文章摘要
任继华.能量输出幅度对冷焊修复层组织性能的影响[J].润滑与密封,2018,43(7):116-120
能量输出幅度对冷焊修复层组织性能的影响
Effect of Energy Output Amplitude on Microstructure and Properties of Cold Welding Repairing Layer
  
DOI:10.3969/j.issn.0254-0150.2018.07.021
中文关键词: 冷焊修复  能量输出幅度  组织性能
英文关键词: cold welding repair  energy output amplitude  structure property
基金项目:国家自然科学基金项目(51565017);高端轴承摩擦学技术与应用国家地方联合工程实验室开放基金项目(201713);江西省自然科学基金项目(2012BAB206026);江西省教育厅项目(GJJ14424).
作者单位E-mail
任继华 深圳合发齿轮机械有限公司 892795126@qq.com 
摘要点击次数: 309
全文下载次数: 0
中文摘要:
      采用脉冲冷焊修复技术,对45#钢基体进行再制造修复,制备Q345改性层,并研究能量输出幅度对修复层质量的影响。使用金相显微镜、扫描电镜(SEM)、能谱仪(EDS)、X射线衍射以及显微硬度计,研究基体与修复层结合区域的相组织、微观结构、元素扩散以及硬度分布情况。结果显示:修复后结合界面热影响区(HAZ)很小,基体与修复层结合面处出现明显的熔合区域,结合界面发生了元素扩散行为,并且存在γ(Ni,Cr,Fe)、Co3Fe7和C0.055Fe1.945等新相,基体与修复层为冶金结合;修复层硬度较基体要低,便于于后续机械加工;能量输出幅度为90%时,熔合区靠基体一侧出现孔洞以及微小裂纹缺陷,能量幅度为40%的修复层质量较90%的要好。
英文摘要:
      Using pulse cold welding repair technology,the Q345 modified layer was prepared by remanufacturing the 45 steel substrate.The effect of energy output amplitude on the quality of repairing layer was studied.Metallographic microscope,scanning electron microscopy (SEM),energy dispersive spectrometer (EDS),X ray diffraction and microhardness were used to study the phase structure,microstructure,element diffusion and hardness distribution of the binding region between the substrate and the repairing layer.The results show the heat affected zone of the interface is very smaller after repairing.There is an obvious fusion area at the interface between the matrix and the repairing layer,and the element diffusionbehavior occurs at the interface.There are new phases such as γ(Ni,Cr,Fe),Co3Fe7and C0.055Fe1.945to be formed at the interface,showing it is metallurgical bonding between the matrix and the repair layer.The hardness of the repairing layer is lower than that of the matrix,which is convenient for subsequent machining.The quality of repairing layer with energy output amplitude of 40% is better than that with energy output amplitude of 90%,because the fusion zone on the substrate side occurs holes and tiny cracks when the energy output amplitude is 90%.
查看全文   查看/发表评论  下载PDF阅读器
关闭

分享按钮