Effect of B and Cr on Mechanical Properties and Magnetostriction of Iron-Gallium Alloy

Abstract

Effects of B and Cr additions on magnetostriction and the mechanical properties of polycrystalline Fe83Ga17 alloy were investigated. Small addition of B increased magnetostriction of Fe83Ga17 alloy slightly, and improved the room temperature ductility and tensile strength significantly. The elongation and tensile strength of the (Fe83Ga17)99B1 alloy increased to 3.56% and 548 MPa compared with that of Fe83Ga17 alloy respectively. The Cr addition was shown to improve the room temperature mechanical properties of Fe83Ga17 alloy beneficially. The maximum magnetostriction of (Fe83Ga17)98Cr2 alloy was 70×10−6. The influences of B and Cr additions on the fracture mode of Fe83Ga17 alloy were also studied in this paper.