The Effect of Aluminum Content on the Microstructure and Cavitation Wear of Feal Intermetallic Alloys

Abstract

Abstract:Intermetallic-based alloys (so called intermetallics) of the Fe-Al binary system are modern construction materials, which in recent decades have found application in many branches of the power, chemical and automotive industries. High resistance of FeAl based alloys to cavitational erosion results first of all from their high hardness in the as-cast state, large compressive stresses in the material, as well as homogeneous structure. In the present paper, the effect of aluminum content on the microstructure, texture and strain implemented upon cavitation wear of FeAl intermetallic alloys, have been analyzed by field emission gun scanning electron microscopy (FEG SEM) and electron backscatter diffraction (EBSD) analysis. Obtained results of structural characterization indicates that with increasing aluminium content effects of orientation randomization (weakening of <100>//ND casting texture), grain refinement and rising of mechanical strenght (and so cavitational resistance) take place.

Cavitation Wear of CuZn10 Alloy in As-Cast State and after Plastic Working and Annealing

“…Generally, in the field of metallic materials both the structure state (grain size, crystallographic texture etc.) and metallurgical quality exhibit the greatest impact on their cavitational erosion resistance [10][11][12].…”