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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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快速凝固Fe－6.5%Si合金有序结构及力学性能研究
DOI: 10.3724/SP.J.1037.2013.00521, PP. 1452-1456
Keywords: Fe－6.5%Si合金,快速凝固,有序相,反相畴界,TEM
Abstract:
通过单辊快速凝固的方法制备出宽度为20mm,厚度为35－50μm,连续成卷的Fe－6.5%Si合金薄带.与普通铸造方法相比,用快速凝固方法得到的Fe－6.5%Si合金具有良好的室温塑性.采用TEM及XRD研究了普通铸锭和快凝薄带的有序化结构和微观组织,并计算了这2种制备条件下B2有序相的长程有序度.结果表明,普通铸造方法得到的Fe－6.5%Si合金含有大量的B2和D03有序相,且有序度较高.而快凝薄带晶粒细小,快的冷却速率有效地抑制了D03有序相的形成,同时也降低了B2相的生长速度,使合金有序度较低,从而使带材塑性得到明显改善.
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