Utilize este identificador para referenciar este registo: http://hdl.handle.net/10362/99912
Título: Gas tungsten arc welding of as-rolled CrMnFeCoNi high entropy alloy
Autor: Oliveira, J. P.
Curado, T. M.
Zeng, Z.
Lopes, J. G.
Rossinyol, Emma
Park, Jeong Min
Schell, N.
Braz Fernandes, F. M.
Kim, Hyoung Seop
Palavras-chave: CrMnFeCoNi
Gas tungsten arc welding
High entropy alloys
Mechanical testing
Recovery
Synchrotron X-ray diffraction
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Data: Abr-2020
Citação: Oliveira, J. P., Curado, T. M., Zeng, Z., Lopes, J. G., Rossinyol, E., Park, J. M., Schell, N., Braz Fernandes, F. M., & Kim, H. S. (2020). Gas tungsten arc welding of as-rolled CrMnFeCoNi high entropy alloy. Materials & Design, 189, Article 108505. https://doi.org/10.1016/j.matdes.2020.108505
Resumo: High entropy alloys have emerged as novel engineering alloys with remarkable mechanical properties in a wide range of temperatures. Among the several high entropy alloys that were already described, the equiatomic CrMnFeCoNi alloy is the most studied one. In this work, gas tungsten arc welding of as-rolled CrMnFeCoNi high entropy alloy sheets was performed. The microstructural characterization encompassed the use of electron microscopy, including electron backscattered diffraction, synchrotron X-ray diffraction analysis, microhardness testing and mechanical evaluation. A comprehensive description of the microstructural evolution, including texture and microstrain determination, of the joint is presented and discussed. Upon mechanical testing, the joints systematically failed in the fusion zone due. The large grain size and low hardness of this region justifies the failure location. The joints' mechanical behaviour is correlated with the material microstructure.
Descrição: Fundacao para a Ciencia e Tecnologia (FCT)- project UID/EMS/00667/2019 (UNIDEMI). FMBF acknowledges funding of CENIMAT by FEDER through the program COMPETE 2020 and National Funds through FCT-Portuguese Foundation for Science and Technology, under the project UID/CTM/50025/2019 and FCT/MCTES. This work was supported by the Future Material Discovery Project of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT of Korea (NRF-2016M3D1A1023383). NFFA-Europe Transnational Access Activity (project reference Nf-20010136 EC and ID-806).
Peer review: yes
URI: http://hdl.handle.net/10362/99912
DOI: https://doi.org/10.1016/j.matdes.2020.108505
ISSN: 0264-1275
Aparece nas colecções:FCT: DEMI - Artigos em revista internacional com arbitragem científica

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