| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IV
|
| Presentation Title |
Damage Evolution of HVOF Coatings under Shear Lag Test |
| Author(s) |
Deepesh Yadav, Sanjay Sampath, Jaya Nagamani Balila |
| On-Site Speaker (Planned) |
Deepesh Yadav |
| Abstract Scope |
This study investigated damage evolution i.e. surface cracking and delamination of metallic Ni-based coatings deposited by high-velocity oxy-fuel (HVOF), under shear lag test by using experimental and numerical methods. Experimental results revealed that Ni and Ni-5Al coatings get delaminated when 0.05 and 0.027 strain is reached in substrate respectively and no surface cracking occurs in coatings throughout the test while in NiCrAlY coating surface crack forms at 0.016 strain and delamination of coating starts at 0.035 strain in substrate. Full-scale strain distribution in coatings has been determined by digital image correlation, and stress in coatings and substrate has been determined by using FEM.
The cohesive strength of Ni and Ni-5Al coatings are better than NiCrAlY coating while adhesive strength of NiCrAlY coating is better than Ni and Ni-5Al coatings. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Mechanical Properties, Other |