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Casting Fe-Al-based intermetallics microalloyed with Li and Ag

info:eu-repo/semantics/openAccess ;ISSN: 0884-2914 ;EISSN: 2044-5326 ;DOI: 10.1557/jmr.2016.249

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Title:
Casting Fe-Al-based intermetallics microalloyed with Li and Ag
Author: Villagomez Galindo, Miguel ; Carbajal G. Carbajal-De la Torre, G ; Romo Castañeda, J.C ; Bedolla Jacuinde, A ; González Rojas, Hernan Alberto ; Espinosa Medina, M.A
Subjects: Aliatges ; Alloys ; Casting ; Ductility ; Enginyeria dels materials ; Intermetallics ; Microestructura ; Microstructure ; Propietats tèrmiques ; Tensile strength ; Thermal properties ; Àrees temàtiques de la UPC
Description: The effect on the mechanical properties at room temperature of Li and Ag additions to the Fe–Al (40 at.%)-based alloy produced by conventional casting were evaluated in this work. Alloying elements were added into a previously molted Fe–(40 at.%) aluminum-based alloy, stirred, and then cast into sand molds to directly produce tensile specimens. To determine the mechanical properties, tensile tests and hardness measurements were performed. The additions of both Ag and Li showed an increase in ductility and tensile strength of the intermetallic alloys. In addition, hardness was substantially increased with the Li addition. Lithium additions promoted a solid solution hardening, whereas 3 at.% of Ag additions promoted ductility due to a microstructural modification and to the formation of a soft Ag 3 Al phase. Characterization by both optical and electronic microscopy, energy dispersive spectroscopy microanalysis, and x-ray diffraction supported the mechanical characterization. Peer Reviewed
Creation Date: 2016
Language: English
Identifier: ISSN: 0884-2914
EISSN: 2044-5326
DOI: 10.1557/jmr.2016.249
Source: Recercat
ProQuest Central

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Casting Fe-Al-based intermetallics microalloyed with Li and Ag

info:eu-repo/semantics/openAccess ;ISSN: 0884-2914 ;EISSN: 2044-5326 ;DOI: 10.1557/jmr.2016.249

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