Tension-compression fatigue of an oxide/oxide ceramic composite at elevated temperature
Tension-compression fatigue behavior of an oxide-oxide ceramic-matrix composite was investigated at 1200°C in air and in steam. The composite is comprised of an alumina matrix reinforced with Nextel™720 alumina-mullite fibers woven in an eight harness satin weave (8HSW). The composite has no interfa...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2016-04, Vol.659, p.270-277 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Ruggles-Wrenn, M.B. Lanser, R.L. |
| description | Tension-compression fatigue behavior of an oxide-oxide ceramic-matrix composite was investigated at 1200°C in air and in steam. The composite is comprised of an alumina matrix reinforced with Nextel™720 alumina-mullite fibers woven in an eight harness satin weave (8HSW). The composite has no interface between the fiber and matrix, and relies on the porous matrix for flaw tolerance. Tension-compression fatigue behavior was studied for fatigue stresses ranging from 60 to 120MPa at a frequency of 1.0Hz. The R ratio (minimum stress to maximum stress) was −1.0. Fatigue run-out was defined as 105 cycles and was achieved at 80MPa in air and at 70MPa in steam. Steam reduced fatigue lives by an order of magnitude. Specimens that achieved fatigue run-out were subjected to tensile tests to failure to characterize the retained tensile properties. Specimens subjected to prior fatigue in air retained 100% of their tensile strength. The steam environment severely degraded tensile properties. Tension-compression fatigue was considerably more damaging than tension-tension fatigue. Composite microstructure, as well as damage and failure mechanisms were investigated. |
| doi_str_mv | 10.1016/j.msea.2016.02.057 |
| format | Article |
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The composite is comprised of an alumina matrix reinforced with Nextel™720 alumina-mullite fibers woven in an eight harness satin weave (8HSW). The composite has no interface between the fiber and matrix, and relies on the porous matrix for flaw tolerance. Tension-compression fatigue behavior was studied for fatigue stresses ranging from 60 to 120MPa at a frequency of 1.0Hz. The R ratio (minimum stress to maximum stress) was −1.0. Fatigue run-out was defined as 105 cycles and was achieved at 80MPa in air and at 70MPa in steam. Steam reduced fatigue lives by an order of magnitude. Specimens that achieved fatigue run-out were subjected to tensile tests to failure to characterize the retained tensile properties. Specimens subjected to prior fatigue in air retained 100% of their tensile strength. The steam environment severely degraded tensile properties. Tension-compression fatigue was considerably more damaging than tension-tension fatigue. 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A, Structural materials : properties, microstructure and processing</title><description>Tension-compression fatigue behavior of an oxide-oxide ceramic-matrix composite was investigated at 1200°C in air and in steam. The composite is comprised of an alumina matrix reinforced with Nextel™720 alumina-mullite fibers woven in an eight harness satin weave (8HSW). The composite has no interface between the fiber and matrix, and relies on the porous matrix for flaw tolerance. Tension-compression fatigue behavior was studied for fatigue stresses ranging from 60 to 120MPa at a frequency of 1.0Hz. The R ratio (minimum stress to maximum stress) was −1.0. Fatigue run-out was defined as 105 cycles and was achieved at 80MPa in air and at 70MPa in steam. Steam reduced fatigue lives by an order of magnitude. Specimens that achieved fatigue run-out were subjected to tensile tests to failure to characterize the retained tensile properties. Specimens subjected to prior fatigue in air retained 100% of their tensile strength. The steam environment severely degraded tensile properties. Tension-compression fatigue was considerably more damaging than tension-tension fatigue. Composite microstructure, as well as damage and failure mechanisms were investigated.