Effect of heating mode and sintering temperature on the consolidation of 90W-7Ni-3Fe alloys

Avijit Mondal, Anish Upadhyaya, Dinesh Agrawal

Research output: Contribution to journalArticle

40 Scopus citations

Abstract

The present study compares the sintering response of 90W-7Ni-3Fe alloys consolidated in a 2.45 GHz microwave furnace and a conventional furnace. The W-Ni-Fe compacts were sintered in a temperature range of 1200-1500 °C corresponding to solid-state as well as liquid phase sintering. The compacts were successfully sintered in a microwave furnace with about 80% reduction in the overall processing time. For both the heating modes, the W-Ni-Fe alloys exhibited significant densification prior to melt formation through solid-state sintering. The in situ dilatometric studies revealed that the contribution to densification from solid-state sintering is higher at lower heating rates. In comparison to conventional sintering, microwave sintered compacts showed relatively refined microstructure and higher hardness and flexural strength.

Original languageEnglish (US)
Pages (from-to)301-310
Number of pages10
JournalJournal of Alloys and Compounds
Volume509
Issue number2
DOIs
StatePublished - Jan 12 2011

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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