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采用平面流铸技术制备了Fe-3%Si无取向硅钢极薄带,研究了平面流铸Fe-3%Si薄带平整轧制与退火处理的组织织构演变规律。结果表明,平面流铸带具有大比率的柱状晶组织,{100}取向晶粒占比高于30%,也即存在对磁性能有益的{100}织构。小压下率冷轧平整过程中,晶粒取向变化及晶内取向分裂程度整体不高,形变行为存在取向依赖性。{100}取向晶粒形变储能积累程度相对较低,经退火处理后该组分体现出遗传优势,在退火组织中占比仍超过30%。退火组织中小尺寸晶粒有所增加,且绝大部分小尺寸晶粒偏离{100}取向,这导致了退火组织平均晶粒尺寸降低,并在一定程度上弱化{100}织构。 相似文献
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为开发磁性能优良的0.20 mm薄规格取向硅钢,对该取向硅钢的组织特征,不同冷轧压下率和高温退火气氛对磁性能的影响进行了研究。结果表明:所获得的0.20 mm薄规格取向硅钢成品组织二次再结晶完全,铁损(P1.7/50)为0.89 W/kg,磁感(J800)为1.906 T;热轧和常化1/8层的主要织构组分为Goss织构,冷轧织构为较强的{001}〈110〉,退火织构主要为{411}〈148〉,脱碳晶粒尺寸约为21.17 μm,Goss晶粒极少;0.20 mm薄规格取向硅钢合适的冷轧压下率为91.3 %;高温退火升温段合适的气氛为75% N2。 相似文献
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退火温度对无取向硅钢组织结构的影响 总被引:1,自引:0,他引:1
本文研究了退火温度对无取向硅钢晶粒大小、晶体织构的影响。随着退火温度的升高,平均晶粒尺寸增加。在低温段。随着退火温度的升高,对磁性能不利的织构组分减弱。在高温段,织构随退火温度变化正好与低温段相反。退火温度通过影响晶粒尺寸和晶体织构对磁性能有明显的影响。 相似文献
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为了研究中/高频用超薄取向硅钢制备工艺中退火温度对组织、织构及磁性能的影响,以商用0.27 mm规格无底层取向硅钢成品板为原料采用初次再结晶法制备了0.08 mm厚的超薄取向硅钢。系统研究了800~1 000 ℃温度范围内退火对超薄取向硅钢退火组织、织构及磁性能的影响。结果表明,过渡带中的η取向({0kl}<100>)与相邻形变基体呈大角度取向差晶界,再结晶开始时,η取向组分优先在过渡带边界“弓出”形核;随着退火温度升高,再结晶平均晶粒尺寸增大,{114}<481>等非η取向晶粒尺寸优势愈发明显,η组分体积占比降低,晶粒尺寸均匀性变差;稍低温退火时超薄取向硅钢综合磁性能较好,退火温度为800 ℃时,磁感应强度B800=1.82 T,铁损P1.5/400=11.66 W/kg,获得本试验条件下最佳综合中频磁性能。 相似文献
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《武钢技术》2020,(3)
为研究稀土钇(Y)对冷轧高硅钢薄板磁性能的影响规律,以3种不同Y含量(无稀土,含0.012%Y,含0.030%Y)的6.5%Si高硅钢为研究对象,采用了热轧、温轧、冷轧及退火工艺制备出了0.2mm厚高硅钢成品板。利用金相显微镜(OM)、扫描电镜(SEM)及电子背散射衍射(EBSD)技术分析了稀土Y对其组织、织构和磁性能的影响。研究结果表明,随着Y含量的增加,高硅钢冷轧板成品退火后平均晶粒尺寸逐渐降低,分别为194μm、125μm和84μm;对磁性能有利的{100}面织构不断减弱,η(〈100〉//RD)织构强度先增后减,而对磁性能不利的γ(〈111〉//ND)织构先减弱后增强。当Y的质量分数为0.012%时,尽管在50~1 000Hz频率下的铁损值相比无稀土高硅钢略有增加,但磁感B50最高,达到了1.647T,归因于η织构的增强与γ织构的减弱。 相似文献
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正With the signing of"Letter of intention for Propelling Integration of Shandong Rare Earth Enterprises"between Shandong Province Commission Of Economy and Informatization,China IronSteel Research Institute Group("China Steel Institute"),and China Rare MetalsRare Earth Co.,Ltd("China Rare Earth"),the"Shandong Rare Earth Group"jointly set up by the 3 units thus broke surface.On August 9,reporters of the China Economic Herald learned from Shandong Province 相似文献
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正In the face of the current situation of the lost WTO dispute on rare earth,and cancellation of export tariff for partial rare earth products,efforts of regulation and integration on rare earth by the state government will again be tightened.Reporters of the Economic Information Daily recently learned from authoritative sources that relevant ministries are 相似文献
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正Last month,Chinalco signed framework agreement for strategic cooperation with Harbin Municipal Government in Harbin Xiong Weiping,Chairman of Chinalco,said that based on the strategic deployment to build world top-class mining company with the highest growth potential,Chinalco was now concentrating all efforts on making strategic transition and structural adjustment,strategic cooperation with the local governments where 相似文献
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《Baosteel Technical Research》2014,8(4)
正Baosteel Technical Research,a quarterly journal,which is issued domestically and abroad,is run and sponsored by Baosteel Group Corporation.Baosteel Technical Research mainly reports the achievements in technological innovation,academic research,new product development and industrial equipment improvement by Baosteel.It will continue to follow up on hot topics and serve the company’s technological development and progress.Its readers include experts in 相似文献