Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microstructure and hardness characterization of mechanically alloyed Fe–C elemental powder mixture
AbstractMechanical alloying of iron–carbon (Fe–C) mixture powders was performed at various milling duration (2, 4, 6 and 8h) and with different carbon content (1, 2, 3 and 4wt.%). The milled powders were consolidated by cold pressing at 400MPa and sintering at 1150°C. The sintered samples were examined under an optical microscope and a scanning electron microscope for microstructure evolution, and measured for density, Rockwell F and Vickers hardness. This technique has produced Fe–C alloy with pearlite structure at lower temperature compared to conventional technique. With increasing milling time, more pearlite was formed which improved the hardness. Milling beyond 6h, however, decreased the hardness due to the presence of higher porosity because hardened powder hindered densification. Similarly, the hardness value reached the maximum at 2% carbon before decreasing at 3% and 4% carbon levels due to the residual graphite.
Microstructure and hardness characterization of mechanically alloyed Fe–C elemental powder mixture
AbstractMechanical alloying of iron–carbon (Fe–C) mixture powders was performed at various milling duration (2, 4, 6 and 8h) and with different carbon content (1, 2, 3 and 4wt.%). The milled powders were consolidated by cold pressing at 400MPa and sintering at 1150°C. The sintered samples were examined under an optical microscope and a scanning electron microscope for microstructure evolution, and measured for density, Rockwell F and Vickers hardness. This technique has produced Fe–C alloy with pearlite structure at lower temperature compared to conventional technique. With increasing milling time, more pearlite was formed which improved the hardness. Milling beyond 6h, however, decreased the hardness due to the presence of higher porosity because hardened powder hindered densification. Similarly, the hardness value reached the maximum at 2% carbon before decreasing at 3% and 4% carbon levels due to the residual graphite.
Microstructure and hardness characterization of mechanically alloyed Fe–C elemental powder mixture
Zuhailawati, Hussain (Autor:in) / Geok, Tan Chew (Autor:in) / Basu, Projjal (Autor:in)
19.10.2009
5 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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