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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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 CreatorsORCiD
Murty, B S0000-0002-4399-8531
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://raiith.iith.ac.in/id/eprint/11239
Publisher URL: http://doi.org/10.1080/09500839.2020.1793010
OA policy: https://v2.sherpa.ac.uk/id/publication/5936
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