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中文摘要: 利用Al、Ti、C粉末原料,采用铝熔体热爆法合成了相同成分不同微观组织形貌的两种Al-Ti-C中间合金晶粒细化剂.借助X射线衍射(XRD)、大型光学显微镜(MEF3)等分析手段研究了重熔保温时间对Al-Ti-C中间合金微观组织及细化效果的影响.结果表明:合成的两种Al-Ti-C中间合金均由Al、TiAl3和TiC组成.重熔时,保温时间对Al-Ti-C中间合金微观组织产生重要影响.随着重熔保温时间的延长,TiAl3会发生聚集、长大,而TiC颗粒有聚集倾向,但保温过程中,TiAl3和TiC相表现出较强的稳定性,并没有生成其他杂相如Al4C3等.重熔后的Al-Ti-C中间合金仍具有一定的晶粒细化能力.
中文关键词: Al-Ti-C中间合金 重熔保温时间 晶粒细化
Abstract:The effects of the holding time of remelting on the microstructure and grain refining performanc of Al-Ti-C master alloy with the same composition and different structural morphologies prepared by thermal explosion method of self-propagating high-temperature synthesis(SHS) in aluminum liquid with Al,Ti,C powder have been observed by X-ray diffraction(XRD),large optical microscope(MEF3),and other means.The results show that two kinds of the Al-Ti-C are composed by TiAl3,TiC and Al.The holding time of remelti...
文章编号： 中图分类号：TG146.21 文献标志码：
基金项目:国家863计划项目，甘肃省自然科学基金项目
DING Wan-wu ZHAO Wen-jun XIA Tian-dong HOU Yun-feng
DING Wan-wu,ZHAO Wen-jun,XIA Tian-dong,HOU Yun-feng(State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou 730050,China,Key Laboratory of Non-ferrous Metal Alloys,The Ministry of Education,China)
引用文本：
丁万武,赵文军,夏天东,侯运丰.重熔保温时间对Al-Ti-C中间合金微观组织及细化性能的影响[J].有色金属（冶炼部分）,2008(6):.
.Effects of the Holding Time of Remelting on the Microstructure and Grain Refining Performanc of Al-Ti-C Master Alloy[J].Nonferrous Metals (Extractive Metallurgy),2008(6):.
丁万武,赵文军,夏天东,侯运丰.重熔保温时间对Al-Ti-C中间合金微观组织及细化性能的影响[J].有色金属（冶炼部分）,2008(6):.
.Effects of the Holding Time of Remelting on the Microstructure and Grain Refining Performanc of Al-Ti-C Master Alloy[J].Nonferrous Metals (Extractive Metallurgy),2008(6):.
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