Fu, Licai and Yang, Jun and Bi, Qinling and Liu, Weimin (2009) Nanostructured Hypoeutectic Fe-B Alloy Prepared by a Self-propagating High Temperature Synthesis Combining a Rapid Cooling Technique. Nanoscale Research Letters, 4 (1). pp. 11-16. ISSN 1931-7573 (Print) 1556-276X (Online)
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We have successfully synthesized bulk nanostructured Fe94.3B5.7 alloy using the one-step approach of a self-propagating high temperature synthesis (SHS) combining a rapid cooling technique. This method is convenient, low in cost, and capable of being scaled up for processing the bulk nanostructured materials. The solidification microstructure is composed of a relatively coarse, uniformly distributed dendriteto a nanostructured eutectic matrix with Î±-Fe(B) and t-Fe2B phases. The fine eutectic structure is disorganized, and the precipitation Fe2B is found in the Î±-Fe(B) phase of the eutectic. The dendrite phase has the t-Fe2B structure rather than Î±-Fe(B) in the Fe94.3B5.7 alloy, because the growth velocity of t-Fe2B is faster than that of the Î±-Fe with the deeply super-cooling degree. The coercivity (Hc) and saturation magnetization (Ms) values of the Fe94.3B5.7 alloy are 11Â A/m and 1.74T, respectively. Moreover, the Fe94.3B5.7 alloy yields at 1430Â MPa and fractures at 1710Â MPa with a large ductility of 19.8% at compressive test.
|Uncontrolled Keywords:||Nanostructured eutectic - Fe94.3B5.7 alloy - Self-propagating high temperature synthesis (SHS) - Soft magnetic performance - Mechanical behavior|
|Subjects:||Material Science > Nanofabrication processes and tools|
Material Science > Nanostructured materials
|Deposited By:||Lesley Tobin|
|Deposited On:||19 Jan 2009 12:00|
|Last Modified:||19 Jan 2009 12:00|
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