Effect of heating mode on sinterability of Fe-Ni steels

A. Raja Annamalai, Rajiv Kumar, Anish Upadhyaya, Dinesh Kumar Agrawal

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The present study examines the effect of heating mode on the densifcation, microstructure, and mechanical properties of iron-nickel steel with graphite and phosphorus addition. The compacts were sintered in conventional (radiatively-heated) and microwave (2.45 GHz, multimode) furnaces at 1120°C for 1 hour in forming gas (dissociated ammonia atmosphere, 95% N 2-5% H 2). The experimental results show that microwave sintered alloy has better properties compared with the conventionally sintered counterparts. Detailed analyses by using optical microscopy and scanning electron microscopy (SEM) reveal that microwave sintered sample has finer microstructure. SEM examination of the fractured surfaces indicate that a mixed mode fracture containing both, ductile and brittle types, is present in microwave sintered alloy, in contrast with the brittle fracture only in conventional sintered counterpart.

Original languageEnglish (US)
Pages (from-to)162-177
Number of pages16
JournalJournal of Microwave Power and Electromagnetic Energy
Volume45
Issue number4
StatePublished - Dec 1 2011

Fingerprint

Steel
Microwaves
steels
Heating
microwaves
heating
nickel steels
microstructure
Microstructure
Scanning electron microscopy
scanning electron microscopy
Graphite
Brittle fracture
Nickel
Ammonia
Phosphorus
Optical microscopy
furnaces
phosphorus
ammonia

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering

Cite this

Raja Annamalai, A., Kumar, R., Upadhyaya, A., & Agrawal, D. K. (2011). Effect of heating mode on sinterability of Fe-Ni steels. Journal of Microwave Power and Electromagnetic Energy, 45(4), 162-177.
Raja Annamalai, A. ; Kumar, Rajiv ; Upadhyaya, Anish ; Agrawal, Dinesh Kumar. / Effect of heating mode on sinterability of Fe-Ni steels. In: Journal of Microwave Power and Electromagnetic Energy. 2011 ; Vol. 45, No. 4. pp. 162-177.
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Raja Annamalai, A, Kumar, R, Upadhyaya, A & Agrawal, DK 2011, 'Effect of heating mode on sinterability of Fe-Ni steels', Journal of Microwave Power and Electromagnetic Energy, vol. 45, no. 4, pp. 162-177.

Effect of heating mode on sinterability of Fe-Ni steels. / Raja Annamalai, A.; Kumar, Rajiv; Upadhyaya, Anish; Agrawal, Dinesh Kumar.

In: Journal of Microwave Power and Electromagnetic Energy, Vol. 45, No. 4, 01.12.2011, p. 162-177.

Research output: Contribution to journalArticle

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Raja Annamalai A, Kumar R, Upadhyaya A, Agrawal DK. Effect of heating mode on sinterability of Fe-Ni steels. Journal of Microwave Power and Electromagnetic Energy. 2011 Dec 1;45(4):162-177.