Advancing Duplex Stainless Steel Microstructure: Synergistic Ferrite Grain Refinement and Austenite Formation Through Permanent Magnet Stirring

Advancing Duplex Stainless Steel Microstructure: Synergistic Ferrite Grain Refinement and Austenite Formation Through Permanent Magnet Stirring

The effect of permanent magnet stirring (PMS) on the as-cast microstructure of duplex stainless steel was investigated. It is found that high-speed PMS induces turbulent flow, leading to ferrite refinement and the emergence of numerous substructures, further fostering austenite formation. Additional...

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Veröffentlicht in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2024-07, Vol.55 (7), p.2163-2168
Hauptverfasser: Zeng, Jie, Yang, Renyi, Wang, Wanlin, Li, Mingang, Peng, Jianfei, Yang, Dong, Yao, Jingjing, Zhu, Chenyang
Format: Artikel
Sprache:eng
Schlagworte:
Austenite
Brief Communication
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cooling
Corrosion resistance
Duplex stainless steels
Electromagnetic forces
Ferrite
Grain refinement
Grain size
Materials Science
Mechanical properties
Metallic Materials
Metallurgy
Microscopy
Microstructure
Morphology
Nanotechnology
Permanent magnets
Solidification
Stainless steel
Stirring
Stress concentration
Structural Materials
Surfaces and Interfaces
Thin Films
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Zusammenfassung:The effect of permanent magnet stirring (PMS) on the as-cast microstructure of duplex stainless steel was investigated. It is found that high-speed PMS induces turbulent flow, leading to ferrite refinement and the emergence of numerous substructures, further fostering austenite formation. Additionally, its intense electromagnetic force aids in the diffusion of Cr, Mo, Ni, etc., boosting austenite growth. Consequently, it simultaneously achieves enhanced ferrite refinement and a substantial increase in the fraction of austenite.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-024-07417-5