina–silica) fibers were annealed at 1100 and 1300°C for up to 100 h in air. Changes in fiber microstructure, fiber tensile creep, and bend stress relaxation (BSR) that occurred with annealing were then determined. BSR tests were also used to compare as-received and annealed fibers to other polycrystalline oxide fibers. Annealing was shown to have a significant effect, particularly on the Altex fiber, and caused it to have increased creep resistance. |
| doi_str_mv | 10.1016/S0921-5093(97)00537-6 |
| format | Article |
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For these fine-grained fibers, basic issues arise concerning grain growth and microstructural instability during composite fabrication and the resulting effects on the fiber's thermo-mechanical properties. To examine these issues, commercially available Nextel 610 (alumina) and Altex (alumina–silica) fibers were annealed at 1100 and 1300°C for up to 100 h in air. Changes in fiber microstructure, fiber tensile creep, and bend stress relaxation (BSR) that occurred with annealing were then determined. BSR tests were also used to compare as-received and annealed fibers to other polycrystalline oxide fibers. Annealing was shown to have a significant effect, particularly on the Altex fiber, and caused it to have increased creep resistance.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/S0921-5093(97)00537-6</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Annealing effects ; Applied sciences ; Cross-disciplinary physics: materials science; rheology ; Deformation, plasticity, and creep ; Exact sciences and technology ; Grain growth ; Materials science ; Metals. Metallurgy ; Microstructural instability ; Physics ; Polycrystalline alumina-based fibers ; Powder metallurgy. Composite materials ; Production techniques ; Treatment of materials and its effects on microstructure and properties</subject><ispartof>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</title><description>Continuous-length polycrystalline aluminum oxide-based fibers are being considered as reinforcements for advanced high-temperature composite materials. For these fine-grained fibers, basic issues arise concerning grain growth and microstructural instability during composite fabrication and the resulting effects on the fiber's thermo-mechanical properties. To examine these issues, commercially available Nextel 610 (alumina) and Altex (alumina–silica) fibers were annealed at 1100 and 1300°C for up to 100 h in air. Changes in fiber microstructure, fiber tensile creep, and bend stress relaxation (BSR) that occurred with annealing were then determined. BSR tests were also used to compare as-received and annealed fibers to other polycrystalline oxide fibers. Annealing was shown to have a significant effect, particularly on the Altex fiber, and caused it to have increased creep resistance.</description><subject>Annealing effects</subject><subject>Applied sciences</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Deformation, plasticity, and creep</subject><subject>Exact sciences and technology</subject><subject>Grain growth</subject><subject>Materials science</subject><subject>Metals. Metallurgy</subject><subject>Microstructural instability</subject><subject>Physics</subject><subject>Polycrystalline alumina-based fibers</subject><subject>Powder metallurgy. 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Metallurgy</topic><topic>Microstructural instability</topic><topic>Physics</topic><topic>Polycrystalline alumina-based fibers</topic><topic>Powder metallurgy. Composite materials</topic><topic>Production techniques</topic><topic>Treatment of materials and its effects on microstructure and properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Goldsby, J.C</creatorcontrib><creatorcontrib>Yun, H.M</creatorcontrib><creatorcontrib>Morscher, G.N</creatorcontrib><creatorcontrib>DiCarlo, J.A</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. 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For these fine-grained fibers, basic issues arise concerning grain growth and microstructural instability during composite fabrication and the resulting effects on the fiber's thermo-mechanical properties. To examine these issues, commercially available Nextel 610 (alumina) and Altex (alumina–silica) fibers were annealed at 1100 and 1300°C for up to 100 h in air. Changes in fiber microstructure, fiber tensile creep, and bend stress relaxation (BSR) that occurred with annealing were then determined. BSR tests were also used to compare as-received and annealed fibers to other polycrystalline oxide fibers. Annealing was shown to have a significant effect, particularly on the Altex fiber, and caused it to have increased creep resistance.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0921-5093(97)00537-6</doi><tpages>6</tpages></addata></record> |
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| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 1998-02, Vol.242 (1), p.278-283 |
| issn | 0921-5093 1873-4936 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Annealing effects Applied sciences Cross-disciplinary physics: materials science rheology Deformation, plasticity, and creep Exact sciences and technology Grain growth Materials science Metals. Metallurgy Microstructural instability Physics Polycrystalline alumina-based fibers Powder metallurgy. Composite materials Production techniques Treatment of materials and its effects on microstructure and properties |
| title | Annealing effects on creep of polycrystalline alumina-based fibers |
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