Effect of Sintering Temperature and Holding Time to the Final Characteristics of Fecral Powder Compacts Formed at Elevated Temperature Through Die Compaction Method

Md Mujibur Rahman, R. M. Shahmi, H. Y. Rahman

Research output: Contribution to journalConference article

Abstract

This paper presents an experimental study on the effect of sintering temperature and holding time to the final characteristics of FeCrAl powder compacts formed at 200°C through uniaxial die compaction process. The powder mass was prepared by mechanically mixing iron powder ASC 100.29 with chromium (22 wt%) and aluminum (11 wt%) for 30 min at room temperature. The powder mass was formed at 200°C by applying an axial load of 425 MPa. The as-pressed compacts termed as green products 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, bending strength, and microstructure. The results revealed that the sample sintered at 800°C for 30 min got higher relative density but lower bending strength. Sample sintered at 1000°C for 30 min achieved the higher bending strength and better microstructure.

Original languageEnglish
Article number012030
JournalJournal of Physics: Conference Series
Volume1082
Issue number1
DOIs
Publication statusPublished - 10 Oct 2018
EventRegional Conference on Materials and ASEAN Microscopy Conference 2017, RCM and AMC 2017 - Penang, Malaysia
Duration: 12 Dec 201713 Dec 2017

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flexural strength
sintering
axial loads
microstructure
temperature
room temperature
furnaces
chromium
argon
aluminum
iron
products
gases

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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title = "Effect of Sintering Temperature and Holding Time to the Final Characteristics of Fecral Powder Compacts Formed at Elevated Temperature Through Die Compaction Method",
abstract = "This paper presents an experimental study on the effect of sintering temperature and holding time to the final characteristics of FeCrAl powder compacts formed at 200°C through uniaxial die compaction process. The powder mass was prepared by mechanically mixing iron powder ASC 100.29 with chromium (22 wt{\%}) and aluminum (11 wt{\%}) for 30 min at room temperature. The powder mass was formed at 200°C by applying an axial load of 425 MPa. The as-pressed compacts termed as green products 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, bending strength, and microstructure. The results revealed that the sample sintered at 800°C for 30 min got higher relative density but lower bending strength. Sample sintered at 1000°C for 30 min achieved the higher bending strength and better microstructure.",
author = "Rahman, {Md Mujibur} and Shahmi, {R. M.} and Rahman, {H. Y.}",
year = "2018",
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AU - Rahman, Md Mujibur

AU - Shahmi, R. M.

AU - Rahman, H. Y.

PY - 2018/10/10

Y1 - 2018/10/10

N2 - This paper presents an experimental study on the effect of sintering temperature and holding time to the final characteristics of FeCrAl powder compacts formed at 200°C through uniaxial die compaction process. The powder mass was prepared by mechanically mixing iron powder ASC 100.29 with chromium (22 wt%) and aluminum (11 wt%) for 30 min at room temperature. The powder mass was formed at 200°C by applying an axial load of 425 MPa. The as-pressed compacts termed as green products 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, bending strength, and microstructure. The results revealed that the sample sintered at 800°C for 30 min got higher relative density but lower bending strength. Sample sintered at 1000°C for 30 min achieved the higher bending strength and better microstructure.

AB - This paper presents an experimental study on the effect of sintering temperature and holding time to the final characteristics of FeCrAl powder compacts formed at 200°C through uniaxial die compaction process. The powder mass was prepared by mechanically mixing iron powder ASC 100.29 with chromium (22 wt%) and aluminum (11 wt%) for 30 min at room temperature. The powder mass was formed at 200°C by applying an axial load of 425 MPa. The as-pressed compacts termed as green products 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, bending strength, and microstructure. The results revealed that the sample sintered at 800°C for 30 min got higher relative density but lower bending strength. Sample sintered at 1000°C for 30 min achieved the higher bending strength and better microstructure.

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