钼含量对添加预合金粉制备TiC-高锰钢钢结硬质合金组织与性能的影响
|
摘要
以Fe-Mo-C预合金粉、FeMn84C0.4合金粉、镍粉、石墨粉和TiC粉为原料,经烧结得到以高锰钢为黏结相、TiC为硬质相的不同钼含量TiC-高锰钢钢结硬质合金,研究了钼含量对该钢结硬质合金组织与性能的影响。结果表明:随着钼含量的增加,钢结硬质合金组织中TiC颗粒的尺寸先减小后增大,其表面形成了(Ti,Mo)C固溶体相;与添加纯钼粉的相比,添加含钼预合金粉所得钢结硬质合金中的TiC颗粒更细小,圆整度更好,且表面更易形成(Ti,Mo)C固溶体相;随着钼含量的增加,钢结硬质合金的相对密度、硬度、抗弯强度和冲击韧度均先增大后减小,当钼质量分数为1.15%时均达到最大,组织和综合性能较佳。
With Fe-Mo-C pre-alloyed powder,FeMn84 C0.4 alloy powder,Ni powder,graphite powder and TiC powder as raw materials,TiC-high Mn steel bonded carbide containing different Mo content,with high Mn steel as adhesive phase and TiC as hard phase,was prepared by sintering.Effects of Mo content on the microstructure and properties of the steel-bonded carbide were studied.The results show that with increasing Mo content,the size of TiC particles in microstructure of the steel-bonded carbide decreased first and then increased,and on surfaces formed(Ti,Mo)C solid solution phase.When being compared with those by adding pure Mo powder,TiC particles in the steel-bonded carbide obtained by adding Mo-containing pre-alloyed powder were relatively fine and relatively round and regular,and(Ti,Mo)C solid solution phase formed relatively easily.With the increase of Mo content,the relative density,hardness,rupture strength and impact toughness of the steel-bonded carbide increased first and then decreased,and reached largest values with Mo content of 1.15 wt%;the microstructure and comprehensive properties were relatively good.
With Fe-Mo-C pre-alloyed powder,FeMn84 C0.4 alloy powder,Ni powder,graphite powder and TiC powder as raw materials,TiC-high Mn steel bonded carbide containing different Mo content,with high Mn steel as adhesive phase and TiC as hard phase,was prepared by sintering.Effects of Mo content on the microstructure and properties of the steel-bonded carbide were studied.The results show that with increasing Mo content,the size of TiC particles in microstructure of the steel-bonded carbide decreased first and then increased,and on surfaces formed(Ti,Mo)C solid solution phase.When being compared with those by adding pure Mo powder,TiC particles in the steel-bonded carbide obtained by adding Mo-containing pre-alloyed powder were relatively fine and relatively round and regular,and(Ti,Mo)C solid solution phase formed relatively easily.With the increase of Mo content,the relative density,hardness,rupture strength and impact toughness of the steel-bonded carbide increased first and then decreased,and reached largest values with Mo content of 1.15 wt%;the microstructure and comprehensive properties were relatively good.
引文
[1]范安平,肖平安,李晨坤,等.TiC基钢结硬质合金的研究现状[J].粉末冶金技术,2013,31(4):298-303.
[2]王鑫,吴一,龙飞,等.TiC钢结硬质合金的研究进展[J].材料导报,2007,21(8):72-75.
[3]WANG Z A,DAI H Y,ZOU Y.Effects of nano TiN addition on the microstructure and mechanical properties of TiC based steel bonded carbides[J].Rare Metals,2008,27(1):5-8.
[4]TSINJAN A,KLAASEN H,KUBARSEPP J,et al.Influence of sintering techniques on the performance characteristics of steel-bonded TiC-based cermets[J].Estonian Journal of Engineering,2009,15(4):283-292.
[5]刘东华,汤波.TiC高锰钢钢结硬质合金微观结构研究[J].金属材料与冶金工程,2012,40(6):8-11.
[6]JING T F,ZHANG F C.The work-hardening behavior of medium manganese steel under impact abrasive wear condition[J].Materials Letters,1997,31(3/4/5/6):275-279.
[7]SRIVASTAVA A K,DAS K.Microstructure and abrasive wear study of(W,Ti)C reinforced high-manganese austenitic steel matrix composite[J].Materials Letters,2008,62(24):3947-3950.
[8]WANG X Q,HE X X,GUO H L.Influence of Mo on the microstructure and mechanical properties of TiC-based cermets[J].Rare Metals,2010,29(4):346-350.
[9]LI Y,LIU N,ZHANG X,et al.Effect of Mo addition on the microstructure and mechanical properties of ultra-fine grade TiC-TiN-WC-Mo2C-Co cermets[J].International Journal of Refractory Metals and Hard Materials,2008,26(3):190-196.
[10]SHIN S G,LEE J H.Effect of carbide additions on grain growth in TiC-Ni cermets[J].Metals&Materials International,2006,12(12):57-62.
[11]LIU N,XU Y,LI Z,et al.Influence of molybdenum addition on the microstructure and mechanical properties of TiC-based cermets with nano-TiN modification[J].Ceramics International,2003,29(8):919-925.
[12]LIN N,WU C H,HE Y H,et al.Effect of Mo and Co additions on the microstructure and properties of WC-TiC-Ni cemented carbides[J].International Journal of Refractory Metals and Hard Materials,2012,30(1):107-113.
[13]RONG S F,LIU C,GUO J W,et al.The influence of hadifield steel-bonded TiC preparation process on microstructure and properties[J].Advanced Materials Research,2011,291:1825-1830.
