Microstructure, hardness, and wear resistance of annealed Fe-based bulk metallic glasses by spark plasma sintering

Aiming at the issues of small critical size and low glass forming ability of Fe-based amorphous alloys, this work focuses on solving the problem of preparing both large size and excellent properties. The highly dense FeCrMoBC bulk metallic glasses with diameter of 20 mm were prepared by spark plasma...

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Bibliographic Details
Published in:	Applied physics. A, Materials science & processing Vol. 130; no. 10
Main Authors:	Dong, Weiwei, Dong, Minshuai, Peng, Junlong, Gong, Wendi, Zhu, Shigen
Format:	Journal Article
Language:	English
Published:	Berlin/Heidelberg Springer Berlin Heidelberg 01-10-2024 Springer Nature B.V
Subjects:	Abrasion resistance Abrasive wear Amorphous alloys Amorphous materials Annealing Bulk density Characterization and Evaluation of Materials Coefficient of friction Condensed Matter Physics Crystallization Diamond pyramid hardness Fracture toughness Heat treatment Iron Machines Manufacturing Metallic glasses Microstructure Nanotechnology Optical and Electronic Materials Particulate composites Physics Physics and Astronomy Plasma sintering Processes Spark plasma sintering Surfaces and Interfaces Thin Films Wear rate Wear resistance Fe-based amorphous nanocrystalline composites Spark plasma sintering Vickers hardness Wear resistance Annealing treatment
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Summary:	Aiming at the issues of small critical size and low glass forming ability of Fe-based amorphous alloys, this work focuses on solving the problem of preparing both large size and excellent properties. The highly dense FeCrMoBC bulk metallic glasses with diameter of 20 mm were prepared by spark plasma sintering, and the key role of heat treatment on the microstructure and properties of Fe-based bulk metallic glasses was investigated. The microstructure of Fe-based bulk metallic glasses was adjusted by annealing treatment, and the effects of annealing on the hardness and wear resistance of Fe-based bulk metallic glasses were studied. The results show that annealing induces partial crystallization of the alloy to construct in-situ amorphous nanocrystalline composites. After annealing at 650 °C for 1 h, Fe-based bulk metallic glasses precipitated Cr 23 C 6 and B 6 Fe 23 hard nanocrystalline phases. The highest Vickers hardness, highest fracture toughness, lowest friction coefficient, wear volume and wear rate were obtained, with values of 1514.68Hv, 2.81 MPa·m 1/2 ,0.59, 4.72 × 10 − 3 mm 3 and 2.62 × 10 − 6 mm 3 ·N − 1 ·m − 1 , respectively. Abrasive wear is the main form of wear, and the wear resistance is superior to that of GCr15. FeCrMoBC bulk metallic glasses exhibit outstanding hardness and wear resistance, providing new material options for the manufacture of high-performance advanced equipment.
ISSN:	0947-8396 1432-0630
DOI:	10.1007/s00339-024-07884-y