热处理对FeCo-2V-0.5Cr软磁合金力学与磁学性能的影响
收稿日期: 2014-07-16
修回日期: 2014-08-05
网络出版日期: 2014-08-07
Effect of Heat Treatment on Mechanical and Magnetic Properties of FeCo-2V-0.5Cr Soft Magnetic Alloy
Received date: 2014-07-16
Revised date: 2014-08-05
Online published: 2014-08-07
针对FeCo-2V-0.5Cr软磁合金，研究了真空热处理时间对其微观组织结构、力学与磁学性能的影响规律，发现在800 ℃下热处理时间为2 h左右时，合金的抗拉强度和延伸率达到最佳，同时仍保持良好的软磁性能，抗拉强度、延伸率以及矫顽力分别为867.8 MPa、10.4%以及 2.0 Oe。进一步对该合金进行附加磁场下的真空热处理，重点研究了合金的交流损耗与矫顽力随附加磁场方式包括磁场撤除温度与磁场下保温时间的变化规律，发现适当的磁场热处理对合金相关力学性能影响不大，但由于合金中产生了单轴各向异性而使合金矫顽力进一步降至1.6 Oe。
陈慈航 , 明开胜 , 毕晓昉 . 热处理对FeCo-2V-0.5Cr软磁合金力学与磁学性能的影响[J]. 航空学报, 2014 , 35(10) : 2813 -2818 . DOI: 10.7527/S1000-6893.2014.0175
Effects of vacumm annealing time on the microstructure, mechanical and soft magnetic properties of FeCo-2V-0.5Cr alloy have been investigated. After annealed at 800 ℃ for about 2 h, the alloy can obtain the optimal tensile strength and elongation while remaining good soft magnetic property, the tensile strength and elongation can reach up to 867.8 MPa and 10.4 % while the coercivity is 2.0 Oe. Further researches of the influence of the magnetic field annealing on the properties of the alloy have been conducted and the effects of different additional magnetic field ways of field-off temperature and annealing time on the loss and coercivity of the alloy have been specially investigated. It can be concluded that a suitable magnetic heat treatment has little effect on the mechanical properties of the alloy, while the coercivity of the alloy can decrease to 1.6 Oe, which is due to the uniaxial anisotropy caused by the magnetic field annealing in the alloy.
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