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OALib Journal期刊
ISSN: 2333-9721
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柱状晶对Fe-3%Si电工钢再结晶织构演变规律的影响
DOI: 10.3724/SP.J.1037.2011.00699, PP. 307-314
Keywords: 电工钢,柱状晶,织构,再结晶
Abstract:
在对长轴分别平行于板法向(ND)、轧向(RD)、横向(TD)的柱状晶样品冷轧组织及织构演变规律分析的基础上,利用XRD与EBSD技术,对不同退火温度下各样品再结晶织构的形成规律进行分析.结果表明,柱状晶样品再结晶织构的演变,一方面体现了初始取向晶粒的“遗传性”,即立方织构与Goss织构的形成;另一方面又展示了柱状晶样品不同于单晶及多晶的“特殊性”,即{113}织构的形成、Goss晶粒大大超过立方晶粒的生长能力及TD样品中{110}取向晶粒的消失.退火温度的变化在不同样品中可造成立方织构的增强或减弱,这取决于再结晶时的形核及长大环境,分析认为TD样品低温时形成最强的立方织构与其在冷轧过程中最强的晶界阻力有关.综合考虑各再结晶织构的转变规律,其形成与定向形核及定向长大均相关.研究还证实,3种柱状晶样品中等压下量冷轧并退火后都可抑制γ线织构的形成.
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