通过热模拟实验、光学金相及SEM观察,研究了变形、奥氏体变形状态以及Mn元素对于盾构机轴承用钢42CrMo的连续冷却相变组织的影响.结果表明:变形对铁素体和珠光体相变影响不大,但是可以显著得抑制低冷速下退化珠光体的产生;此外变形促进了贝氏体和马氏体相变,对组织有明显的细化作用.不同的变形状态下,相比未再结晶区变形后冷却,再结晶区变形后冷却可以促进贝氏体和马氏体相变,对组织细化作用明显.40CrMnMo相比42CrMo中Mn含量提高,将大大促进其在静态连续冷却转变中低冷速段退化珠光体的产生;同时大幅扩大贝氏体和马氏体相变区间,使淬透性明显增大.
参考文献
| [1] | 朱雪峰.盾构机国产化的探讨[J].建筑机械（上半月）,2010(02):71-73. |
| [2] | Li W,Sakai T,Li Q,et al .Reliability evaluation on very high cycle fatigue property of GCr15 bearing steel[J].International Journal of Fatigue,2010,32(7):1096-1107.,2010. |
| [3] | Zhao M C,Yang K,Xiao F R,et al .Continuous cooling transformation of undeformed and deformed low carbon pipeline steels[J].Materials Science and Engineering A,2003,355(1):126-136.,2003. |
| [4] | Bengochea R,Lopez B,Gutierrez I .Influence of the prior austenite microstructure on the transformation products obtained for C-Mn-Nb steels after continuous cooling[J].ISIJ International,1999,39(6):583-591.,1999. |
| [5] | Zhang C,Cai D,Wang Y,et al .Effects of deformation and Mo,Nb,V,Ti on continuous cooling transformation in Cu-P-Cr-Ni-Mo weathering steels[J].Materials Characterization,2008,59(11):1638-1642.,2008. |
| [6] | 林慧国,傅代直.钢的奥氏体转变曲线一原理、测试与应用[M].北京:机械工业出版社,1988.,1988. |
| [7] | 杨景红,刘清友,孙冬柏,李向阳.冷速及变形对X70级管线钢相变及组织的影响[J].材料热处理学报,2008(05):59-63. |
| [8] | Jun H J,Kang J S,Seo D H,et al .Effects of deformation and boron on microstructure and continuous cooling transformation in low carbon HSLA steels[J].Materials Science and Engineering A,2006,422(1):157-162.,2006. |
| [9] | 朱洪武,刘雅政,闫永明,徐盛,王磊英,王国存.钎具用钢22Si2MnCrNi2MoA连续冷却相变的组织变化[J].材料热处理学报,2013(01):112-116. |
| [10] | Wang X,Du L,Xie H,et al .Effect of deformation on continuous cooling phase transformation behaviors of 780 mpa nb-ti ultra-high strength steel[J].Steel Research International,2011,82(12):1417-1424.,2011. |
| [11] | 李星逸,刘文昌,郑炀曾,管秀发,刘月华.热变形条件对一种Cr-Mn-Mo-B钢连续冷却贝氏体转变的影响[J].钢铁,1998(04):0. |
| [12] | Marketz F,Fischer F D .A mesoscale study on the thermodynamic effect of stress on martensitic transformation[J].Metallurgical and Materials Transactions A,1995,26(2):267-278.,1995. |
| [13] | 张宇,刘仁东,王科强,徐荣杰,徐承明,王永明,肖宇.42CrMo钢动态CCT曲线及组织转变[J].金属热处理,2012(12):37-40. |
| [14] | Sellars C M,Whiteman J A .Recrystallization and grain growth in hot rolling[J].Metal Science,1979,13:3-4.,1979. |
| [15] | 王立军,蔡庆伍,余伟,武会宾,雷爱娣.低碳低合金钢的连续冷却相变组织特征及其形成机制[J].材料工程,2010(08):29-33. |
| [16] | 孙艳坤,吴迪.珠光体共析转变对碳化物粒状倾向的影响[J].热加工工艺,2008(24):54-56. |
| [17] | Reza T,Abbas N,Reza S .Drawing of CCCT diagrams by static deformation and consideration deformation effect on martensite and bainite transformation in NiCrMoV steel[J].Journal of Materials Processing Technology,2008,196(1):321-331.,2008. |
| [18] | Staudhammer K P,Murr L E,Hecker S S .Nucleation and evolution of strain-induced martensitic(bcc) embryos and substructure in stainless steel:a transmission electron microscope study[J].Acta Metallurgica,1983,31(2):267-274.,1983. |
| [19] | 李文卿,王连伟,傅立元,等.控轧控冷16Mn钢珠光体细化与退化的研究[J].钢铁研究,1990(4):52-60.LI Wen-qing,WANG Lian-wei,FU Li-yuan,et al.Research on the controlled rolling and controlled cooling on pearlite refinement and degeneration of 16Mn steel[J].Research on Iron and Steel,1990 (4):52-60.,1990. |
| [20] | 许兴,张来启,吴结才.Mn含量对高强度耐候钢连续冷却过程中组织和性能的影响[J].金属热处理,2007(06):7-10. |
| [21] | Manohar P A,Chandra T .Continuous cooling transformation behaviour of high strength microalloyed steels for linepipe applications[J].ISIJ International,1998,38(7):766-774.,1998. |
| [22] | 杨跃辉,武会宾,蔡庆伍,程莉.9Ni钢中回转奥氏体的形成规律及其稳定性[J].材料热处理学报,2010(03):73-77. |
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