| 50W540型无取向硅钢的时效行为 |
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| 引用本文： | 许令峰,毛卫民,孟利. 50W540型无取向硅钢的时效行为[J]. 金属热处理, 2009, 34(7): 42-45 |
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| 作者姓名： | 许令峰 毛卫民 孟利 |
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| 作者单位： | 北京科技大学,材料学系,北京,100083山东农业大学,机电学院,山东,泰安,271018;北京科技大学,材料学系,北京,100083;北京科技大学,新金属材料国家重点实验室,北京,100083;北京科技大学,材料学系,北京,100083 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 研究了50W540型无取向硅钢中MnS粒子在300～700℃时效处理0.75～24 h不同时间时效析出行为与铁损变化的关系.结果表明,α-Fe基体中过饱和的Mn、S原子以MnS粒子形式沿位错析出,Mn原子的扩散距离是析出行为的制约因素.700℃时效时过饱和度低、Mn扩散快而MnS粒子易粗化,铁损降低.400～600℃时效时过饱和度高、MnS粒子析出数量增多,铁损升高.400℃以下时效时过饱和度很高,但Mn扩散慢,使细小MnS粒子难以析出且铁损无明显变化.
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| 关 键 词： | 无取向硅钢 时效 铁损 扩散 |
Aging behavior of 50W540 non-oriented silicon steel |
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| XU Ling-feng,MAO Wei-min,MENG Li. Aging behavior of 50W540 non-oriented silicon steel[J]. Heat Treatment of Metals, 2009, 34(7): 42-45 |
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| Authors: | XU Ling-feng MAO Wei-min MENG Li |
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| Affiliation: | XU Ling-feng1,2,MAO Wei-min1,3,MENG Li1 |
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| Abstract: | The relationship between the aging behavior of MnS particles in 50W540 non-oriented silicon steel aged at 300-700℃ for 0.75-24h and the core losses was investigated.The results show that the oversaturated Mn and S atoms precipitate along dislocations in the form of MnS particles.The diffusion distance of Mn atoms is the restraining factor for the precipitation behavior.When aging at 700℃,the supersaturation is low,the diffusion of Mn atoms is fast,MnS particles are easily coarsened,and the core loss is reduced.While aging at 400-600℃,the supersaturation is high,the number of MnS particles precipitated is large,and the core loss is increased.The MnS particles can hardly be precipitated aging at temperature below 400℃ though the supersaturation is high,while the Mn atoms diffuse slowly and therefore core loss has no substantial change. |
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| Keywords: | non-oriented silicon steel aging core loss diffusion |
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