HIGHLY CORROSION RESISTANT AND HIGH STRENGTH Fe-Cr BASE BULK AMORPHOUS ALLOY

摘要

PROBLEM TO BE SOLVED: To solve such a problem that, the conventional Fe-Cr series amorphous alloy, because of its small amorphous formability, the obtained amorphous alloy shape is limited to the thin strip one, filamintary one and powdery one, and the alloy has not been provided with dimensions applicable to general industrial materials. ;SOLUTION: This highly corrosion resistant and high strength Fe-Cr base bulk amorphous alloy excellent in amorphous formability has a composition expressed by the formula of Fe100-a-b-cCra TMb (C1-xBxPy)c [wherein, TM=at least one or more kinds selected from V, Nb, Mo, Ta, W, Co, Ni and Cu, and as to (a), (b), (c), (x) and (y), respectively, 5 atomic %≤a≤30 atomic %, 5 atomic %≤b≤20 atomic %, 10 atomic %≤c≤35 atomic %, 25 atomic %≤a+b≤50 atomic %, 35 atomic %≤a+b+c≤60 atomic %, 0.11≤x≤0.85 and 0≤y≤0.57 are satisfied], containing an amorphous phase combining a super cooled liquid region of ≥50 K and a glass transition temperature of ≥850 K at ≥50% by volume percentage and excellent in amorphous formability.;COPYRIGHT: (C)2001,JPO