Effects of sintering time and temperature to the characteristics of FeCrAl powder compacts formed at elevated temperature

Md Mujibur Rahman, H. Y. Rahman, M. A.A. Awang, I. Sopyan

Research output: Contribution to journalConference article

Abstract

This paper presents the outcomes of an experimental investigation on the effect of sintering schedule, i.e., holding time and temperature to the final properties of FeCrAl powder compacts prepared through uniaxial die compaction process at above room temperature. The feedstock was prepared by mechanically mixing iron powder ASC 100.29 with chromium (22 wt%) and aluminium (11 wt%) for 30 min at room temperature. A cylindrical shape die was filled with the powder mass and heated for one hour for uniform heating of the die assembly together with the powder mass. Once the temperature reached to the setup temperature, i.e., 150°C, the powder mass was formed by applying an axial pressure of 425 MPa simultaneously from upward and downward directions. The as-pressed green compacts were then cooled to room temperature and subsequently sintered in argon gas fired furnace at a rate of 5°C/min for three different holding times, i.e., 30, 60, and 90 min at three different sintering temperatures, i.e., 800, 900, and 1000°C. The sintered samples were characterized for their density, electrical resistivity, bending strength, and microstructure. The results revealed that the sample sintered at 1000°C for 90 min achieved the better characteristics.

Original languageEnglish
Article number012009
JournalIOP Conference Series: Materials Science and Engineering
Volume290
Issue number1
DOIs
Publication statusPublished - 30 Jan 2018
EventInternational Conference on Advances in Manufacturing and Materials Engineering 2017, ICAMME 2017 - Kuala Lumpur, Malaysia
Duration: 08 Aug 201709 Aug 2017

Fingerprint

Powders
Sintering
Temperature
Iron powder
Argon
Chromium
Aluminum
Bending strength
Feedstocks
Furnaces
Compaction
Gases
Heating
Microstructure

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

Cite this

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abstract = "This paper presents the outcomes of an experimental investigation on the effect of sintering schedule, i.e., holding time and temperature to the final properties of FeCrAl powder compacts prepared through uniaxial die compaction process at above room temperature. The feedstock was prepared by mechanically mixing iron powder ASC 100.29 with chromium (22 wt{\%}) and aluminium (11 wt{\%}) for 30 min at room temperature. A cylindrical shape die was filled with the powder mass and heated for one hour for uniform heating of the die assembly together with the powder mass. Once the temperature reached to the setup temperature, i.e., 150°C, the powder mass was formed by applying an axial pressure of 425 MPa simultaneously from upward and downward directions. The as-pressed green compacts were then cooled to room temperature and subsequently sintered in argon gas fired furnace at a rate of 5°C/min for three different holding times, i.e., 30, 60, and 90 min at three different sintering temperatures, i.e., 800, 900, and 1000°C. The sintered samples were characterized for their density, electrical resistivity, bending strength, and microstructure. The results revealed that the sample sintered at 1000°C for 90 min achieved the better characteristics.",
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Effects of sintering time and temperature to the characteristics of FeCrAl powder compacts formed at elevated temperature. / Rahman, Md Mujibur; Rahman, H. Y.; Awang, M. A.A.; Sopyan, I.

In: IOP Conference Series: Materials Science and Engineering, Vol. 290, No. 1, 012009, 30.01.2018.

Research output: Contribution to journalConference article

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