表面技术2015，Vol.44Issue(12)：69-74,6.DOI:10.16490/j.cnki.issn.1001-3660.2015.12.011
能量输出幅度对电火花沉积Ni201修复层界面行为的影响
Effect of Power Output Amplitude on Interface Behavior of Ni201 Restoration Layer Prepared by Electro-spark Deposition on Q235 Steel
摘要
Abstract
Objective To obtain a Ni201 restoration layer with a better quality by electro-spark deposition. Methods Using e-lectro-spark deposition technology, Ni201 restoration layer was prepared on Q235 steel surface with the DHD-6000 type electro-spark deposition equipment, the microstructure, chemical elements distribution, phase composition of the bonding interface be-tween the restoration layer and the substrate, and residual stress on the surface of the restoration layer were investigated by means of scanning electron microscopy, energy dispersive spectrometer, and X-ray diffraction. Results The microstructure of Ni201 resto-ration layer was uniform and dense, and there was interdiffusion of elements between the restoration layer and the substrate, the main phases of the restoration layer bonding interface were composed of Fe10. 8Ni, γ(Fe,Ni), CoFe15. 7 and Fe, the residual stress on the surface of the restoration layer increased with the increase of power output amplitude, the residual stress was -38. 1 MPa and -81. 6 MPa under the conditions of 40% and 45% energy output, respectively, and the value of residual stress was low. Conclusion The interdiffusion of elements between the Ni201 restoration layer and the Q235 steel substrate indicated formation of metallurgical bonding between the substrate and the restoration layer, and the Ni201 restoration layer was a metallurgical bonding layer. The key factor for the quality of the restoration layer was determined by the process parameters selection of remanufacturing repair equipment, and the quality of the restoration layer prepared with an energy output amplitude of 40% was better than that pre-pared with an energy output amplitude of 45%.关键词
电火花沉积/再制造/Q235钢/修复层/界面行为/残余应力Key words
electro-spark deposition/remanufacture/Q235 steel/restoration layer/interface behavior/residual stress分类
矿业与冶金引用本文复制引用
赵运才,刘宗阳,杨雷雷..能量输出幅度对电火花沉积Ni201修复层界面行为的影响[J].表面技术,2015,44(12):69-74,6.基金项目
国家自然科学基金(50965008) （50965008）
江西省教育厅科技计划项目(GJJ14424) Supported by the National Natural Science Foundation of China(50965008) and the Science&Technology Plan Project of Jiangxi Province Education Department (GJJ14424) （GJJ14424）
