武晓燕,张花蕊,张虎,姜峰.新型Al-5Nb-RE-B合金组织和细化效果研究[J].稀有金属材料与工程,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.]
新型Al-5Nb-RE-B合金组织和细化效果研究
投稿时间:2016-11-05  修订日期:2017-06-19
中文关键词:  Al-5Nb-RE-B中间合金,晶粒细化,冷速敏感性
基金项目:国家重点研发计划项目2016YFB0300901
中文摘要:
      采用熔体反应制备了组织均匀的Al-5Nb-RE-B中间合金,研究了该中间合金对A356铝合金的细化效果。结果表面,添加1 wt.%的Al-5Nb-RE-B中间合金后,A356铝合金的晶粒度从原来的800um细化为200um。不同冷速下的研究结果表明,Al-5Nb-RE-B中间合金具有较低的冷速敏感性。
Microstructure and grain refinement performance of a new Al-5Nb-RE-B master alloy
英文关键词:Al-5Nb-RE-B master alloy  Grain refinement  Cooling rate sensitivity  A356 alloy
英文摘要:
      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.
作者单位E-mail
武晓燕 北京航空航天大学 wuxiaoyan@buaa.edu.cn 
张花蕊 北京航空航天大学 huarui@buaa.edu.cn 
张虎   
姜峰   
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