Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy
Bcc-ordered B2 and fcc phases manifest three different orientation relationships (ORs) in the same microstructure: Kurdjumov–Sachs, Nishiyama–Wasserman and Pitsch. This unique microstructure was developed via conventional cold-rolling and subsequent annealing of an fcc-based Al0.3CoCrFeNi complex co...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-03-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21663831.2018.1426649 |
| _version_ | 1831719282704121856 |
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| author | Deep Choudhuri Shivakant Shukla Whitley B. Green Bharat Gwalani Victor Ageh Rajarshi Banerjee Rajiv S. Mishra |
| author_facet | Deep Choudhuri Shivakant Shukla Whitley B. Green Bharat Gwalani Victor Ageh Rajarshi Banerjee Rajiv S. Mishra |
| author_sort | Deep Choudhuri |
| collection | DOAJ |
| description | Bcc-ordered B2 and fcc phases manifest three different orientation relationships (ORs) in the same microstructure: Kurdjumov–Sachs, Nishiyama–Wasserman and Pitsch. This unique microstructure was developed via conventional cold-rolling and subsequent annealing of an fcc-based Al0.3CoCrFeNi complex concentrated alloy (CCA). The degeneracy in crystallographic ORs was caused by {111}⟨112⟩twins, on multiple {111}, from the prior cold-rolling step. Annealing produced B2 precipitates on all the major fcc slip-systems by heterogeneously nucleating B2 at twin-matrix interfaces and twin–twin intersections. Such a precipitation-hardenable microstructure is expected to increase the strength of fcc-based CCAs by effectively blocking 1/2⟨110⟩and 1/6⟨112⟩mobile dislocations. Impact statement Three different fcc-B2 orientation relationships (ORs) were observed for the first time in complex concentrated alloys. Such degenerate ORs in B2 precipitation can potentially block dislocation on multiple slip planes. |
| first_indexed | 2024-12-21T02:36:14Z |
| format | Article |
| id | doaj.art-574c28dffe424020ae3694ab9089a46d |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-12-21T02:36:14Z |
| publishDate | 2018-03-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-574c28dffe424020ae3694ab9089a46d2022-12-21T19:18:48ZengTaylor & Francis GroupMaterials Research Letters2166-38312018-03-016317117710.1080/21663831.2018.14266491426649Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloyDeep Choudhuri0Shivakant Shukla1Whitley B. Green2Bharat Gwalani3Victor Ageh4Rajarshi Banerjee5Rajiv S. Mishra6University of North TexasUniversity of North TexasUniversity of North TexasUniversity of North TexasUniversity of North TexasUniversity of North TexasUniversity of North TexasBcc-ordered B2 and fcc phases manifest three different orientation relationships (ORs) in the same microstructure: Kurdjumov–Sachs, Nishiyama–Wasserman and Pitsch. This unique microstructure was developed via conventional cold-rolling and subsequent annealing of an fcc-based Al0.3CoCrFeNi complex concentrated alloy (CCA). The degeneracy in crystallographic ORs was caused by {111}⟨112⟩twins, on multiple {111}, from the prior cold-rolling step. Annealing produced B2 precipitates on all the major fcc slip-systems by heterogeneously nucleating B2 at twin-matrix interfaces and twin–twin intersections. Such a precipitation-hardenable microstructure is expected to increase the strength of fcc-based CCAs by effectively blocking 1/2⟨110⟩and 1/6⟨112⟩mobile dislocations. Impact statement Three different fcc-B2 orientation relationships (ORs) were observed for the first time in complex concentrated alloys. Such degenerate ORs in B2 precipitation can potentially block dislocation on multiple slip planes.http://dx.doi.org/10.1080/21663831.2018.1426649Complex concentrated alloysprecipitation strengtheningbcc-ordered b2twinningphase transformations |
| spellingShingle | Deep Choudhuri Shivakant Shukla Whitley B. Green Bharat Gwalani Victor Ageh Rajarshi Banerjee Rajiv S. Mishra Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy Materials Research Letters Complex concentrated alloys precipitation strengthening bcc-ordered b2 twinning phase transformations |
| title | Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy |
| title_full | Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy |
| title_fullStr | Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy |
| title_full_unstemmed | Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy |
| title_short | Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy |
| title_sort | crystallographically degenerate b2 precipitation in a plastically deformed fcc based complex concentrated alloy |
| topic | Complex concentrated alloys precipitation strengthening bcc-ordered b2 twinning phase transformations |
| url | http://dx.doi.org/10.1080/21663831.2018.1426649 |
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