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

Rahman, Md Mujibur and Rahman, Haolia Y. and Awang, M. A.A. and Sopyan, Lis (2018) Effects of sintering time and temperature to the characteristics of FeCrAl powder compacts formed at elevated temperature. In: "International Conference on Advances in Manufacturing and Materials Engineering 2017, ICAMME 2017", 8-9 August 2017, International Islamic University Malaysia (IIUM), Gombak Campus, Kuala Lumpur.

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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: 4809/64419
Uncontrolled Keywords: Sintering time and temperature; Characteristics of FeCrAl powder compacts; Elevated temperature
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA170 Environmental engineering
T Technology > TS Manufactures
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: PROF. DR. IIS SOPYAN
Date Deposited: 26 Jun 2018 11:58
Last Modified: 02 Aug 2018 16:44
URI: http://irep.iium.edu.my/id/eprint/64419

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