Dependence of magnetic properties on isothermal heat treatment time for 1Cr-1Mo-0.25V steel
Dependence of magnetic properties on isothermal heat treatment time for 1Cr-1Mo-0.25V steel
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DOI：
10.1016/s0304-8853(00)00532-1
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发表时间：
2000-12-01
影响因子：
2.7
通讯作者：
Son, D
中科院分区：
文献类型：
--
作者：
Ryu, KS;Nahm, SH;Son, D
研究了1Cr-1 Mo-0.25V钢等温热处理过程中组织变化对结构敏感磁性能的影响。随着时效时间的增加，磁导率增加，矫顽力和维氏硬度下降。在等温热处理过程中，晶界处出现了Mn 23 C6和（Cr-2.5，Fe4.3Mo0.1）C3碳化物。这些碳化物由C、Cr、Mo、Mn等形成，从基体向晶界移动。基体中碳的减少导致合金的维氏硬度和矫顽力降低，磁导率增加。机械性能和磁性能之间的相关性表明，机械硬度和微观结构的变化，可以很好地评价非破坏性的测量磁导率或矫顽力。(C)2000 Elsevier Science B. V.保留所有权利。
The effect of microstructural change during isothermal heat treatment on structure-sensitive magnetic properties has been investigated for 1Cr-1Mo-0.25 V steel. Magnetic permeability increased, but coercive force and Vickers hardness decreased as ageing time increased. During the isothermal heat treatment, Mn23C6 and (Cr-2.5,Fe4.3Mo0.1)C-3 carbides were found at grain boundaries. These carbides were formed by C, Cr, Mo, Mn, etc., which moved from matrix to grain boundary. The decrease of carbon in matrix resulted in the decrease of Vickers hardness and coercive force and the increase of permeability. The correlation between mechanical and magnetic properties indicates that the mechanical hardness and microstructural change could well be evaluated nondestructively by measuring permeability or coercive force. (C) 2000 Elsevier Science B.V. All rights reserved.