应用激光, 2015, 35 (6): 643, 网络出版: 2016-01-19
基于累积能量耗散法的涂层磨损行为的研究
The Study of Wear Behavior of the Coating Based on the Accumulated Dissipated Energy
摘要
采用激光熔覆技术以纯Ni粉和B4C混合粉末为熔覆材料,在钛合金表面制备了复合涂层。通过X射线衍射仪(XRD)、扫描电镜(SEM)和能谱仪(EDS)观察分析发现,涂层主要由浅灰色连续网状组织(Ti2Ni)、灰色包状晶(α(Ti))、深灰色的树枝晶(TiC)和粗针状组织(TiB)组成。另外,利用累积耗散能法建立了在不同载荷下涂层的累积磨损体积与累积耗散能之间的线性关系曲线。随着载荷的不断增加,拟合曲线的斜率不断增大,即涂层的累积磨损体积不断增大,并从能量的角度分析了该磨损现象产生的原因。
Abstract
The composite coating was prepared on the Ti6Al4V substrate by laser cladding and the mixed powder of pure nickel powder and B4C powder was selected for the cladding material. The microstructure of the coating was mainly comprised of the light gray continuous reticulation (Ti2Ni), gay cellular crystals(α(Ti)), dark gray dendrites(TiC)and flower-like structures (TiB), which were analyzed by XRD, SEM and EDS. Moreover, the linear curves of the accumulated wear volume and the accumulated dissipated energy under the different normal forces were established by the accumulated dissipated energy approach. With increase in the normal forces, the slopes of the fitted curves increased, namely, the accumulated wear volumes of the coatings increased, and the reason of that was analyzed by the view of the energy.
顾家威, 李强强, 冯盛, 高如森, 李佳曦, 邵锦钟, 宋睿, 李军. 基于累积能量耗散法的涂层磨损行为的研究[J]. 应用激光, 2015, 35(6): 643. Gu Jiawei, Li Qiangqiang, Feng Sheng, Gao Rusen, Li Jiaxi, Shao Jinzhong, Song Rui, Li Jun. The Study of Wear Behavior of the Coating Based on the Accumulated Dissipated Energy[J]. APPLIED LASER, 2015, 35(6): 643.