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新型Al-5Nb-RE-B合金組織和細(xì)化效果研究
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北京航空航天大學(xué),北京航空航天大學(xué),,

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國家重點研發(fā)計劃項目2016YFB0300901


Microstructure and grain refinement performance of a new Al-5Nb-RE-B master alloy
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Beihang University,Beihang University,,

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National Key Research Project

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    摘要:

    采用熔體反應(yīng)制備了組織均勻的Al-5Nb-RE-B中間合金，研究了該中間合金對A356鋁合金的細(xì)化效果。結(jié)果表面，添加1 wt.%的Al-5Nb-RE-B中間合金后，A356鋁合金的晶粒度從原來的800um細(xì)化為200um。不同冷速下的研究結(jié)果表明，Al-5Nb-RE-B中間合金具有較低的冷速敏感性。

    Abstract:

    The Al-5Nb-RE-B master alloy with a uniform microstructure has been prepared using melt reaction method. The effect of Al-5Nb-RE-B inoculation on aluminum alloy A356 for their grain refinement has been studied. It was found that the grain size of A356 alloy can be reduced from 800 μm to 200 μm by the addition of 1wt.% of the prepared Al-5Nb-RE-B master alloy. The in-depth analysis of the alloys solidified under wide range of cooling rates indicated that Al-5Nb-RE-B inoculation does not only lead to a much finer microstructural features but also makes the final grain size far less sensitive to the cooling rate employed to solidify the material.

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武曉燕,張花蕊,張虎,姜峰.新型Al-5Nb-RE-B合金組織和細(xì)化效果研究[J].稀有金屬材料與工程,2018,47(7):2017~2022.[Wu Xiaoyan, Zhang Huarui, Zhang Hu, Jiang Feng. Microstructure and grain refinement performance of a new Al-5Nb-RE-B master alloy[J]. Rare Metal Materials and Engineering,2018,47(7):2017~2022.]
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  • 收稿日期:2016-11-05
  • 最后修改日期:2017-06-19
  • 錄用日期:2017-06-26
  • 在線發(fā)布日期: 2018-10-10
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