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原位反应TiC颗粒对喷射沉积Al-20Si-5Fe合金微观组织的影响
引用本文:杨滨,王锋,黄赞军,段先进,张济山.原位反应TiC颗粒对喷射沉积Al-20Si-5Fe合金微观组织的影响[J].北京科技大学学报,2001,23(1):24-27.
作者姓名:杨滨  王锋  黄赞军  段先进  张济山
作者单位:北京科技大学新金属材料国家重点实验室,
基金项目:国家自然科学基金;59774032;
摘    要:利用熔铸-原位反应喷射沉积成形技术制备了TiC颗粒增强Al-20Si-5Fe复合材料,分析了内生TiC颗粒对喷射沉积Al-20Si-5Fe合金微观组织的影响。结果表明:喷射沉积Al-20Si-5Fe合金微观组织中常出现脆性、针状的Al-Si-Fe三元金属间化合物相,在Al-20Si-5Fe合金中内生一定量的TiC颗粒,有助于减小粗晶Si颗粒的尺寸、消除针状的Al-Si-Fe三元金属间化合物相。

关 键 词:原位反应  微观组织  碳化钛颗粒  快速凝固组织  喷射沉积成形  过共晶铝-硅合金  沉积态
修稿时间:2000年1月18日

Effect of in situ TiC Particulate on the Microstructure of Spray Deposited Al-20Si-5Fe Alloy
YANG Bin,WANG Feng,HUANG Zanjun,DUAN Xianjing,ZHANG Jishan.Effect of in situ TiC Particulate on the Microstructure of Spray Deposited Al-20Si-5Fe Alloy[J].Journal of University of Science and Technology Beijing,2001,23(1):24-27.
Authors:YANG Bin  WANG Feng  HUANG Zanjun  DUAN Xianjing  ZHANG Jishan
Abstract:A TiC/A1-20Si-5Fe composite is fabricated by melt in situ reaction spray forming and effect of in situ TiC particulate on the microstructure of spray-deposited Al-20Si-5Fe alloy is studied. Both theoretical and experimental results have shown that some Al-Si-Fe intermetallic phases with needle-like structure exist in the spray-deposited Al-20Si-5Fe alloy, which is harmful to the tensile properties of the composites. The needle- like intermetallic phases can be entirely absent in the final product after 5%Tic (mass fraction) particulates are in situ formed in spray-deposited Al-20Si-5Fe alloy.
Keywords:insitur eaction  Tic particulate  spray forming  hypereutectic Al-Si alloy  microstructure
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