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《材料导报》期刊社  2018, Vol. 32 Issue (4): 598-601    https://doi.org/10.11896/j.issn.1005-023X.2018.04.018
  材料研究 |
Al-Bi过偏晶合金凝固过程中富Bi相分布规律研究
康智强1, 张煜博1, 杨雪1, 冯国会1, 张林2
1 沈阳建筑大学市政与环境工程学院,沈阳 110168;
2 东北大学材料电磁过程研究教育部重点实验室,沈阳 110004
Distribution Law of Rich Bi Phase in Al-Bi Monotectic Alloy During the Solidification Process
KANG Zhiqiang1, ZHANG Yubo1, YANG Xue1, FENG Guohui1, ZHANG Lin2
1 School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168;
2 Key Laboratory of Electromagnetic Processing of Material of Ministry of Education, Northeastern University, Shenyang 110004
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摘要 在常规重力场条件下,通过极快速液淬冷却的实验方法,分析了Al-Bi过偏晶合金在难混溶区凝固过程中,不同凝固时刻和温度下富Bi相液滴的形核、扩散长大、Marangoni迁移、重力沉降和碰撞凝并等复杂的物理过程,考察了富Bi相液滴平均直径及最大直径等随时间变化的分布规律,揭示了偏晶合金宏观偏析的形成过程与影响因素的作用程度,为制备匀质偏晶合金提供理论参考和实验依据。
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康智强
张煜博
杨雪
冯国会
张林
关键词:  Al-Bi合金  宏观偏析  凝固  Marangoni迁移  碰撞凝并    
Abstract: Complicated physical processes including nucleation, diffusional growth, Marangoni migration, gravity migration and collision coagulation of rich Bi droplets under different solidification time and temperature during the solidification of Al-Bi alloys though very fast liquid quenching cooling experiment in normal gravity condition were analyzed. The average and max diameter of drops, as well as the distribution regularity of the max drops with time variation were studied. The formation of macro segregation of monotectic alloys and its influencing factors were also revealed. Theoretical reference and experimental foundation were provided to prepare uniformity monotectic alloys.
Key words:  Al-Bi alloys    macrosegregation    solidification    Marangoni migration    collision coagulation
               出版日期:  2018-02-25      发布日期:  2018-02-25
ZTFLH:  TG146  
基金资助: 国家自然科学基金(51401133); 辽宁省科学技术基金(20141074); 辽宁省教育厅科学研究项目(L2014230); 沈阳建筑大学学科研究项目(2017026)
作者简介:  康智强:女,1980年生,博士,副教授,研究方向为磁场作用下偏晶合金的相分离和组织形成规律 E-mail:kangzhiqiang101915@163.com
引用本文:    
康智强, 张煜博, 杨雪, 冯国会, 张林. Al-Bi过偏晶合金凝固过程中富Bi相分布规律研究[J]. 《材料导报》期刊社, 2018, 32(4): 598-601.
KANG Zhiqiang, ZHANG Yubo, YANG Xue, FENG Guohui, ZHANG Lin. Distribution Law of Rich Bi Phase in Al-Bi Monotectic Alloy During the Solidification Process. Materials Reports, 2018, 32(4): 598-601.
链接本文:  
http://www.mater-rep.com/CN/10.11896/j.issn.1005-023X.2018.04.018  或          http://www.mater-rep.com/CN/Y2018/V32/I4/598
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