Field-dependent neutron depolarization study of the ferrite formation in medium-carbon steels

被引:10
作者
Velthuis, SGET
Van Dijk, NH
Rekveldt, MT
Sietsma, J
Van der Zwaag, S
机构
[1] Delft Univ Technol, Interfac Reactor Inst, NL-2629 JB Delft, Netherlands
[2] Delft Univ Technol, Mat Sci Lab, NL-2628 AL Delft, Netherlands
[3] Netherlands Inst Met Res, NL-2628 AL Delft, Netherlands
关键词
neutron depolarization; steel; phase transformations; microstructure;
D O I
10.1016/S1359-6454(99)00414-0
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Neutron depolarization experiments have been performed on the ferrite and pearlite phase transformations of the medium-carbon C60 and C35 steels. The interaction of the polarized neutron beam with the ferromagnetic ferrite grains gives information on the mean magnetization and the magnetic correlation length. From these parameters the ferrite fraction and the mean ferrite grain size are determined in situ as a function of time and temperature during the phase transformations. The applied magnetic field was varied periodically in order to record a full hysteresis curve of the magnetization, which gives essential information on the microstructure of the ferromagnetic ferrite grains. Thee field dependence of the mean particle size during the early stages of the pearlite formation is a strong indication of multi-domain behavior, which is absent in the austenite-ferrite transformation and at the end of the pearlite formation. (C) 2000 Acta Metallurgica Inc. Published by Elsevier Science Lid. All rights reserved.
引用
收藏
页码:1105 / 1114
页数:10
相关论文
共 20 条
  • [1] BEALE AD, 1991, MATER RES SOC SYMP P, V232, P313, DOI 10.1557/PROC-232-313
  • [2] Directional ferromagnetic properties of metals
    Bozorth, RM
    [J]. JOURNAL OF APPLIED PHYSICS, 1937, 8 (09) : 575 - 588
  • [3] INFLUENCE OF TEMPERATURE AND MICROSTRUCTURE ON COERCIVE FORCE OF 0.8 PERCENT C STEEL
    ENGLISH, AT
    [J]. ACTA METALLURGICA, 1967, 15 (10): : 1573 - &
  • [4] On the passage of neutrons through ferromagnets
    Halpern, O
    Holstein, T
    [J]. PHYSICAL REVIEW, 1941, 59 (12): : 960 - 981
  • [5] HIGH-VOLTAGE LORENTZ ELECTRON-MICROSCOPY STUDIES OF DOMAIN-STRUCTURES AND MAGNETIZATION PROCESSES IN PEARLITIC STEELS
    HETHERINGTON, MG
    JAKUBOVICS, JP
    SZPUNAR, JA
    TANNER, BK
    [J]. PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1987, 56 (05): : 561 - 577
  • [6] Jiles D.C., 1998, Introduction to magnetism and Magnetic Materials, V2
  • [8] THEORY OF FERROMAGNETIC HYSTERESIS
    JILES, DC
    ATHERTON, DL
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1986, 61 (1-2) : 48 - 60
  • [9] KRIELAART GP, 1994, Z METALLKD, V85, P709
  • [10] X-ray analysis of oxygen-induced perpendicular magnetic anisotropy in Pt/Co/AlOx trilayers
    Manchon, A.
    Pizzini, S.
    Vogel, J.
    Uhlir, V.
    Lombard, L.
    Ducruet, C.
    Auffret, S.
    Rodmacq, B.
    Dieny, B.
    Hochstrasser, M.
    Panaccione, G.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2008, 320 (13) : 1889 - 1892