PRODUCTION OF NANOCRYSTALLINE BCC FE-NB-B BULK ALLOYS BY WARM EXTRUSION AND THEIR MAGNETIC-PROPERTIES

被引：22

作者：

KOJIMA, A ^{[1
]}

HORIKIRI, H ^{[1
]}

KAWAMURA, Y ^{[1
]}

MAKINO, A ^{[1
]}

INOUE, A ^{[1
]}

MASUMOTO, T ^{[1
]}

机构：

[1] ALPS ELECT CO LTD,CENT LAB,NAGAOKA 940,JAPAN

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1994年 / 179卷 / pt 1期

关键词：

D O I：

10.1016/0921-5093(94)90257-7

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A bulky Fe84Nb7B, alloy was obtained by extruding the powders ground from amorphous ribbon, at temperatures T(e) between 563 K and 723 K at pressures P(e) between 824 MPa and 1208 MPa and at a speed of 5 mm s-1. The bulk Fe84Nb7B9 alloy extruded at T(e) = 698 K and P(e) = 1208 MPa is in a fully consolidated state and 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 be better for the bulks extruded at lower pressures. The bulk alloy extruded at T(e) = 698 K and P(e) = 824 MPa exhibits a high saturation magnetization B(s) of 1.40 T and a low coercive force H(c) of 64 A m-1 after annealing at 698 K.

引用

页码：511 / 515

页数：5

共 12 条

[1]

Hasegawa N., 1990, J MAG SOC JPN, V14, P313

[2]

ISHIO S, 1988, J MAGN SOC JPN, V12, P259

[3] PREPARATION OF BULK AMORPHOUS-ALLOYS BY HIGH-TEMPERATURE SINTERING UNDER A HIGH-PRESSURE [J].