Microstructure of coupled Al/gray cast iron obtained by molding and its effect on mass loss

Abstract

C ast irons are used in industry due to their interesting mechanical properties and low manufacturing costs. Nevertheless, the performances of such alloys remain limited regarding some particular conditions of service (fatigue, abrasion, or corrosion). In fact, cracking occurs easily in graphite which causes mechanical failures, thereby reducing the mechanical resistance of the cast iron. Cast irons are widely used in applications involving resistance to abrasive wear. These parts can work under a wide variety of wear conditions, and the material structure can be modified to reinforce the friction properties. This structural modification can be obtained by localized quenching, or by superficial treatments [1] . Several studies have been conducted to investigate the effect of the alloying elements on the mechanical properties of gray cast irons [1][2][3][4][5] . It was found that aluminum could reduce quenching, refi ne the grains, give the graphite an inter-dendritic appearance,

Production of Lamellar Cast Iron EN-GJL-150 From Local Manganese-Rich Pig Iron by Modification of the Melting Process

“…Until today, cast iron still constitutes the majority (≈70%) of metal castings [1,6]. In addition, specific cast irons are the material of choice for seawater pump casings, rolling mill rolls and earthmoving machinery parts [2,[6][7][8].…”

“…1 • ln (𝑀𝑛%)(8) Where H refers to Brinell or Rockwell hardness. from local manganese-rich pig iron by modification of the melting process…”