Analysis on the Residual Stresses in Functionally Gradient Fe360/Glass-Ceramic Coatings

Abstract:

A novel functionally gradient composite was reported in this article. The composite material are composed of plain low carbon steel Fe360 as a substrate and glass-ceramics containing ZrO₂ reinforcing particles as a coating. Based on a mathematical model of the residual stress, the geometric model and finite element analysis models of the Fe360/glass-ceramic gradient coatings were established. The residual stress of the gradient layers was calculated with the commercial software ANSYS 10.0. The results showed that the differences of thermal expansion coefficient and shrinkage rate in each layer resulting from the difference of the volume fraction of ZrO₂ in each gradient layer could make the surface layer generate suitable compressive stress. The maximum residual stress presents itself at the interface between the substrate and the gradient coatings. The layer numbers and the thickness of graded coatings have a significant effect on the residual stress.

• Periodical: Advanced Materials Research (Volume 717)
• Pages: 215-220
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.717.215
• Online since: July 2013
• Authors: Li Ming Zhou, Wei Gong, En Ze Wang
• Keywords: Functionally Gradient Coatings, Glass-Ceramic, Numerical Simulation, Residual Stress Analysis

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