标题：Mechanical response of the Cr3C2-NiCr coating-substrate system during nanoindentation process
作者：Zhang, Yongang; Zou, Yong; Huang, Saifang; Gao, Wei
作者机构：[Zhang, Yongang; Zou, Yong] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Shandong, Peoples R China.; [Hu 更多
会议名称：3rd International Conference on Materials Science and Nanotechnology (ICMSNT)
会议日期：MAR 29-APR 01, 2018
来源：INTERNATIONAL JOURNAL OF MODERN PHYSICS B
关键词：Nanoindentation; Cr3C2-NiCr coating deformation; stress evolution;; modeling
摘要：The coating deformation behavior and stress evolution of the plasma sprayed Cr3C2-NiCr coating during nanoindentation process were analyzed by finite element modeling based on its real elastic-plastic properties. The effects of indentation depth and the coating thickness on the mechanical response of the coating were studied. The results show that once the indentation depth exceeded 13% of the coating thickness, the coating material near the indenter was extruded and piled up on the top surface. Meanwhile, high equivalent stress was developed along the coating-substrate interface rather than inside the coating. Even when the indentation depth was smaller than 13% of the coating thickness, the substrate still influences the mechanical behavior of the coating, inducing different reaction force to the indenter.