Hot rolling of intermetallics FeAl phase based alloys

Purpose: The one of major problem restricting universal employment of intermetallic phase base alloy is their low plasticity which leads to hampering their development as construction materials. The following work concentrates on possibilities to form through rolling process the alloys with various aluminium content. Design/methodology/approach: After casting and annealing, alloy specimens were subjected to axialsymmetric compression at temperatures ranging from 900 to 1200°C at 10 s-1 strain rates. In order to analyse the processes which take place during deformation, the specimens after deformation were intensely cooled with water. Structural examination was carried out using light microscopy. The process was conducted on the K -350 quarto rolling mill used for hot rolling of flat products. The process was conducted in some stages in at temperatures ranging from 1200-900°C: Findings: The research carried out enabled the understanding of the phenomena taking place during hot rolling of the investigated alloy. An alloy with 38%at. aluminium concentration can be plastically formed at a temperature of up to 900°C, which has been also confirmed in plastometric studies conducted in the form of hot compression tests. Research limitations/implications: Practical implications: The obtained sheets can be used as constructional elements working in complex stress fields, at a high temperature and corrosive environments Originality/value: The tests have shown that it is possible to form the investigated alloys through rolling processing only where shields are applied. Rolling of the alloys without shields led to the occurrence of a grid of cracks.