</description><subject>Ceramic-matrix composites (CMCs)</subject><subject>Crack propagation</subject><subject>Damage</subject><subject>Fatigue</subject><subject>Fatigue (materials)</subject><subject>Fatigue failure</subject><subject>Fibers</subject><subject>Fractography</subject><subject>High-temperature properties</subject><subject>Mechanical properties</subject><subject>Oxides</subject><subject>Stresses</subject><subject>Tensile properties</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kM1LxDAQxYMouH78A55y9NLuJGnTFrzI4hcseFnxGLLpVLK0zZqki_73pq5nLzNv4L2B9yPkhkHOgMnlLh8C6pwnnQPPoaxOyILVlciKRshTsoCGs6yERpyTixB2AMAKKBfkfYNjsG7MjBv2HsOsaaej_ZiQuo7qkbov2-Lyd1KDXg_W0Nntgo1IdaTY40FHbGnEYZ8McfJ4Rc463Qe8_tuX5O3xYbN6ztavTy-r-3VmhBAxM6Xh24o3TEqhtdElVDydberRYt1s0YDuDHSy0RKLGqqaF9C0QlYlMlmAuCS3x7977z4nDFENNhjsez2im4JiNdRQNlLwZOVHq_EuBI-d2ns7aP-tGKiZotqpmaKaKSrgKlFMobtjCFOJg0WvgrE4GmytRxNV6-x_8R-x_Xvb</recordid><startdate>20160406</startdate><enddate>20160406</enddate><creator>Ruggles-Wrenn, M.B.</creator><creator>Lanser, R.L.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20160406</creationdate><title>Tension-compression fatigue of an oxide/oxide ceramic composite at elevated temperature</title><author>Ruggles-Wrenn, M.B. ; Lanser, R.L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c333t-c5c2b7291663aaca5072729d016de89bec0afc0f69a6e480782409d3675e16403</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Ceramic-matrix composites (CMCs)</topic><topic>Crack propagation</topic><topic>Damage</topic><topic>Fatigue</topic><topic>Fatigue (materials)</topic><topic>Fatigue failure</topic><topic>Fibers</topic><topic>Fractography</topic><topic>High-temperature properties</topic><topic>Mechanical properties</topic><topic>Oxides</topic><topic>Stresses</topic><topic>Tensile properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ruggles-Wrenn, M.B.</creatorcontrib><creatorcontrib>Lanser, R.L.</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ruggles-Wrenn, M.B.</au><au>Lanser, R.L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tension-compression fatigue of an oxide/oxide ceramic composite at elevated temperature</atitle><jtitle>Materials science & engineering. A, Structural materials : properties, microstructure and processing</jtitle><date>2016-04-06</date><risdate>2016</risdate><volume>659</volume><spage>270</spage><epage>277</epage><pages>270-277</pages><issn>0921-5093</issn><eissn>1873-4936</eissn><abstract>Tension-compression fatigue behavior of an oxide-oxide ceramic-matrix composite was investigated at 1200°C in air and in steam. The composite is comprised of an alumina matrix reinforced with Nextel™720 alumina-mullite fibers woven in an eight harness satin weave (8HSW). The composite has no interface between the fiber and matrix, and relies on the porous matrix for flaw tolerance. Tension-compression fatigue behavior was studied for fatigue stresses ranging from 60 to 120MPa at a frequency of 1.0Hz. The R ratio (minimum stress to maximum stress) was −1.0. Fatigue run-out was defined as 105 cycles and was achieved at 80MPa in air and at 70MPa in steam. Steam reduced fatigue lives by an order of magnitude. Specimens that achieved fatigue run-out were subjected to tensile tests to failure to characterize the retained tensile properties. Specimens subjected to prior fatigue in air retained 100% of their tensile strength. The steam environment severely degraded tensile properties. Tension-compression fatigue was considerably more damaging than tension-tension fatigue. Composite microstructure, as well as damage and failure mechanisms were investigated.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.msea.2016.02.057</doi><tpages>8</tpages></addata></record> |
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| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2016-04, Vol.659, p.270-277 |
| issn | 0921-5093 1873-4936 |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Ceramic-matrix composites (CMCs) Crack propagation Damage Fatigue Fatigue (materials) Fatigue failure Fibers Fractography High-temperature properties Mechanical properties Oxides Stresses Tensile properties |
| title | Tension-compression fatigue of an oxide/oxide ceramic composite at elevated temperature |
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