共查询到16条相似文献,搜索用时 125 毫秒
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与经普通淬火和高温回火的相比,经磁场淬火和高温回火的T10钢的抗拉强度提高了28%,断后伸长率提高了8.6%,硬度提高了8HRC。此外,磁场淬火还提高了T10钢的抗回火能力,这是由于磁场淬火后的钢中含有大量弥散碳化物所致。 相似文献
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试验用磁场淬火槽,其磁场强度值为236 363.6 A/m,已成功地用于磁场淬火工艺试验。在此基础上研发的ΦG300/1000型工业用磁场淬火装置6,年左右的使用表明,经该设备淬火的冷冲模具的使用寿命比经普通淬火的冷冲模具平均提高了0.5~2倍。 相似文献
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本文研究了交变磁场对钢中残余奥氏体转变的影响。实验结果表明,在磁场下淬火和回火,使马氏体弥散度增加,残余奥氏体数量减少,碳化物颗粒细化。对于GCr15和CrMn钢,在磁场下淬火及回火,可相当于-80℃的冷处理。 相似文献
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磁场热处理及其应用和发展前景 总被引:1,自引:1,他引:1
简述了磁场热处理使钢强化的机制和强化效果 ,并将其与普通形变热处理作了比较。介绍了冷冲模的磁场淬火和高速钢的磁场回火等应用情况 ,展望了磁场热处理的发展前景。 相似文献
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最佳磁场淬火工艺的探讨 总被引:6,自引:1,他引:5
试验证明,在磁场淬火工艺中,采用交流磁场效果较好,而且随磁场强度的增大,效果愈好。在碳素钢中,含碳量小于0.2%者不宜采用磁场淬火工艺,含碳量在0.4%以上者效果最佳,对于合金钢,凡是含有能使Fe-C状态图共析点左移的合金元素的钢均适用磁场淬火工艺,用抗磁材料制作的磁场淬火夹错效果最佳。 相似文献
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介绍了磁场热处理的原理。论述了磁场对铁基合金相变热力学、相变过程和相变产物的影响。评述了经磁场退火、磁场淬火和磁场回火处理的结构钢、工具钢、低铬耐磨铸铁等材料的组织和性能以及产生磁场的方法及磁场热处理的工程应用和存在的问题。 相似文献
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M. H. Liu Z.H. Li X.Q. Yu J.R. Chen 《金属学报(英文版)》2005,18(6):773-776
1. Introduction As an applied computer science, numerical simulation makes much account of quenching process in heat treatment field. The computer simulation in quenching process has already extended to three-di- mension model. Both sample's thermal physi… 相似文献
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WANGYa-nan LIAODai-qiang WUZhan-jun 《材料热处理学报》2004,25(5):638-640
The experimental equipment designed by the author was used to carry out quenching treatments on Sr3 steel,with and without magnet it field in different quenching mediums. The effect of steady magnetic field on the phase transformation of Sr3 steel was studied by metallographic microscope and scanning electron microscope. The result shows: the application of magnetic field can obviously increase the volume fraction of ferrite during the austenite to ferrite transformation of Sr3 steel, promote the ferrite grains refining and homogenization, and get the pearlite beam much homogeneously and much compact, when Sr3 steel is quenched in the water. 相似文献
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V. V. Shulika A. P. Potapov N. I. Noskova 《The Physics of Metals and Metallography》2007,104(3):228-231
Magnetic properties of amorphous and nanocrystalline alloys with a saturation magnetostriction close to zero and a destabilized magnetic domain structure have been studied. A change in the magnetic characteristics has been investigated after two treatments leading to a destabilization of the domain structure: magnetic annealing in a high-frequency magnetic field of 80 kHz and quenching in water. It has been shown that the destabilization by both the first and the second methods markedly improves magnetic properties of amorphous alloys. Nevertheless, upon quenching of amorphous alloys a time-temperature instability of the magnetic properties has been observed. The quenching in water of the nanocrystalline alloys under study results in a deterioration of the magnetic properties. 相似文献
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The effects of a pulsed magnetic field on the solidified microstructure of an AZ31 magnesium alloy were investigated. The experimental results show that the remarkable microstructural refinement is achieved when the pulsed magnetic field is applied to the solidification of the AZ31 alloy. The average grain size of the as-cast microstructure of the AZ31 alloy is refined to 107 μm. By quenching the AZ31 alloy, the different primary α-Mg microstructures are preserved during the course of solidification. The microstructure evolution reveals that the primary α-Mg generates and grows in globular shape with pulsed magnetic field, contrast with the dendritic shape without pulsed magnetic field. The pulsed magnetic field causes melt convection during solidification, which makes the temperature of the whole melt homogenized, and produces an undercooling zone in front of the liquid/solid interface, which makes the nucleation rate increased and big dendrites prohibited. In addition, the Joule heat effect induced in the melt also strengthens the grain refinement effect and spheroidization of dendrite arms. 相似文献