原位冶金法合成Nb-Al基金属间化合物
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摘要
以Nb-Fe、Al粉为原料,通过自耗电极直流电弧原位冶金制备不同成分的Nb-Al基金属间化合物。利用X射线衍射仪、扫描电镜和金相显微镜对其显微组织进行分析,结果表明含Ni元素的金属间化合物裂纹敏感性较低,且含Ni的金属间化合物显微组织多呈不规则大面积块状,且边缘圆润无棱角,含Ni的金属间化合物能提高延性及韧性。
Nb-Al intermetallics compounds with were prepared by the technology of the consutrode DC are in-situ metallurgy using Nb-Fe and Al powder as raw materials.The microstructure was performed with X-ray diffractometers, scanning electron microscopy and metallographic microscope.The results showed that intermetallics compounds containing Ni had crack sensitivity lower and the microstructure of intermetallics compounds containing Ni was mostly irregular,large area blocks, and the edges are round and angular, so the intermetallic compounds containing Ni can increase ductility and toughness.
Nb-Al intermetallics compounds with were prepared by the technology of the consutrode DC are in-situ metallurgy using Nb-Fe and Al powder as raw materials.The microstructure was performed with X-ray diffractometers, scanning electron microscopy and metallographic microscope.The results showed that intermetallics compounds containing Ni had crack sensitivity lower and the microstructure of intermetallics compounds containing Ni was mostly irregular,large area blocks, and the edges are round and angular, so the intermetallic compounds containing Ni can increase ductility and toughness.
引文
[1]罗民,陈焕铭,王怀昌,何力军,李星.Nb-Al系金属间化合物及其复合材料研究进展[J].中国有色金属学报,2011,01:72-79.
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[6]LIU C T,STIEGLER J O.Ductile orderedintermetallicalloys[J].Science,1984,226(4675):636-642.
[7]贺跃辉等.NiAl金属间化合物的研究进展[J].粉末冶金材料科学与工程,2004,9(2):112-121.
[8]RIOS C T,MILENKOVIC S,CARAM R.Directional growth of Al-Nb-X eutectic alloys[J].Journal of Crystal Growth,2000,211(1/4):466-470.
[9]迟静.直流电弧直流电弧原位冶金粗晶碳化钨块体复合材料研究[J].中国有色金属学报,2013,23(5):1262-1265.
[10]王锦程,张玉祥,杨玉娟等.多元合金枝晶生长形态转变及显微偏析的相场法研究[J].中国科学,2008,30(11)1921-1929.
[11]齐义辉,郭建亭,崔传勇.定向凝固Ni Al-Fe-Nb金属间化合物的显微组织和类超塑性行为[J].中国有色金属学报,2002,12(2):245-248.
[2]刘震云,林栋梁等.NiAl金属间化合物研究现状[J].机械工程材料,1998,22(2):1-5.
[3]陈国良.金属间化合物结构材料研究现状与发展[J].材料导报,2000,09:1-5.
[4]林栋梁.高温有序金属间化合物研究的新进展[J].上海交通大学学报,1998,32(2):95-106.
[5]HANADA S,TABARU T,GNANAMOORTHY R.Processing and properties of Nb3Al alloys[J].Acta Metallurgica Sinica:English Letters,1995,8(4/6):477-487.
[6]LIU C T,STIEGLER J O.Ductile orderedintermetallicalloys[J].Science,1984,226(4675):636-642.
[7]贺跃辉等.NiAl金属间化合物的研究进展[J].粉末冶金材料科学与工程,2004,9(2):112-121.
[8]RIOS C T,MILENKOVIC S,CARAM R.Directional growth of Al-Nb-X eutectic alloys[J].Journal of Crystal Growth,2000,211(1/4):466-470.
[9]迟静.直流电弧直流电弧原位冶金粗晶碳化钨块体复合材料研究[J].中国有色金属学报,2013,23(5):1262-1265.
[10]王锦程,张玉祥,杨玉娟等.多元合金枝晶生长形态转变及显微偏析的相场法研究[J].中国科学,2008,30(11)1921-1929.
[11]齐义辉,郭建亭,崔传勇.定向凝固Ni Al-Fe-Nb金属间化合物的显微组织和类超塑性行为[J].中国有色金属学报,2002,12(2):245-248.