| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Semi In-situ Observation of Micro-crack Formation in Dual-phase Steels |
| Author(s) |
Hung-Wei Yen, Ming-Yu Tseng, Yi-Fan Hu, Kuo-Cheng Yang, Kangying Zhu |
| On-Site Speaker (Planned) |
Ming-Yu Tseng |
| Abstract Scope |
This work presents a prototype of semi in-situ tensile apparatus (SISTA), which enables semi in-situ observation on materials deformation under scanning electron microscope. SISTA is applied to study micro-crack formation in DP780 and DP980 dual-phase steels in tension by using electron backscattering diffraction and electron channeling contrast image. The results show that DP980 steel tends to form micro-cracks from ferrite grain surrounded by martensite. In contrast, DP780 steel tends to form micro-cracks at the vicinity of martensite/ferrite interface. The related mechanisms of micro-cracking are discussed in the view of deformation behaviors in two DP steels. This study provides insights into materials failure in forming and materials design of DP steel. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Characterization |