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Tailoring the microstructure, mechanical properties, and electrical conductivity of Cu–0.7Mg alloy via Ca addition, heat treatment, and severe plastic deformation.
- Source :
- Archives of Civil & Mechanical Engineering (Elsevier Science); Apr2024, Vol. 24 Issue 2, p1-20, 20p
- Publication Year :
- 2024
-
Abstract
- The effects of 0.1 wt.% Ca addition, heat treatment, and SPD processing using the MaxStrain module of the Gleeble thermomechanical simulator on the microstructure, mechanical properties, and electrical conductivity of Cu–0.7Mg (wt.%) alloy were investigated in this work. The binary alloy exhibited a single-phase microstructure, whereas the ternary alloy featured uniform dispersion of Cu<subscript>5</subscript>Ca intermetallic particles inside the grains as well as on grain boundaries. These particles resulted in an average hardness that was 33% higher than that of the binary alloy, as well as 13% higher yield strength and 13% higher ultimate tensile strength. The heat treatment process not only enhanced the yield strength and ultimate tensile strength of the samples, but also resulted in the partial spheroidization of Cu<subscript>5</subscript>Ca particles within the microstructure of the ternary alloy, resulting in its improved ductility. Following MaxStrain processing, ternary samples exhibited a smaller grain size and a higher fraction of high-angle grain boundaries than binary samples, which was attributed to the vital role of Cu<subscript>5</subscript>Ca intermetallic particles in hindering the dislocation motion during deformation. MaxStrain-processed samples exhibited marginally lower electrical conductivities than their initial counterparts; yet, all MaxStrain-processed samples satisfied the electrical conductivity threshold for classification as HSHC Cu alloys. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16449665
- Volume :
- 24
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Archives of Civil & Mechanical Engineering (Elsevier Science)
- Publication Type :
- Academic Journal
- Accession number :
- 176082236
- Full Text :
- https://doi.org/10.1007/s43452-024-00890-0