Effects of sintering schedule on the characteristics of fe-based powder compacts formed through warm compaction route

Md Mujibur Rahman, M. H. Rosli, D. Namasivayam

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper presents the sintering characteristics of Fe-based powder compacts formed through the warm compaction method. Iron powder ASC100.29 (73 wt%), chromium powder (22 wt%), and aluminium powder (5 wt%) were mixed mechanically for 60 mins in preparing the feedstock. The powder mixture was subsequently compacted at 200°C through simultaneous loading of 325 MPa from upper and lower punches. The defectfree green compacts were then sintered in an argon gas fired furnace at a rate of 10°C/min by varying the sintering time (30, 60, and 90 mins) and temperature (600, 750, and 900°C), respectively. The sintered samples were characterized through physical and mechanical properties and their microstructures were analysed through scanning electron microscopy. The results revealed that sintering at 900°C for 90 mins contributed to the highest volumetric expansion and relative density change, which are not expected in the powder metallurgy industries. A moderate sintering temperature of 750°C for a holding time of 60 mins was found to produce a sintered sample with higher bending strength. In these sintering conditions, better dispersion of the alloyed elements is also observed.

Original languageEnglish
Pages (from-to)3168-3177
Number of pages10
JournalInternational Journal of Automotive and Mechanical Engineering
Volume13
Issue number1
DOIs
Publication statusPublished - 01 Jun 2016

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Compaction
Sintering
Powders
Iron powder
Powder metallurgy
Bending strength
Feedstocks
Argon
Chromium
Furnaces
Physical properties
Aluminum
Mechanical properties
Temperature
Microstructure
Scanning electron microscopy
Gases
Industry

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Mechanical Engineering

Cite this

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Effects of sintering schedule on the characteristics of fe-based powder compacts formed through warm compaction route. / Rahman, Md Mujibur; Rosli, M. H.; Namasivayam, D.

In: International Journal of Automotive and Mechanical Engineering, Vol. 13, No. 1, 01.06.2016, p. 3168-3177.

Research output: Contribution to journalArticle

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