Microstructure and properties of Ni85Al15 composite material blended with tungsten concentrate powder by laser synthesis
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Received Date:
2012-03-12
Accepted Date:
2012-05-08
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Abstract
In order to increase the hardness,strength and wear resistance of the compound material,based on the in-situ synthesis self-propagation reaction induced by high energy laser,the NiAl composite material was prepared by synthesizing the reinforced metal-ceramic hard particles.Added 0.01,0.015 and 0.02(mass fraction w) of tungsten concentrate powder respectively,combined hypereutectic Ni85Al15 powder was pressed into three kinds of billets.After sintering,the results of the the X-ray diffraction(XRD),secanning electron microscope(SEM),hardness and wear resistance of the sintering alloy were obtained.The results show that when the tungsten concentrate powder is not added,the main product phase of the sintering alloy are NiAl,Ni3Al and Al2O3;while if the tungsten concentrate powder is added,the sintering alloy products will produce Ni4W and WO3 phase on the side.When the mass fraction of tungsten is 0.01,the relative density of the sintering alloy is the biggest,which is 5.84g/cm3;the porosity rate is the lowest,which is 0.13%;the hardness rate of the sintering alloy is the highest,which is 325.2HK;the wear rate is the lowest,which is 0.27mg/mm2.The results show that the powder of tungsten concentrate can increase the hardness and wear resistance of the material,the material has the best hardness and wear resistance when its mass fraction is 0.01.
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References
|
[1]
|
ZHAN L.combustion synthesis reaction behaviors and mechanism of the Ni-Ti-C/B4C-BN systems[D].Changchun:Jilin University, 2010:7-8(in Chinese). |
|
[2]
|
YIN Sh.combustion synthesis[M].Beijing:Metallurgical Industry Press,2004:1-2,35-36(in Chinese). |
|
[3]
|
LI G,CHEN Y J,SHUI D L,et al.Preparation and properties of FeAl alloy by laser-induced self-propagating reaction synthesis[J]. Transactions of Materials and Heat Treatment,2011,32(4):17(in Chinese). |
|
[4]
|
MU B Ch,HAO D Zh,ZHOU X,et al.Effect of chemical composition on Ni-Al intermetallic compounds by self-propagation high-temperature synthesis[J].Powder Metallurgy Industry,2006,35(2):25-27(in Chinese). |
|
[5]
|
MOORE J J,FENG H J.combustion synthesis of advanced materials:PartⅠ.reaction parameters[J].Progress in Materials Science, 1995,39(4/5):243-273. |
|
[6]
|
PENG Ch Q,HUANG B Y,HE Y H.Development of intermetallic compound in Ni-Al,Fe-Al and Ti3Al base system[J].Special Casting&Nonferrous Alloys,2001(6):27-28(in Chinese). |
|
[7]
|
DONG H X,HE Y H.Progress in research on Ni3Al intermetallic alloys[J].Materials Science and Engineering of Powder Metallurgy, 2009,14(2):83-84(in Chinese). |
|
[8]
|
QIN L J.A fundamental study on combustion synthesis welding of NiAl metal powder materials and steels[D].Changchun:Jilin University,2009:1-2(in Chinese). |
|
[9]
|
FARAOUN H,AOURAG H,ESLING C,et al.Elastic properties of binary NiAl,NiCr and AlCr and ternary Ni2AlCr alloys from molecular dynamic and Abinitio simulation[J].computational Materials Science,2005,33(1/3):184-190. |
|
[10]
|
XING Zh P,HAN Y F.Development and application of melting and casting processes for intermetallics[J].Materials Review,2000,14 (3):26-28(in Chinese). |
|
[11]
|
WU Ch J,CHEN G L,QIANG W J.Metal material science[M]. Beijing:Metallurgical Industry Press,2008:273-274(in Chinese). |
|
[12]
|
ZHENG Y F.composition design and laser fabrication of nickelbased intermetallic compound alloys[D].Lanzhou:Lanzhou University of Technology,2008:4-6(in Chinese). |
|
[13]
|
XU Y,XU D,WANG Zh,et al.Melting and casting technology of intermetallics[J].Ordnance Material Science and Engineering, 1996,19(5):43-48(in Chinese). |
|
[14]
|
REN W L.Microstructure and mechanical properties of NiAl-based eutectic alloys and alloying behavior of rare earths[D].Dalian: Dalian University of Technology,2002:16-19(in Chinese). |
|
[15]
|
LIN W M,WEI Y H,HOU L F.Effect of alloy elements in Ni3Albased intermetallic compound[J].Materials Review,2008,22 (8):62-63(in Chinese). |
|
[16]
|
TENG Y.Study on the reaction joint and the structure property of laserinduced Ni-Al powder materials and stainless steel[D].Changchun: Jilin University,2008:12-13(in Chinese). |
|
[17]
|
JIANG S Y,LI Sh Ch.Analysis on valence electron structures and properties of intermetallic compounds in Ni-Al system[J].Materials Review,2010,24(9):72-75(in Chinese). |
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