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在大气中利用循环过热与熔融玻璃净化相结合的方法,使6-20gFe76B12Si12合金液获得了367K的大过冷度采用深过冷及深过冷加水淬的方法,成功地制备了样品直径为11mm,高为10mm组织中颗粒平均尺寸约为200nm的FeveB12Si12合金块体纳米材料研究结果表明;在ΔT=367K再辉后自然冷却至室温及ΔT=329K再辉后水淬条件下,凝固组织为在细化的Fe2B(Si)基体中分布30-400nm的α-Fe(Si)颗粒;在ΔT=354K再辉过程中水淬条件下,凝固组织为在α-Fe(Si)基体中均匀分布30-350nm的Fe2B(Si)颗粒在所有条件下沿试样直径方向的组织均存在不均匀性,初始过冷度及冷却速度提高,组织的不均匀性减小对这些结果的产生及该合金组织细化至纳米级的原因进行了讨论
In the atmosphere by the combination of circulating overheating and the purification of molten glass, so that 6-20g Fe76B12Si12 alloy obtained a 367K large degree of supercooling by deep sub-cooling and deep sub-cooling plus water quenching method successfully prepared a sample diameter of 11mm , The height of 10mm microstructure of the average particle size of about 200nm FeveB12Si12 alloy bulk nanomaterials showed that; ΔT = 367K after re-cooling and then cooled to room temperature and ΔT = 329K after re-quenching conditions, the solidified tissue is Α-Fe (Si) particles with 30-400nm were distributed in the refined Fe2B (Si) matrix. Under the water quenching condition of ΔT = 354K, the solidified microstructure was uniformly distributed in the matrix of α-Fe The microstructure of the Fe2B (Si) particles at -350 nm along the diameter of the sample is inhomogeneous under all the conditions. The initial undercooling and the cooling rate are increased, and the nonuniformity of the microstructure is reduced. The generation of these results and the microstructure of the alloy The reason for the refinement to nanoscale is discussed