Details

Autor(en) / Beteiligte

• Srivastav, Ajeet K.
• Bandi, Suresh
• Kumar, Abhishek
• Murty, B.S.

Titel

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

Ist Teil von

• Philosophical magazine letters, 2020-09, Vol.100 (9), p.442-451

Ort / Verlag

Abingdon: Taylor & Francis

Erscheinungsjahr

2020

Quelle

Taylor & Francis Journals Auto-Holdings Collection

Beschreibungen/Notizen

• 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 powder was 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  µm.