Microstructural strengthening and mechanical performance of Ti-bearing Al5Cr12Fe35Mn28Ni20 high-entropy alloy
Elkatatny, Sally; Abdelghany, Ahmed W.; Hamada, Atef; Chiba, Akihiko; Gepreel, Mohamed A.H. (2023-03-01)
Taylor & Francis
01.03.2023
Elkatatny S, Abdelghany AW, Hamada A, Chiba A, Gepreel MAH. Microstructural strengthening and mechanical performance of Ti-bearing Al5Cr12Fe35Mn28Ni20 high-entropy alloy. Materials Science and Technology. 2023;39(4):501-508. doi:10.1080/02670836.2022.2123398
https://rightsstatements.org/vocab/InC/1.0/
Elkatatny S, Abdelghany AW, Hamada A, Chiba A, Gepreel MAH., Microstructural strengthening and mechanical performance of Ti-bearing Al5Cr12Fe35Mn28Ni20 high-entropy alloy, Materials science and technology (Volume 39 and Issue 4) pp. 501-508. Copyright © 2022 Institute of Materials, Minerals and Mining. DOI: 10.1080/02670836.2022.2123398.
https://rightsstatements.org/vocab/InC/1.0/
Elkatatny S, Abdelghany AW, Hamada A, Chiba A, Gepreel MAH., Microstructural strengthening and mechanical performance of Ti-bearing Al5Cr12Fe35Mn28Ni20 high-entropy alloy, Materials science and technology (Volume 39 and Issue 4) pp. 501-508. Copyright © 2022 Institute of Materials, Minerals and Mining. DOI: 10.1080/02670836.2022.2123398.
https://rightsstatements.org/vocab/InC/1.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202504252929
https://urn.fi/URN:NBN:fi:oulu-202504252929
Tiivistelmä
Abstract
In the present study, non-equiatomic AlCrFeMnx−TiNi high-entropy alloys bearing cost-effective elements were developed in light of enhancing mechanical strength. The Al5Cr12Fe35Mn28Ni20 HEA was used as a reference. However, the HEA containing Ti (Ti-HEA) was designed with a composition of Al5Cr12Fe35Mn23Ni20Ti5. The microstructural characteristics were studied by X-ray diffraction, electron probe micro-analysis, and electron backscattering diffraction. Subsequently, the mechanical properties were determined using micro-hardness, tensile and compression tests. Whereas the Ti-free HEA displayed a single FCC structure, a multi-phase structure was observed in the Ti-HEA. The mechanical tests showed that the Ti element significantly enhanced the strength. The strengthening effect was more intense during compression loading as the Ti-HEA exhibited superior combination of compressive strength and ductility (2.35GPa at 50% strain without fracture).
In the present study, non-equiatomic AlCrFeMnx−TiNi high-entropy alloys bearing cost-effective elements were developed in light of enhancing mechanical strength. The Al5Cr12Fe35Mn28Ni20 HEA was used as a reference. However, the HEA containing Ti (Ti-HEA) was designed with a composition of Al5Cr12Fe35Mn23Ni20Ti5. The microstructural characteristics were studied by X-ray diffraction, electron probe micro-analysis, and electron backscattering diffraction. Subsequently, the mechanical properties were determined using micro-hardness, tensile and compression tests. Whereas the Ti-free HEA displayed a single FCC structure, a multi-phase structure was observed in the Ti-HEA. The mechanical tests showed that the Ti element significantly enhanced the strength. The strengthening effect was more intense during compression loading as the Ti-HEA exhibited superior combination of compressive strength and ductility (2.35GPa at 50% strain without fracture).
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