抄録
Fe-48at%Cr powder was synthesized by mechanical alloying (MA) of elemental Fe (99.8mass%Fe) powder and Cr (99.9mass%Cr) powder using a planetary ball milling for 180 ks. The X-ray diffraction profile of the obtained MA powder showed Fe-Cr solid solution. The powder was consolidated using a pulsed current sintering (PCS) method at 1073 K for 0.3 ks. The structure of the consolidated bulk material was consisted of Fe-Cr solid solution with the grain size of approximately 1μm. This bulk material showed 869 MPa in tensile strength and 20% in elongation at room temperature. The mechanically alloyed Fe-48at%Cr powder was formed into the product with a complicated shape by controlling the forming condition such as an applied pressure or a cooling rate in PCS.
