Densification Behavior and Wear Response of Spark Plasma Sintered Iron-Based Bulk Amorphous Alloys

In the present study, spark plasma sintering (SPS) process is used to sinter Fe‐based bulk amorphous alloys from starting amorphous powder. The sintering was performed in supercooled liquid region (at 630 °C with uniaxial pressure of 70 MPa) where plastic flow of the amorphous powder results in bett...

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Bibliographic Details
Published in:Advanced engineering materials 2012-06, Vol.14 (6), p.400-407
Main Authors: Singh, Ashish, Paital, Sameer R., Andapally, Abhinay, Dahotre, Narendra B., Harimkar, Sandip P.
Format: Article
Language:English
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Summary:In the present study, spark plasma sintering (SPS) process is used to sinter Fe‐based bulk amorphous alloys from starting amorphous powder. The sintering was performed in supercooled liquid region (at 630 °C with uniaxial pressure of 70 MPa) where plastic flow of the amorphous powder results in better densification without crystallization. To study the crystallization behavior and its influence on mechanical behavior, the sintered discs were de‐vitrified by annealing at 700 and 800 °C. Detailed characterization of phase development, microhardness at different loads, and wear behavior of the as‐sintered and annealed alloys is presented. Spark plasma sintering (SPS) process was used to sinter Fe‐based bulk amorphous alloys from starting amorphous powder. The sintered discs were annealed at 700 and 800 °C to study the crystallization behavior and its influence on mechanical behavior. The partial devitrification resulted in increase in microhardness and wear resistance.
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.201100322