| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Understanding and Predicting Dynamic Behavior of Materials
|
| Presentation Title |
Effect of Heat Treatment on Adiabatic Shear Band Microstructures and Internal Strains using HR-EBSD in Segmented Ti-6Al-4V Chips from Turning |
| Author(s) |
Jiawei Lu, Thomas R. Bieler, Patrick Kwon |
| On-Site Speaker (Planned) |
Jiawei Lu |
| Abstract Scope |
The relationship between the hardness of primary alpha grains in Ti-6Al-4V (wt.%) segmented chips obtained from a rolled rod turned at cutting speeds of 61 and 122 m/min, was investigated. More twinning and a lower hardness of chips was observed at 122 m/s, suggesting that less deformation occurred in regions between adiabatic shear bands at this higher cutting speed, such that strain was more concentrated in the adiabatic shear bands. To examine the nature of deformation in the adiabatic shear bands, heat treatments at different temperatures were done to examine how recovery and recrystallization provide indications of the strain state in the adiabatic shear bands. High resolution EBSD measurements in as-recovered chips from 61 and 122 m/min cutting speeds as well as on heat treated chips are used to gain insight into the internal strain states in segmented chip deformation mechanisms operating in cutting conditions. |
| Proceedings Inclusion? |
Undecided |