Analysis of Interface Delamination of Cold Sprayed Coatings Due to Thermal Cycling
Abstract
This study investigates the effect of thermal cycling on cold-spray chromium coatings deposited on steel substrates. First, equilibrium stress states are determined for different coating thicknesses. Next, the potential for crack initiation and growth is simulated based on periodic heating and cooling cycles. The corresponding crack driving forces are characterized using interface stresses and energy release rate as a function of the thermal cycles. The effects of coating thickness, embedded microcracks, and initial residual stress on the driving forces are investigated systematically to demonstrate the risk of coating fracture and delamination.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 26, 2019
- Source ID
- 10.31399/asm.cp.itsc2019p0838
Entities
People
- Aaron Nardi
- Enqiang Lin
- Isaac Nault
- Sinan Muftu
- Victor K. Champagne Jr.
Organizations
- Northeastern University
- United States Army Research Laboratory