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| 1 | 超声冲击对20Cr2Ni4A渗碳齿轮钢性能的影响显示文摘为了研究超声波冲击对20Cr2Ni4A渗碳齿轮钢性能的影响,采用ZJ-II型超声波冲击设备对20Cr2Ni4A渗碳齿轮钢进行了超声冲击处理,利用X射线衍射仪(X-Ray Diffractometer,XRD)、X射线应力测试仪、多功能表面性能测量仪和表面粗糙度仪分别测量了试样处理前后晶粒尺寸、残余应力、残余奥氏体含量、显微硬度和表面粗糙度,并对其性能进行了对比分析。结果表明:经超声冲击后的20Cr2Ni4A钢试样的晶粒尺寸得到细化,残余应力、表面显微硬度显著提高,表面残余奥氏体含量、粗糙度明显下降,说明超声冲击对20Cr2Ni4A渗碳齿轮钢的力学性能和显微组织有明显改善,为超声冲击技术运用于工业生产提供了实验依据。 | 殷畅 张平 赵军军 | 2016 | 装甲兵工程学院学报2016，30，4： | 4 |
| 2 | 超声冲击对20Cr2Ni4A渗碳齿轮钢接触疲劳寿命的影响显示文摘利用ZJ-II型超声波冲击设备对20Cr2Ni4A渗碳齿轮钢进行超声冲击处理,对比研究超声冲击前后试样的接触疲劳寿命、残余应力和显微硬度随层深的变化情况。结果表明:经过超声冲击强化后,渗碳齿轮钢的接触疲劳寿命有较大幅度的提高。主要原因是晶粒细化和位错增殖抑制疲劳裂纹源的萌生,残余应力显著增加、表面硬度大幅度提高降低疲劳裂纹拓展的速率,从而使其接触疲劳性能得到显著提升。 | 殷畅 张平 赵军军 | 2016 | 兵器材料科学与工程2016，39，5： | 3 |
| 3 | Influence of Surface Nanocrystallization on Ti Ion Implantation of Pure Iron显示文摘In order to increase the depth or concentration of Ti ion implantation of pure iron, the surface mechanical attrition treatment(SMAT), which can fabricate a nanometer-grained surface layer without porosity and contamination in a pure iron plate, was used before ion implantation. Ti ion was implanted into the SMA treated sample and coarse-grained counterpart by using a metal vapor vacuum arc source implanter. The changing of depth and concentration of Ti was studied in a function of implantation time.By optical microscopy, transmission electron microscopy and X-ray diffraction, the grain size of the nano structured surface was studied. Micro-hardness, friction and wear behavior of nano surface layers were studied. By energy dispersive X-ray spectroscopy and Auger electron spectroscopy, the chemical composition and concentration of Ti ion in the surface implantation layer were studied. Experimental results showed that the concentration of Ti increased dramatically compared with untreated coarsegrained samples, which is attributed to the existence of higher density of defects(supersaturated vacancies, dislocations, non-equilibrium grain boundaries etc.) and compression stress field in the SMA treated nanocrystallined surface layer. The interaction between the defects and the implanted solute atoms leads to the increment of solid solubility. But the implantation depth showed inconspicuous change. It is shown that the ion range is just relevant to the energy and mass of the ion, dose of injection,the mass and density of target material. | Xu Li Yanli An Yinghui Wei Huayun Du Lifeng Hou Chunli Guo Hongbo Qu Yide Wang | 2015 | Journal of Materials Science & Technology2015，31，3： | 2 |
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