Superplastic Behavior in High-Pressure Torsion-Processed Mo7.5Fe55Co18Cr12.5Ni7 Medium-Entropy Alloy

In the present study, superplasticity of high-pressure torsion-processed non-equiatomic Mo 7.5 Co 18 Cr 12.5 Fe 55 Ni 7 medium-entropy alloy with nanograins was investigated. The superplastic elongation of 505 pct was achieved at a temperature of 800 °C and a low strain rate. The precipitation of th...

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Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2021, Vol.52 (1), p.1-7
Hauptverfasser:	Nguyen, Nhung Thi-Cam, Asghari-Rad, Peyman, Bae, Jae Wung, Sathiyamoorthi, Praveen, Kim, Hyoung Seop
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloys Characterization and Evaluation of Materials Chemistry and Materials Science Elongation Entropy Grain boundary migration Innovations in High Entropy Alloys and Bulk Metallic Glasses in Honor of Peter K. Liaw Materials Science Medium entropy alloys Metallic Materials Mu phase Nanotechnology Strain rate Structural Materials Superplasticity Surfaces and Interfaces Thin Films Topical Collection: Innovations in High Entropy Alloys and Bulk Metallic Glasses
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Zusammenfassung:	In the present study, superplasticity of high-pressure torsion-processed non-equiatomic Mo 7.5 Co 18 Cr 12.5 Fe 55 Ni 7 medium-entropy alloy with nanograins was investigated. The superplastic elongation of 505 pct was achieved at a temperature of 800 °C and a low strain rate. The precipitation of the μ phase enriched with Mo hinders the grain boundary migration and also acts as the origin for cavity and crack formation.
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-020-06033-3