EFFECTS OF SINTERING TEMPERATURE TO THE MECHANICAL PROPERTIES AND MICROSTRUCTURES OF Fe67Cr22Al11 POWDER COMPACTS
Rahman MM* , Namasivayam D and Rahman HY
Abstract
EFFECTS OF SINTERING TEMPERATURE TO THE MECHANICAL PROPERTIES AND MICROSTRUCTURES OF Fe67Cr22Al11 POWDER COMPACTS
Rahman MM[1], Namasivayam D and Rahman HY
Centre for Advanced Materials, College of Engineering, Universiti Tenaga Nasional, Putrajaya Campus, 43000 Kajang, Selangor, Malaysia.
This paper presents an experimental investigation on the effects of sintering temperature to the mechanical properties and microstructures of FeCrAl powder compacts formed through warm powder compaction route. Elemental iron powder ASC 100.29, copper and aluminum powder were blended mechanically in a low speed mixer. The blended powder mass was compacted at a temperature of 200°C and was later sintered in an argon gas fired furnace by varying the sintering temperature, i.e., 600°C, 750°C and 900°C for 90 minutes. The sintered products were then subjected to density measurement, flexure strength measurement as well as microstructure analysis through scanning electron microscopy. The results revealed that the suitable sintering temperature is 600°C which generated light weight products with higher bending strength, lower volumetric expansion, and better microstructure.
Keywords: sintering schedule, mechanical properties, microstructure
[1] Corresponding author: E-mail: mujibur@uniten.edu.my
