Thermo-mechanical grain refinement in gamma (γ) based TiAl intermetallics
The purpose of this study was to refine the grain structure of cast and powder material (PM) Ti–48Al–2Cr–2Nb, and improve the room temperature properties of this α 2+γ alloy. Thermo-mechanical grain refinement was investigated at 950 and 1050 °C for 50% deformation in cast material and at 50 and 75%...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2003-10, Vol.359 (1), p.168-177 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Usta, M Wolfe, H Duquette, D.J Stoloff, N.S Wright, R.N |
| description | The purpose of this study was to refine the grain structure of cast and powder material (PM) Ti–48Al–2Cr–2Nb, and improve the room temperature properties of this α
2+γ alloy. Thermo-mechanical grain refinement was investigated at 950 and 1050
°C for 50% deformation in cast material and at 50 and 75% deformation in the PM material. The grain size of the cast structure was reduced to 7–10 μm, whereas the grain size of the PM material decreased to submicron size. Room temperature compression tests revealed that the yield strength and the fracture stress of the alloys increase without an associated fracture energy loss. Submicron PM alloys showed intergranular fracture while as-received cast material exhibited cleavage fracture in room temperature tensile tests. |
| doi_str_mv | 10.1016/S0921-5093(03)00337-X |
| format | Article |
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°C for 50% deformation in cast material and at 50 and 75% deformation in the PM material. The grain size of the cast structure was reduced to 7–10 μm, whereas the grain size of the PM material decreased to submicron size. Room temperature compression tests revealed that the yield strength and the fracture stress of the alloys increase without an associated fracture energy loss. Submicron PM alloys showed intergranular fracture while as-received cast material exhibited cleavage fracture in room temperature tensile tests.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/S0921-5093(03)00337-X</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Cross-disciplinary physics: materials science; rheology ; Exact sciences and technology ; Fractures ; Materials science ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Metals. Metallurgy ; Other heat and thermomechanical treatments ; Physics ; Powder material ; Thermo-mechanical grain refinement ; Titanium Aluminide ; Treatment of materials and its effects on microstructure and properties</subject><ispartof>Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2003-10, Vol.359 (1), p.168-177</ispartof><rights>2003 Elsevier Science B.V.</rights><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c434t-9be8be39065a61d9fdb1a7d879ea0b3bc623631c81a1e20267c96810f2461eff3</citedby><cites>FETCH-LOGICAL-c434t-9be8be39065a61d9fdb1a7d879ea0b3bc623631c81a1e20267c96810f2461eff3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0921-5093(03)00337-X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,45974</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15135359$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Usta, M</creatorcontrib><creatorcontrib>Wolfe, H</creatorcontrib><creatorcontrib>Duquette, D.J</creatorcontrib><creatorcontrib>Stoloff, N.S</creatorcontrib><creatorcontrib>Wright, R.N</creatorcontrib><title>Thermo-mechanical grain refinement in gamma (γ) based TiAl intermetallics</title><title>Materials science & engineering. A, Structural materials : properties, microstructure and processing</title><description>The purpose of this study was to refine the grain structure of cast and powder material (PM) Ti–48Al–2Cr–2Nb, and improve the room temperature properties of this α
2+γ alloy. Thermo-mechanical grain refinement was investigated at 950 and 1050
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| identifier | ISSN: 0921-5093 |
| ispartof | Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2003-10, Vol.359 (1), p.168-177 |
| issn | 0921-5093 1873-4936 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology Fractures Materials science Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Other heat and thermomechanical treatments Physics Powder material Thermo-mechanical grain refinement Titanium Aluminide Treatment of materials and its effects on microstructure and properties |
| title | Thermo-mechanical grain refinement in gamma (γ) based TiAl intermetallics |
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