About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Ferrous Process Metallurgy
|
| Presentation Title |
Using Laser Heat Treatment to Influence Fatigue Crack Initiation Location |
| Author(s) |
Jenna Stanton |
| On-Site Speaker (Planned) |
Jenna Stanton |
| Abstract Scope |
This work investigates the effect of selective Laser Heat Treatment (LHT) on High Cycle Fatigue (HCF) crack initiation location in bending of 1045 carbon steel. LHT was applied to normalized thin sheets using a 3D laser powder bed fusion laser. Heat treated and non-heat treated samples were cut by wire EDM and fatigued at a constant amplitude strain through flexural bending in the HCF region. Tests were terminated before fracture according to a resonance-based failure criterion. Location and length of cracks were determined through microscopy for comparison of crack initiation behavior between heat treated and non-heat treated samples. |