Microstructure and Mechanical Properties of an Al-Li-Mg-Sc-Zr Alloy Subjected to ECAP
The effect of post-deformation solution treatment followed by water quenching and artificial aging on microstructure and mechanical properties of an Al-Li-Mg-Sc-Zr alloy subjected to equal-channel angular pressing (ECAP) was examined. It was shown that the deformed microstructure produced by ECAP re...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-10-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/6/11/254 |
| _version_ | 1818932961347633152 |
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| author | Anna Mogucheva Rustam Kaibyshev |
| author_facet | Anna Mogucheva Rustam Kaibyshev |
| author_sort | Anna Mogucheva |
| collection | DOAJ |
| description | The effect of post-deformation solution treatment followed by water quenching and artificial aging on microstructure and mechanical properties of an Al-Li-Mg-Sc-Zr alloy subjected to equal-channel angular pressing (ECAP) was examined. It was shown that the deformed microstructure produced by ECAP remains essentially unchanged under solution treatment. However, extensive grain refinement owing to ECAP processing significantly affects the precipitation sequence during aging. In the aluminum-lithium alloy with ultrafine-grained (UFG) microstructure, the coarse particles of the S1-phase (Al2LiMg) precipitate on high-angle boundaries; no formation of nanoscale coherent dispersoids of the δ′-phase (Al3Li) occurs within grain interiors. Increasing the number of high-angle boundaries leads to an increasing portion of the S1-phase. As a result, no significant increase in strength occurs despite extensive grain refinement by ECAP. |
| first_indexed | 2024-12-20T04:40:48Z |
| format | Article |
| id | doaj.art-8a890f9a4a9040a78de8f14453a9998a |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-20T04:40:48Z |
| publishDate | 2016-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-8a890f9a4a9040a78de8f14453a9998a2022-12-21T19:53:07ZengMDPI AGMetals2075-47012016-10-0161125410.3390/met6110254met6110254Microstructure and Mechanical Properties of an Al-Li-Mg-Sc-Zr Alloy Subjected to ECAPAnna Mogucheva0Rustam Kaibyshev1Laboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod State University, 85 Pobedy, Belgorod 308015, RussiaLaboratory of Mechanical Properties of Nanostructured Materials and Superalloys, Belgorod State University, 85 Pobedy, Belgorod 308015, RussiaThe effect of post-deformation solution treatment followed by water quenching and artificial aging on microstructure and mechanical properties of an Al-Li-Mg-Sc-Zr alloy subjected to equal-channel angular pressing (ECAP) was examined. It was shown that the deformed microstructure produced by ECAP remains essentially unchanged under solution treatment. However, extensive grain refinement owing to ECAP processing significantly affects the precipitation sequence during aging. In the aluminum-lithium alloy with ultrafine-grained (UFG) microstructure, the coarse particles of the S1-phase (Al2LiMg) precipitate on high-angle boundaries; no formation of nanoscale coherent dispersoids of the δ′-phase (Al3Li) occurs within grain interiors. Increasing the number of high-angle boundaries leads to an increasing portion of the S1-phase. As a result, no significant increase in strength occurs despite extensive grain refinement by ECAP.http://www.mdpi.com/2075-4701/6/11/254aluminum alloysequal channel angular pressingthermomechanical processingmicrostructuremechanical propertiesprecipitation |
| spellingShingle | Anna Mogucheva Rustam Kaibyshev Microstructure and Mechanical Properties of an Al-Li-Mg-Sc-Zr Alloy Subjected to ECAP Metals aluminum alloys equal channel angular pressing thermomechanical processing microstructure mechanical properties precipitation |
| title | Microstructure and Mechanical Properties of an Al-Li-Mg-Sc-Zr Alloy Subjected to ECAP |
| title_full | Microstructure and Mechanical Properties of an Al-Li-Mg-Sc-Zr Alloy Subjected to ECAP |
| title_fullStr | Microstructure and Mechanical Properties of an Al-Li-Mg-Sc-Zr Alloy Subjected to ECAP |
| title_full_unstemmed | Microstructure and Mechanical Properties of an Al-Li-Mg-Sc-Zr Alloy Subjected to ECAP |
| title_short | Microstructure and Mechanical Properties of an Al-Li-Mg-Sc-Zr Alloy Subjected to ECAP |
| title_sort | microstructure and mechanical properties of an al li mg sc zr alloy subjected to ecap |
| topic | aluminum alloys equal channel angular pressing thermomechanical processing microstructure mechanical properties precipitation |
| url | http://www.mdpi.com/2075-4701/6/11/254 |
| work_keys_str_mv | AT annamogucheva microstructureandmechanicalpropertiesofanallimgsczralloysubjectedtoecap AT rustamkaibyshev microstructureandmechanicalpropertiesofanallimgsczralloysubjectedtoecap |