TY - JOUR
T1 - Production of nanocrystalline b.c.c. FeNbB bulk alloys by warm extrusion and their magnetic properties
AU - Kojima, A.
AU - Horikiri, H.
AU - Kawamura, Y.
AU - Makino, A.
AU - Inoue, A.
AU - Masumoto, T.
PY - 1994/5/1
Y1 - 1994/5/1
N2 - A bulky Fe84Nb7B9 alloy was obtained by extruding the powders ground from amorphous ribbon, at temperatures Te between 563 K and 723 K at pressures Pe between 824 MPa and 1208 MPa and at a speed of 5 mm s-1. The bulk Fe84Nb7B9 alloy extruded at Te = 698 K and Pe = 1208 MPa is in a fully consolidated state has a density of about 99%. The bulk alloy is composed of a mostly single b.c.c. phase with a grain size of about 10 nm after annealing for 3.6 ks at temperatures between 873 K and 973 K, and its soft magnetic property tends to better for the bulks extruded at lower pressures. The bulk alloy extruded at Te = 698 K and Pe = 824 MPa exhibits a high saturation magnetization Bs of 1.40 T and a low coercive force Hc of 64 A m-1 after annealing at 698 K.
AB - A bulky Fe84Nb7B9 alloy was obtained by extruding the powders ground from amorphous ribbon, at temperatures Te between 563 K and 723 K at pressures Pe between 824 MPa and 1208 MPa and at a speed of 5 mm s-1. The bulk Fe84Nb7B9 alloy extruded at Te = 698 K and Pe = 1208 MPa is in a fully consolidated state has a density of about 99%. The bulk alloy is composed of a mostly single b.c.c. phase with a grain size of about 10 nm after annealing for 3.6 ks at temperatures between 873 K and 973 K, and its soft magnetic property tends to better for the bulks extruded at lower pressures. The bulk alloy extruded at Te = 698 K and Pe = 824 MPa exhibits a high saturation magnetization Bs of 1.40 T and a low coercive force Hc of 64 A m-1 after annealing at 698 K.
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U2 - 10.1016/0921-5093(94)90257-7
DO - 10.1016/0921-5093(94)90257-7
M3 - Article
AN - SCOPUS:0028425714
VL - 179-180
SP - 511
EP - 515
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - PART 1
ER -