[14]ZHOU S Z,WANG S Q,WANG L S,et al.Effect of sintering atmosphere on microstructure and properties of TiC based cermets[J].Journal of Central South University of Technology,2007,14(2):206-209.
[15]CARDINAL S,MALCHRE A,GARNIER V,et al.Microstructure and mechanical properties of TiC-TiN based cermets for tools application[J].International Journal of Refractory Metals and Hard Materials,2009,27(3):521-527.
[16]LASALVIA J C,KIM D K,MEYERS M A.Effect of Mo on microstructure and mechanical properties of TiC-Ni-based cermets produced by combustion synthesis-impact forging technique[J].Materials Science and Engineering:A,1996,206(1):71-80.
[17]ZHOU S Q,ZHAO W,XIONG W H,et al.Effect of Mo and Mo2C on the microstructure and properties of the cermets based on Ti(C,N)[J].Acta Metallurgica Sinica(English Letters),2008,21(3):211-219.
[18]XIONG J,GUO Z,SHEN B,et al.The effect of WC,Mo2C,TaC content on the microstructure and properties of ultra-fine TiC0.7N0.3cermet[J].Materials&Design,2007,28(5):1689-1694.
[19]STEWART T L,PLUCKNETT K P.The effects of Mo2C additions on the microstructure and sliding wear of TiC0.3N0.7-Ni3Al cermets[J].International Journal of Refractory Metals and Hard Materials,2015,50:227-239.
[20]GUO Z,XIONG J,YANG M,et al.Effect of Mo2C on the microstructure and properties of WC-TiC-Ni cemented carbide[J].International Journal of Refractory Metals and Hard Materials,2008,26(6):601-605.
[2]王鑫,吴一,龙飞,等.TiC钢结硬质合金的研究进展[J].材料导报,2007,21(8):72-75.
[3]WANG Z A,DAI H Y,ZOU Y.Effects of nano TiN addition on the microstructure and mechanical properties of TiC based steel bonded carbides[J].Rare Metals,2008,27(1):5-8.
[4]TSINJAN A,KLAASEN H,KUBARSEPP J,et al.Influence of sintering techniques on the performance characteristics of steel-bonded TiC-based cermets[J].Estonian Journal of Engineering,2009,15(4):283-292.
[5]刘东华,汤波.TiC高锰钢钢结硬质合金微观结构研究[J].金属材料与冶金工程,2012,40(6):8-11.
[6]JING T F,ZHANG F C.The work-hardening behavior of medium manganese steel under impact abrasive wear condition[J].Materials Letters,1997,31(3/4/5/6):275-279.
[7]SRIVASTAVA A K,DAS K.Microstructure and abrasive wear study of(W,Ti)C reinforced high-manganese austenitic steel matrix composite[J].Materials Letters,2008,62(24):3947-3950.
[8]WANG X Q,HE X X,GUO H L.Influence of Mo on the microstructure and mechanical properties of TiC-based cermets[J].Rare Metals,2010,29(4):346-350.
[9]LI Y,LIU N,ZHANG X,et al.Effect of Mo addition on the microstructure and mechanical properties of ultra-fine grade TiC-TiN-WC-Mo2C-Co cermets[J].International Journal of Refractory Metals and Hard Materials,2008,26(3):190-196.
[10]SHIN S G,LEE J H.Effect of carbide additions on grain growth in TiC-Ni cermets[J].Metals&Materials International,2006,12(12):57-62.
[11]LIU N,XU Y,LI Z,et al.Influence of molybdenum addition on the microstructure and mechanical properties of TiC-based cermets with nano-TiN modification[J].Ceramics International,2003,29(8):919-925.
[12]LIN N,WU C H,HE Y H,et al.Effect of Mo and Co additions on the microstructure and properties of WC-TiC-Ni cemented carbides[J].International Journal of Refractory Metals and Hard Materials,2012,30(1):107-113.
[13]RONG S F,LIU C,GUO J W,et al.The influence of hadifield steel-bonded TiC preparation process on microstructure and properties[J].Advanced Materials Research,2011,291:1825-1830.
[14]ZHOU S Z,WANG S Q,WANG L S,et al.Effect of sintering atmosphere on microstructure and properties of TiC based cermets[J].Journal of Central South University of Technology,2007,14(2):206-209.
[15]CARDINAL S,MALCHRE A,GARNIER V,et al.Microstructure and mechanical properties of TiC-TiN based cermets for tools application[J].International Journal of Refractory Metals and Hard Materials,2009,27(3):521-527.
[16]LASALVIA J C,KIM D K,MEYERS M A.Effect of Mo on microstructure and mechanical properties of TiC-Ni-based cermets produced by combustion synthesis-impact forging technique[J].Materials Science and Engineering:A,1996,206(1):71-80.
[17]ZHOU S Q,ZHAO W,XIONG W H,et al.Effect of Mo and Mo2C on the microstructure and properties of the cermets based on Ti(C,N)[J].Acta Metallurgica Sinica(English Letters),2008,21(3):211-219.
[18]XIONG J,GUO Z,SHEN B,et al.The effect of WC,Mo2C,TaC content on the microstructure and properties of ultra-fine TiC0.7N0.3cermet[J].Materials&Design,2007,28(5):1689-1694.
[19]STEWART T L,PLUCKNETT K P.The effects of Mo2C additions on the microstructure and sliding wear of TiC0.3N0.7-Ni3Al cermets[J].International Journal of Refractory Metals and Hard Materials,2015,50:227-239.
[20]GUO Z,XIONG J,YANG M,et al.Effect of Mo2C on the microstructure and properties of WC-TiC-Ni cemented carbide[J].International Journal of Refractory Metals and Hard Materials,2008,26(6):601-605.