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| 1 | Microstructure and corrosion resistance of Fe-Al intermetallic coating on 45 steel synthesized by double glow plasma surface alloying technology显示文摘A binary Fe-Al alloyed layer was synthesized on 45 steel by means of double glow plasma surface alloying technique. The corrosion-resisting layer prepared is composed of a sedimentary layer and a diffusion layer, with a total thickness of about 180 μm. The aluminum content of the alloyed layer shows gradual change from surface to the inside of substrate. The ideal profile is beneficial to the metallurgical bonding of the surface alloying layer with substrate materials. The microstructure of both layers consists of the Fe-Al intermetallic compound, which is FeAl with B2 structure in the sedimentary layer and Fe3Al with incompletely ordered DO3 structure in the diffusion layer. The protective film exhibits high micro-hardness. In comparison with the substrate of 45 steel, the corrosion resistance of the aluminized sample is much higher in 2.0% Na2S and 0.05 mol/L Na2SO4 + 0.5 mol/L NaCl mixed solutions. | 朱晓林 姚正军 顾雪冬 丛伟 张平则 | 2009 | 中国有色金属学会会刊:英文版2009，19，1： | 12 |
| 2 | Fe-23Al合金有序畴表征和形成机制显示文摘利用金相、扫描、EBSD和透射等方法对Fe-23Al合金时效过程中的有序畴结构进行表征,并借助模拟手段分析有序畴形成的微观机制。结果表明:经高温固溶处理后,Fe-23Al合金中形成500μm的等轴晶粒,未发现有序畴。随后在625℃,1h时效时,晶粒内部形成沿着某一方向规则排列的有序畴。根据EBSD和TEM分析可以得知,有序畴和无序畴之间的取向差角保持为45°,主要是由于Fe-23Al合金时效过程中发生有序化转变。利用微观相场动力学模型对有序畴形成过程进行模拟,证实这种有序化转变的机制为失稳有序化。 | 赵荣达 来忠红 李飞 朱景川 张宝友 | 2012 | 稀有金属材料与工程2012，41，S2： | 2 |
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