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原位合成VC和TiC颗粒对Fe3Al基合金显微组织的影响
引用本文:徐文雷,孙扬善,丁绍松.原位合成VC和TiC颗粒对Fe3Al基合金显微组织的影响[J].东南大学学报(自然科学版),2001,31(5):39-42.
作者姓名:徐文雷  孙扬善  丁绍松
作者单位:东南大学材料科学与工程系
基金项目:国家高技术研究发展计划(863计划),0122,
摘    要:以Fe3Al金属间化合物作为基体,采用反应铸造法制备了含VC,TiC颗粒Fe3Al基合金并研究了颗粒相在Fe3Al合金中的形成机理及颗粒相的加入对Fe3Al基合金显微组织结构的影响。结果表明,TiCp在高温液态熔体中原位合成,且在基体中均匀分布,可以作为异质形核核心而细化Fe3Al基合金铸定组织,从而改善Fe3Al合金的热加工性能;VCp是在固相中形核并长大的,对铸态组织的细化作用下明显,但其对热加工后再结晶组织的细化作用甚于TiCp。

关 键 词:Fe3Al  VC  TiC  形成机理  铁铝基合金  显微组织  原位合成  碳化钛  金属间化合物  碳化钒  颗粒相
文章编号:1001-0505(2001)05-0039-04

Effect of In-Situ VC and TiC Particles on Microstructureof Fe3Al-Based Alloys
Xu Wenlei,Sun Yangshan,Ding Shaosong.Effect of In-Situ VC and TiC Particles on Microstructureof Fe3Al-Based Alloys[J].Journal of Southeast University(Natural Science Edition),2001,31(5):39-42.
Authors:Xu Wenlei  Sun Yangshan  Ding Shaosong
Abstract:Fe 3Al-based alloys containing VC and TiC particles are fabricated by melting and casting process. The formation mechanism of particles and effects of particles on microstructure of Fe 3Al-based alloys are investigated. The results show that TiC particles, which are in-situ formed in melt, result in the significant microstructural refinement and the improvement of the hot-working ability of the ingots. While VC particles, which are formed during the solidification process of the melt, have no effect on as-cast microstructure, however, they cause remarkable refinement of the recrystallized microstructure.
Keywords:Fe  3Al  VC  TiC  formation mechanism  microstructure
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