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Densification Behavior and Wear Response of Spark Plasma Sintered Iron‐Based Bulk Amorphous Alloys
Author(s) -
Singh Ashish,
Paital Sameer R.,
Andapally Abhinay,
Dahotre Narendra B.,
Harimkar Sandip P.
Publication year - 2012
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201100322
Subject(s) - materials science , spark plasma sintering , amorphous solid , supercooling , crystallization , annealing (glass) , sintering , indentation hardness , metallurgy , amorphous metal , composite material , microstructure , chemical engineering , crystallography , alloy , chemistry , physics , engineering , thermodynamics
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.