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

Rahman, Md Mujibur and Rahman, H. Y. and Awang, Mohd Anuar and Sopyan, Iis (2018) Effects of sintering schedule to the characteristics of FeCrAl powder compacts formed at elevated temperature. In: International Conference on Advances in Manufacturing and Materials Engineering 2017 (ICAMME17), 8th-9th August 2017, Kuala Lumpur, Malaysia.

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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., 150ºC, 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 5ºC/min for three different holding times, i.e., 30, 60, and 90 min at three different sintering temperatures, i.e., 800, 900, and 1000ºC. The sintered samples were characterized for their density, electrical resistivity, bending strength, and microstructure. The results revealed that the sample sintered at 1000ºC for 90 min achieved the better characteristics.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	4809/62782
Uncontrolled Keywords:	FeCrAl powder compacts, elevated temperature
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA349 Mechanics of engineering. Applied mechanics T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	PROF. DR. IIS SOPYAN
Date Deposited:	21 Mar 2018 09:42
Last Modified:	29 Jun 2018 12:08
URI:	http://irep.iium.edu.my/id/eprint/62782

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