孟宏杰,董天顺.细晶Al-Ti-B对铝合金TIG焊缝组织的影响[J].有色金属工程,2019,9(9):.
细晶Al-Ti-B对铝合金TIG焊缝组织的影响
Effect of fine-grain Al-Ti-B on TIG weld microstructure of aluminum alloy
投稿时间:2018-11-16  修订日期:2018-12-12
DOI:
中文关键词:  铝合金  铝钛硼孕育剂  焊缝组织  细化
英文关键词:aluminum alloy  Al-Ti-B master alloy  weld microstructure  refinement
基金项目:
     
作者单位
孟宏杰 唐山工业职业技术学院 机械工程系
董天顺 河北工业大学
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中文摘要:
      为了探索不同晶粒尺度的孕育剂对铝合金焊缝组织的影响,通过铜模喷铸法制备了细晶Al-Ti-B孕育剂,并对比研究了粗晶和细晶Al-Ti-B对1100铝合金TIG焊焊缝组织的影响和细化机理。结果表明,粗晶和细晶Al-Ti-B均可使1100铝合金焊缝组织得到细化,但是经过铜模喷铸法制备的细晶Al-Ti-B中的TiAl3和TiB2相更细小、分布弥散,因此对铝焊缝组织的细化效果更好。因此,Al-Ti-B孕育剂与铝合金焊缝的组织之间存在遗传关系,而通过细化Al-Ti-B的组织,则可以有效增强其对铝合金焊缝组织的细化能力。
英文摘要:
      In order to explore the effect of inoculants with different grain sizes on the weld microstructure of aluminum alloy, fine grain Al-Ti-B was prepared by melt rapid quenching method, and the effect of coarse grain and fine grain Al-Ti-B on the microstructure of TIG weld of 1100 aluminum alloy and the refining mechanism were studied. The results show that both coarse grain and fine grain Al-Ti-B can refine the microstructure of 1100 aluminum alloy weld, but the TiAl3 and TiB2 phases in fine grain Al-Ti-B prepared by melt rapid quenching are finer and more dispersed, so the refining effect on the microstructure of aluminum weld is better. Therefore, there is heredity between Al-Ti-B inoculant and weld structure of aluminum alloy,and the refining ability of Al-Ti-B can be effectively enhanced by refining its microstructure.
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