Restoration Mechanisms at Moderate Temperatures for As-Cast ZK40 Magnesium Alloys Modified with Individual Ca and Gd Additions

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Autor(es): dc.contributorChristian Doppler Lab Design High Performance All-
Autor(es): dc.contributorGraz Univ Technol-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de Viçosa (UFV)-
Autor(es): dc.contributorHelmholtz Zentrum Geesthacht-
Autor(es): dc.contributorBrunel Univ London-
Autor(es): dc.creatorBuzolin, Ricardo Henrique-
Autor(es): dc.creatorMoreno Guimaraes, Leandro Henrique-
Autor(es): dc.creatorAvila Diaz, Julian Arnaldo [UNESP]-
Autor(es): dc.creatorSilva, Erenilton Pereira da-
Autor(es): dc.creatorTolnai, Domonkos-
Autor(es): dc.creatorMendis, Chamini L.-
Autor(es): dc.creatorHort, Norbert-
Autor(es): dc.creatorPinto, Haroldo Cavalcanti-
Data de aceite: dc.date.accessioned2022-02-22T00:55:14Z-
Data de disponibilização: dc.date.available2022-02-22T00:55:14Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/cryst10121140-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/209048-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/209048-
Descrição: dc.descriptionThe deformation behaviour of as-cast ZK40 alloys modified with individual additions of Ca and Gd is investigated at 250 degrees C and 300 degrees C. Compression tests were carried out at 0.0001 s(-1) and 0.001 s(-1) using a modified Gleeble system during in-situ synchrotron radiation diffraction experiments. The deformation mechanisms are corroborated by post-mortem investigations using scanning electron microscopy combined with electron backscattered diffraction measurements. The restoration mechanisms in alpha-Mg are listed as follows: the formation of misorientation spread within alpha-Mg, the formation of low angle grain boundaries via dynamic recovery, twinning, as well as dynamic recrystallisation. The Gd and Ca additions increase the flow stress of the ZK40, which is more evident at 0.001 s(-1) and 300 degrees C. Dynamic recovery is the predominant restoration mechanism in all alloys. Continuous dynamic recrystallisation only occurs in the ZK40 at 250 degrees C, competing with discontinuous dynamic recrystallisation. Discontinuous dynamic recrystallisation occurs for the ZK40 and ZK40-Gd. The Ca addition hinders discontinuous dynamic recrystallisation for the investigated temperatures and up to the local achieved strain. Gd addition forms a semi-continuous network of intermetallic compounds along the grain boundaries that withstand the load until their fragmentation, retarding discontinuous dynamic recrystallisation.-
Descrição: dc.descriptionChristian Doppler Forschungsgesellschaft-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionGraz University of Technology-
Descrição: dc.descriptionChristian Doppler Lab Design High Performance All, A-8010 Graz, Austria-
Descrição: dc.descriptionGraz Univ Technol, Inst Mat Sci Joining & Forming, A-8010 Graz, Austria-
Descrição: dc.descriptionUniv Sao Paulo, Dept Mat Engn, BR-13563120 Sao Carlos, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Campus Sao Joao da Boa Vista, BR-13876750 Sao Joao Da Boa Vista, Brazil-
Descrição: dc.descriptionFed Univ Vales Jequitinhonha & Mucuri UFVJM, Inst Engn Sci & Technol IECT, BR-39440000 Janauba, Brazil-
Descrição: dc.descriptionHelmholtz Zentrum Geesthacht, Magnesium Innovat Ctr, D-21502 Geesthacht, Germany-
Descrição: dc.descriptionBrunel Univ London, Brunel Ctr Adv Solidificat Technol, Uxbridge UB8 3PH, Middx, England-
Descrição: dc.descriptionSao Paulo State Univ, Campus Sao Joao da Boa Vista, BR-13876750 Sao Joao Da Boa Vista, Brazil-
Descrição: dc.descriptionCAPES: 88882.180165/2018-01-
Descrição: dc.descriptionCNPq: 150215/2016-9-
Formato: dc.format22-
Idioma: dc.languageen-
Publicador: dc.publisherMdpi-
Relação: dc.relationCrystals-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectmagnesium alloys-
Palavras-chave: dc.subjectdeformation behaviour-
Palavras-chave: dc.subjectrestoration mechanisms-
Palavras-chave: dc.subjectelectron microscopy-
Palavras-chave: dc.subjectcharacterisation-
Palavras-chave: dc.subjectin-situ diffraction-
Título: dc.titleRestoration Mechanisms at Moderate Temperatures for As-Cast ZK40 Magnesium Alloys Modified with Individual Ca and Gd Additions-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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