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700MPa级低碳微合金高强钢生产工艺研究 总被引:1,自引:0,他引:1
对700MPa级低碳贝氏体钢采用不同的成分体系,通过改变生产工艺参数控制,达到满足700MPa级低碳贝氏体钢组织和性能的要求.同时为700MPa级低碳贝氏体钢提供灵活多样的生产方法,满足成本最低的需求. 相似文献
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从成分设计、生产工艺及实物质量控制等方面论述了安阳钢铁股份有限公司自主研发成功的低碳贝氏体钢AH70DB的生产特点.检验结果表明,通过自主设计成分、利用TMCP、无需任何热处理工艺所生产的AH70DB钢板完全达到了700 MPa级低碳贝氏体钢的技术要求,综合性能良好. 相似文献
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����� �������ƣ����������ï������»���ϴ��� 《钢铁研究学报》2013,25(11):1-5
The low carbon and alloying steel can obtain higher strength, better plasticity and toughness by bainitic strengthening. And through thermal mechanical control processing (TMCP) technology, the properties and microstructure of the steel could be controlled, so the low cost and high weldability can be ensured, thus, this steel grade process extensive prospect of development and application. But the bainitic steel with more than 900MPa yield strength has not produced through industrial-scale production for the complexity of bainite transformation. Therefore, the effect of microalloying elements was analyzed, mechanical properties of steel with various bainitic morphologies were compared, different preparing technologies applied to get bainite were summarized, and the characteristic destination microstructure of bainitic steel with yield strength of 900MPa and total elongation of 15% was presented. 相似文献
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钛、铌、硼对低碳贝氏体钢组织与性能的影响 总被引:4,自引:0,他引:4
以C-Mn钢和700 MPa级低碳贝氏体钢成分为基础成分,通过调整微合金元素含量,实验室条件下熔炼浇注钢锭,并采用TMCP技术轧制钢板,研究了微合金元素钛、铌、硼对低碳贝氏体钢组织与性能的影响。结果表明,随着铌含量的增加,贝氏体含量增加,晶粒变细,材料的抗拉强度、屈服强度与韧性均增加;随着钛含量的增加,贝氏体含量增加,抗拉强度、屈服强度提高,韧性的变化与是否进行回火处理有关;硼有利于形成板条贝氏体组织,硼含量增加能提高强度,但有损韧性。 相似文献