Mechanical Properties of Spray-Atomized FeAl40 at.%Al Alloys

Three different as-atomized alloys Fe-40 at.%Al, Fe-40Al + 0.1 at.%B, and Fe-40Al + 0.1 at.%B + 10 at.%Al2O3 were deformed by compression under strain rates from 10−4 to 10−2 s−1, in order to study room-temperature mechanical properties. In the interval of 10−4 to 10−3 s−1 strain rates all three alloys diminished their yield stress but in the interval of 10−3 to 10−2 s−1, the FeAl40 at.% base alloy and the alloy doped with boron raise their yield stress. On the other hand, contrary to the last two alloys the FeAl40 at.% alloy doped with boron and reinforcement with alumina particulate shows a decrease in the yield stress in the interval of the 10−3 to 10−2 s−1. The yield stress is discussed in terms of the effect of the boron and alumina particles, and the fracture morphology behavior. The main objective of this research is to present a comparative analysis of the three intermetallic materials, evaluating their structure and mechanochemical properties.