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oai:figshare.com:article/34040256 2026-10-01T06:08:25Z category_33464 category_32963 category_36908 category_33503 portal_1005 item_type_6 month_year_10_2026

Microstructure evolution and densification during spark plasma sintering of nanocrystalline W-5wt.%Ta alloy AK Srivastav (25153230) S Bandi (7777691) A Kumar (557730) BS Murty (14463753) Materials engineering Engineering Condensed matter physics Mechanical engineering Science & Technology Technology Physical Sciences Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter Materials Science Physics Nanocrystalline alloys non-isothermal sintering Kirkendall porosity spark plasma sintering TO-DUCTILE TRANSITION X-RAY VOIGT-FUNCTION FRACTURE-BEHAVIOR LATTICE-STRAIN TUNGSTEN SIZE TA RE Q3 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.<p></p> 2020-01-01T00:00:00Z Text Journal contribution 10.26187/deakin.34040256 https://figshare.com/articles/journal_contribution/Microstructure_evolution_and_densification_during_spark_plasma_sintering_of_nanocrystalline_W-5wt_Ta_alloy/34040256 All Rights Reserved Restricted Access