The role of twinning and nano-crystalline ? phase on the fatigue behavior of the metastable ß Ti-15Mo alloy
This work evaluated in depth the fatigue and fracture behavior of the metastable β Ti-15Mo alloy considering the presence of deformation twins and athermal nano-crystalline ω phase in the microstructure. Regardless of the microstructural condition studied, the as-received and the solution treated an...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2018-06, Vol.729, p.323 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Campanelli, Leonardo Contri Coury, Francisco Gil Guo, Yaofeng Carvalho Pereira da Silva, Paulo Sergio Kaufman, Michael Joseph Bolfarini, Claudemiro |
| description | This work evaluated in depth the fatigue and fracture behavior of the metastable β Ti-15Mo alloy considering the presence of deformation twins and athermal nano-crystalline ω phase in the microstructure. Regardless of the microstructural condition studied, the as-received and the solution treated and quenched materials, ω phase remained unchanged, guaranteeing the static mechanical properties at acceptable levels. The mechanism of fatigue fracture was related to the existence of twins and maximum shear stress planes near the direction of screw dislocation motion in the BCC structure. The significant amount of deformation twins in the initial microstructure did not alter the fatigue limit, because the solution treated and quenched material unexpectedly developed twins during the fatigue test. |
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Regardless of the microstructural condition studied, the as-received and the solution treated and quenched materials, ω phase remained unchanged, guaranteeing the static mechanical properties at acceptable levels. The mechanism of fatigue fracture was related to the existence of twins and maximum shear stress planes near the direction of screw dislocation motion in the BCC structure. The significant amount of deformation twins in the initial microstructure did not alter the fatigue limit, because the solution treated and quenched material unexpectedly developed twins during the fatigue test.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><language>eng</language><publisher>Lausanne: Elsevier BV</publisher><subject>Alloys ; Crack propagation ; Crystal structure ; Crystallinity ; Deformation mechanisms ; Fatigue failure ; Fatigue limit ; Fatigue tests ; Mechanical properties ; Metal fatigue ; Microstructure ; Nanocrystals ; Quenching ; Screw dislocations ; Shear stress ; Titanium base alloys ; Twinning</subject><ispartof>Materials science & engineering. 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A, Structural materials : properties, microstructure and processing</title><description>This work evaluated in depth the fatigue and fracture behavior of the metastable β Ti-15Mo alloy considering the presence of deformation twins and athermal nano-crystalline ω phase in the microstructure. Regardless of the microstructural condition studied, the as-received and the solution treated and quenched materials, ω phase remained unchanged, guaranteeing the static mechanical properties at acceptable levels. The mechanism of fatigue fracture was related to the existence of twins and maximum shear stress planes near the direction of screw dislocation motion in the BCC structure. The significant amount of deformation twins in the initial microstructure did not alter the fatigue limit, because the solution treated and quenched material unexpectedly developed twins during the fatigue test.</description><subject>Alloys</subject><subject>Crack propagation</subject><subject>Crystal structure</subject><subject>Crystallinity</subject><subject>Deformation mechanisms</subject><subject>Fatigue failure</subject><subject>Fatigue limit</subject><subject>Fatigue tests</subject><subject>Mechanical properties</subject><subject>Metal fatigue</subject><subject>Microstructure</subject><subject>Nanocrystals</subject><subject>Quenching</subject><subject>Screw dislocations</subject><subject>Shear stress</subject><subject>Titanium base alloys</subject><subject>Twinning</subject><issn>0921-5093</issn><issn>1873-4936</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNqNjEsKwjAURYMoWD97eOA4kDRG7ciBKE6cdS6ppjYSXzRJFVfjYtyYQVyAd3Lhfk6HZHwxF3RaiFmXZKzIOZWsEH0yCOHMGONTJjNiy0aDd1aDqyE-DKLBEyg8Aip09OCfISprDWpYwrVRIQ0RYjrVKppTq6HSjbob57-AlF90VOlTJeT7BaWhXO4cJIZ7jkivVjbo8c-HZLJZl6stvXp3a3WI-7NrPaZqn_OkXEjJxH-rD0_VSbE</recordid><startdate>20180627</startdate><enddate>20180627</enddate><creator>Campanelli, Leonardo Contri</creator><creator>Coury, Francisco Gil</creator><creator>Guo, Yaofeng</creator><creator>Carvalho Pereira da Silva, Paulo Sergio</creator><creator>Kaufman, Michael Joseph</creator><creator>Bolfarini, Claudemiro</creator><general>Elsevier BV</general><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20180627</creationdate><title>The role of twinning and nano-crystalline ? phase on the fatigue behavior of the metastable ß Ti-15Mo alloy</title><author>Campanelli, Leonardo Contri ; Coury, Francisco Gil ; Guo, Yaofeng ; Carvalho Pereira da Silva, Paulo Sergio ; Kaufman, Michael Joseph ; Bolfarini, Claudemiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_21111235503</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Alloys</topic><topic>Crack propagation</topic><topic>Crystal structure</topic><topic>Crystallinity</topic><topic>Deformation mechanisms</topic><topic>Fatigue failure</topic><topic>Fatigue limit</topic><topic>Fatigue tests</topic><topic>Mechanical properties</topic><topic>Metal fatigue</topic><topic>Microstructure</topic><topic>Nanocrystals</topic><topic>Quenching</topic><topic>Screw dislocations</topic><topic>Shear stress</topic><topic>Titanium base alloys</topic><topic>Twinning</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Campanelli, Leonardo Contri</creatorcontrib><creatorcontrib>Coury, Francisco Gil</creatorcontrib><creatorcontrib>Guo, Yaofeng</creatorcontrib><creatorcontrib>Carvalho Pereira da Silva, Paulo Sergio</creatorcontrib><creatorcontrib>Kaufman, Michael Joseph</creatorcontrib><creatorcontrib>Bolfarini, Claudemiro</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. 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| identifier | ISSN: 0921-5093 |
| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2018-06, Vol.729, p.323 |
| issn | 0921-5093 1873-4936 |
| language | eng |
| recordid | cdi_proquest_journals_2111123550 |
| source | Elsevier ScienceDirect Journals |
| subjects | Alloys Crack propagation Crystal structure Crystallinity Deformation mechanisms Fatigue failure Fatigue limit Fatigue tests Mechanical properties Metal fatigue Microstructure Nanocrystals Quenching Screw dislocations Shear stress Titanium base alloys Twinning |
| title | The role of twinning and nano-crystalline ? phase on the fatigue behavior of the metastable ß Ti-15Mo alloy |
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