| About this Abstract |
| Meeting |
Materials Science & Technology 2011
|
| Symposium
|
Recent Advances in Structural Characterization of Materials
|
| Presentation Title |
Near-Edge Residual Stress Evaluations by Nanoindentation |
| Author(s) |
Kevin Chou |
| On-Site Speaker (Planned) |
Kevin Chou |
| Abstract Scope |
A finite element model was developed to simulate the nanoindentation with a Berkovich indenter to investigate deposition residual stress in diamond-coated tools. The effect of plastic properties of diamond on the load-displacement behavior has been studied, and the result shows that the yield strength of diamond plays an important role in the load-displacement behavior. The stress-induced depth shift will increase to 11 nm when the substrate tensile residual stress increases to 0.7 GPa at an indentation load of 10 mN. While for diamond, it will decrease to about 7.0 nm for a compressive residual stress of 4.0 GPa at 10 mN indentation load. This demonstrates that the stress-induced depth may be an alternative method to determine the residual stress around a cutting edge of diamond-coated tools. Nanoindentation tests have been carried out on a diamond-coated carbide tool to examine the model. |
| Proceedings Inclusion? |
Definite: A CD-only volume |