Synthesis and characterization of spark plasma sintered FeAl and in situ FeAl–Al2O3 composite

Chawake, Niraj ; Paleti, Sri Harish Kumar ; Murty, B. S. ; Kottada, Ravi S. (2013) Synthesis and characterization of spark plasma sintered FeAl and in situ FeAl–Al2O3 composite Transactions of the Indian Institute of Metals, 66 (4). pp. 419-424. ISSN 0019-493X

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Official URL: https://link.springer.com/article/10.1007/s12666-0...

Related URL: http://dx.doi.org/10.1007/s12666-013-0279-1

Abstract

In the present work, nanocrystalline FeAl and FeAl–Al2O3 composite were synthesized by high energy ball milling and subsequent compaction by spark plasma sintering. Microstructural changes during all stages of processing are studied using X-ray analysis. After 20 h of milling, the disordered FeAl and some amount of Fe rich solid solution was obtained in both of these compositions. Subsequent heat treatment results in formation of ordered FeAl. However, disordering of FeAl was observed in both compositions after spark plasma sintering. Nanocrystallinity is retained in both the compositions even after sintering at high temperature of 1,000°C. Very high hardness of ∼575 HV1 and ∼600 HV1 was exhibited by FeAl and FeAl–Al2O3 composite.

Item Type:Article
Source:Copyright of this article belongs to Springer Verlag.
Keywords:Iron Aluminide; Reactive Milling; Spark Plasma Sintering; Disordering
ID Code:110913
Deposited On:06 Dec 2017 11:05
Last Modified:06 Dec 2017 11:05

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