Microstructure evolution and densification during spark plasma sintering of nanocrystalline W-5wt.%Ta alloy

Srivastav, Ajeet K. and Bandi, Suresh and Kumar, Abhishek and Murty, B S (2020) Microstructure evolution and densification during spark plasma sintering of nanocrystalline W-5wt.%Ta alloy. Philosophical Magazine Letters, 100 (9). pp. 442-451. ISSN 0950-0839

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Abstract

The present work reports the effect of Ta on densification and microstructure evolution during non-isothermal and spark plasma sintering of nanocrystalline W. Nanocrystalline W-5wt.%Ta alloy powder was synthesised using mechanical alloying. The nanocrystalline powders were characterised thoroughly using X-ray diffraction line profile analysis. Furthermore, the shrinkage behaviour of nanocrystalline powder was investigated during non-isothermal sintering using dilatometry. Subsequently, the alloy powder was consolidated using spark plasma sintering up to 1600°C. The role of Ta on stabilising the microstructure during spark plasma sintering of nanocrystalline W was investigated in detail using electron backscatter diffraction. The average grain size of spark plasma sintered W-5wt.%Ta alloy was observed as (Formula presented.) µm. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.

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IITH Creators:

IITH Creators	ORCiD
Murty, B S	0000-0002-4399-8531

Item Type:

Article

Additional Information:

Ajeet K. Srivastav gratefully acknowledges the Senior Research Fellowship supported by CSIR-India [Award No. 09/084(0519)2010-EMR-I]. We are grateful to Dr. Jyoti Shankar Jha for his extended support in characterisation of the samples.

Uncontrolled Keywords:

Binary alloys; Isotherms; Microstructure; Nanocrystalline powders; Nanocrystals; Spark plasma sintering; Tantalum alloys; Tantalum metallography; Tungsten alloys; Tungsten metallography

Subjects:

Others > Metallurgy Metallurgical Engineering

Divisions:

Department of Material Science Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

15 Nov 2022 08:54

Last Modified:

15 Nov 2022 08:54

URI:

http://raiithold.iith.ac.in/id/eprint/11239