Ni_3Al基金刚石工具制备初探
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摘要
基于Ni_3Al金属间化合物的优异抗氧化性及高温力学性能,提出了Ni_3Al基金刚石工具的结合剂体系和制备方法,研究了Ni_3Al结合剂中添加B和Ni-Cr合金对工具力学性能和微观结构的影响。实验结果表明,在纯Ni_3Al中添加0.1%的B可以明显提高金刚石工具的硬度和抗弯强度;而随着Ni-Cr合金含量的增加,金刚石工具的硬度和抗弯强度也随之增加。
Based on excellent oxidation resistance and high temperature mechanical properties of Ni_3Al intermetallic compounds,the bond system and preparation method of Ni_3Al based diamond tools were proposed.The effect of Ni_3Al bond with B and Ni-Cr alloys on the mechanical properties and microstructure of the tool was studied.The result shows that addition of 0.1%B can significantly improve the hardness and bending strength of Ni_3Al diamond tools.On the other side,with the increasing content of Ni-Cr alloy,the bending strength and the hardness of Ni_3Al based diamond tools is increased.
Based on excellent oxidation resistance and high temperature mechanical properties of Ni_3Al intermetallic compounds,the bond system and preparation method of Ni_3Al based diamond tools were proposed.The effect of Ni_3Al bond with B and Ni-Cr alloys on the mechanical properties and microstructure of the tool was studied.The result shows that addition of 0.1%B can significantly improve the hardness and bending strength of Ni_3Al diamond tools.On the other side,with the increasing content of Ni-Cr alloy,the bending strength and the hardness of Ni_3Al based diamond tools is increased.
引文
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[7]B.Huang,W.H.Xiong,Z.H.Yao,S.Chen,M.Zhang,Q.Q.Yang.Effect of WC content on microstructure and mechanical properties of Ni3Al-bonded cermets[J].Ceramics International,2016,42:5291-5298.
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[12]P.J.Zhou,J.J.Yu,X.F.Sun,H.R.Guan,Z.Q.Hu.The role of boron on a conventional nickel-based superalloy[J].Materials Science and Engineering,2008,A 491:159-163.63.
[2]X.P.Xu.Study on the thermal wear of diamond segmented tools in circular sawing of granites[J].Tribology Letters,2001,10(4):245-249.
[3]J.M.Molina-Jordá.Design of composites for thermal management:Aluminum reinforced with diamond-containing bimodal particle mixtures[J].Composites:Part A,2015,70:45-51.
[4]J.J Wang,W.G.Guo,Y.Su,P.Zhou,K.B.Yuan.Anomalous behaviors of a single-crystal nickel-base super alloy over a wide range of temperatures and strain rates[J].Mechanics of Materials,2016,94:79-90.
[5]J.Lapin.High temperature creep of precipitation-strengthened Ni3Al-based alloy[J].Intermetallics 1999,7:599-609.
[6]X.Q.Li,M.N.Zhang,D.H.Zheng,T.Cao,J.Chen,S.G Qu.The oxidation behavior of the WC-10 wt.%Ni3Al composite fabricated by spark plasma sintering[J].Journal of Alloys and Compounds,2015,629:148-154.
[7]B.Huang,W.H.Xiong,Z.H.Yao,S.Chen,M.Zhang,Q.Q.Yang.Effect of WC content on microstructure and mechanical properties of Ni3Al-bonded cermets[J].Ceramics International,2016,42:5291-5298.
[8]K.Zhang,Z.J.Zhang,X.X.Lu,K.Li,Y.Du,J.Z.Long,T.Xu,H.Zhang,L.Chen,Y.Kong.Microstructure and composition of the grain/binder interface in WC-Ni3Al composites[J].International Journal of Refractory Metals and Hard Materials,2014,44:88-93.
[9]Y.M.Zhou,F.L.Zhang,C.Y.Wang.Effect of Ni-Al SHS reaction on diamond grit for fabrication of diamond tool material[J].International Journal of Refractory Metals&Hard Materials,2010,28:416-423.
[10]F.L.Zhang,Z.F.Yang,Y.M.Zhou,C.Y.Wang,H.P.Huang.Fabrication of grinding tool material by the SHS of Ni–Al/diamond/dilute[J].International Journal of Refractory Metals and Hard Materials,2011,29:344-350.
[11]Nasu T,Koch C C,Edwards A M,Sayers D E.An EXAFS study of structural changes induced by mechanical milling of the Ni3Al ordered intermetallic compound[J].Journal of non-crystalline solids,1992,150(1-3):491-496.
[12]P.J.Zhou,J.J.Yu,X.F.Sun,H.R.Guan,Z.Q.Hu.The role of boron on a conventional nickel-based superalloy[J].Materials Science and Engineering,2008,A 491:159-163.63.