Abstract
It has been known that Fe-W-Cr-Mo alloy produced by the casting method is peculiarly suitable for a semi-hard magnetic material than for a hard magnetic material.
This paper deals with the manufacturing process of the alloy by powder metallurgy, which has not yet been satisfactorily tried, and the effect of the processing parameters on the magnetic properties, micro Vicker's hardness, and microstructure. The best magnetic properties were 4πIIK 13, 800 G, 4πIr 7, 000 G, BHc 75 Oe for Fe-12.6W-8.4Cr-2.0Mo alloy and 4πIIK 10, 000 G, 4πIr 6, 400 G, BHC 170 Oe for Fe-18 W-12Cr-3Mo alloy. From the experimental results, it was confirmed that this alloy may be a precipitation hardening material.
