Thermal Stress Analysis of Functionally Graded Cemented Carbides
(0) A new numerical model for cemented carbides with cobalt gradient has been developed. In this study, carburization is used to form cobalt gradient structure with optimized surface characteristics. Finite-element formulations incorporating continuous and smooth spatial variation in the composition and properties of the cemented carbides are used to simulate the evolution of elastoplastic response of functionally graded cemented carbides (FGCC) due to thermal loading. The geometry of specimens is axisymmetric solid cylinder with two-dimension gradient. The constitutive elastoplastic response is developed by constraint factors. The plasticity constraint factor is used to determine the stress-strain relation of plastic deformation. Different shapes of cobalt rich zone are considered to analyze the evolution of thermal stresses. The calculated results show arc transition of gradient in the corner has a good agreement with XRD measurement.
Ziqian Huang Haitao Cai Baiyun Huang
State Key Laboratory of Powder Metallurgy, Central South University Changsha 410083, China School of Mathmatical Sciences and Computing Technology, Central South University Changsha 410083, C
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
443-452
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）