Chaubey, A. K. and Gupta, Rajat and Kumar, Rohit and Verma, Bharat and Kanpara, Shailesh and Bothula, Sivaiah and Khirwadkar, S. S. and Dhar, Ajay (2018) Fabrication and characterization of W-Cu functionally graded material by spark plasma sintering process. Fusion Engineering and Design, 135. pp. 24-30. ISSN 0920-3796

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Abstract

In this study, seven-layered W/Cu functionally graded material (FGM) (100 W, 80W-20Cu, 60W-40Cu, 50W-50Cu, 40W-60Cu, 20W-80Cu, 100Cu, by wt %) were fabricated by a spark plasma sintering process (SPS). The influences of sintering temperature on microstructure, physical and mechanical properties of the sintered bulk FGM were investigated. Results indicated that the graded structure of the composite densified after the SPS process and interfaces of the layers are clearly visible. All of the layers had a very high relative density, thereby indicating their densification and excellent sintering behavior. SEM and EDX study of the bulk sample crosssection reveal that the graded structure can be retained up to sintering temperature of 1050 degrees C. In addition fine microstructure within each layer with good interface bonding was also observed. Sample sintered at 1050 degrees C exhibited excellent mechanical and physical properties (hardness 239 +/- 5 Hv and relative density of 90.5%). The result demonstrates that SPS is a promising and more suitable process for fabrication of W-Cu functionally graded materials.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier.
Subjects:	Nuclear Science Technology
Divisions:	UNSPECIFIED
Depositing User:	Mr. Yogesh Joshi
Date Deposited:	27 Mar 2019 11:40
Last Modified:	27 Mar 2019 11:40
URI:	http://npl.csircentral.net/id/eprint/4035

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