两种高强高韧性马氏体钢的耐磨性能
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摘要
利用扫描电镜和电子背散射衍射技术对Cr Ni Mo、Mo Ti B高强高韧性马氏体钢冲击磨损试验后的耐磨性能进行研究。结果表明:在1.5 J的冲击作用下,随着冲击时间的增长Cr Ni Mo钢耐磨性比Mo Ti B钢的要差,在2.5 J冲击作用下,随着冲击时间的增加,Cr Ni Mo钢耐磨性比Mo Ti B钢的要好,其原因是小角度晶界密度的提高有助于提高钢的耐磨性能。在3.5 J冲击作用下,Cr Ni Mo钢耐磨性随冲击时间延长呈现先降低后增加的趋势,但一直高于Mo Ti B钢的耐磨性;其中,Cr Ni Mo钢中马氏体组织逐步分解成为铁素体基体以及大量的尺寸约500 nm的硬质碳化物,这些碳化物在基体组织中起到支撑作用,减少基体与磨料之间的接触,从而提高了材料的耐磨性能。
Wear resistance of Cr Ni Mo steel and Mo Ti B steel with high strength and high toughness under abrasive impact wear was studied by using scanning electron microscopy( SEM) and electron back scattering diffraction technology( EBSD). The results show that under the action of 1. 5 J impact energy,the wear resistance of Cr Ni Mo steel is becoming poorer than that of Mo Ti B steel as the impact time goes on.Under 2. 5 J impact energy,the wear resistance of Cr Ni Mo steel is becoming better than that of Mo Ti B steel as the impact time goes on,the reason is that the increase of the density of small angle grain boundaries improves the wear resistance of the steel. Under 3. 5 J impact energy,the wear resistance of Cr Ni Mo steel tends to decrease first then increases the impact time goes on,but is always higher than that of Mo Ti B steel. It is due to that the low temperature tempering martensite structure in Cr Ni Mo steel gradually decomposes into ferrite matrix and plenty of hard carbide of about 500 nm in size,such carbides strengthens the matrix phase and reduces the contact between the matrix phase and the abrasive,so as to improve the wear resistance of the steel.
Wear resistance of Cr Ni Mo steel and Mo Ti B steel with high strength and high toughness under abrasive impact wear was studied by using scanning electron microscopy( SEM) and electron back scattering diffraction technology( EBSD). The results show that under the action of 1. 5 J impact energy,the wear resistance of Cr Ni Mo steel is becoming poorer than that of Mo Ti B steel as the impact time goes on.Under 2. 5 J impact energy,the wear resistance of Cr Ni Mo steel is becoming better than that of Mo Ti B steel as the impact time goes on,the reason is that the increase of the density of small angle grain boundaries improves the wear resistance of the steel. Under 3. 5 J impact energy,the wear resistance of Cr Ni Mo steel tends to decrease first then increases the impact time goes on,but is always higher than that of Mo Ti B steel. It is due to that the low temperature tempering martensite structure in Cr Ni Mo steel gradually decomposes into ferrite matrix and plenty of hard carbide of about 500 nm in size,such carbides strengthens the matrix phase and reduces the contact between the matrix phase and the abrasive,so as to improve the wear resistance of the steel.
引文
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[2]张燕平.ZGMn13高锰钢耐磨性与磨削加工硬化机理的研究[D].福州:福州大学,2013.Zhang Yanping.Research on wear resistance and grinding work hardening mechanism of ZGMti13 steel[D].Fuzhou:Fuzhou University,2013.
[3]何力,卢锦德,熊玉竹,等.合金化对高锰钢奥氏体基体强度及耐磨性的影响[J].贵州工业大学学报(自然科学版),2000,29(2):45-48.He Li,Lu Jinde,Xiong Yuzhu,et al.The effect of alloying on austenite strength and abrasion resistance of high manganese steel[J].Journal of Guizhou University of Technology(Natural Science Edition),2000,29(2):45-48.
[4]李绍雄,施忠良,尹衍升,等.高锰钢微合金化表层组织的转变及其对耐磨性的影响[J].摩擦学学报,1993,13(3):201-207.Li Shaoxiong,Shi Zhongliang,Yin Yansheng,et al.Microstructure transformation on deformation of high manganese steel and its influence on abrasive resistance[J].Tribology,1993,13(3):201-207.
[5]练容彪,宋新莉,马玉喜,等.合金元素对低合金耐磨钢组织及性能的影响[J].金属热处理,2016,41(12):47-51.Lian Rongbiao,Song Xinli,Ma Yuxi,et al.Influence of alloy elements on microstructure and mechanical properties of low alloy wear-resistant steel[J].Heat Treatment of Metals,2016,41(12):46-50.
[6]孙荣民,徐文欢,王存宇,等.新型中锰马氏体高强度钢的耐磨性能[J].钢铁,2012,47(12):64-70.Sun Rongmin,Xu Wenhuan,Wang Cunyu,et al.Wear resistant of new type medium manganese high strength martensite steel[J].Steel,2012,47(12):64-70.
[7]Peng Shiguang,Song Renbo,Ting Sun,et al.Surface failure behavior of 70Mn martensite steel under abrasive impact wear[J].Wear,2016,362-363:129-134.
[8]Wang Cunyu,Li Xiaodong,Chang Ying,et al.Comparison of threebody impact abrasive wear behaviors for quenching-partitioningtempering and quenching-tempering 20Si2Ni3 steels[J].Wear,2016,362-363:121-128.
[9]Yang Yeyuan,Fang Hongsheng,Zheng Yankang,et al.The failure mode induced by white layers during impact wear[J].Wear,1995,185:17-22.
[10]崔冰,彭云,赵琳,等.焊接热循环对1000 MPa级焊缝金属组织性能的影响[J].材料科学与工艺,2016,24(1):44-50.Cui Bing,Peng Yun,Zhao Lin,et al.Effects of weld thermal cycle on microstructure and properties of 1000 MPa grade weld metal[J].Materials Science and Technology,2016,24(1):44-50.
[11]崔冰,彭云,彭梦都,等.焊接热输入对Q890钢焊缝金属组织及韧性的影响[J].金属热处理,2016,41(4):46-50.Cui Bing,Peng Yun,Peng Mengdu,et al.Effect of heat input on microstructure and toughness of weld metal for Q890 steel[J].Heat Treatment of Metals,2016,41(4):46-50.
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