Research on Cracking Sensitivity of Weathering Steel SMA490BW
Xiangyang Wu, Zhiyi Zhang, Wen Li, Yongjing Wang, Yue Liu
Available Online March 2014.
- https://doi.org/10.2991/mce-14.2014.86How to use a DOI?
- SMA490BW;Three-point bending test; Fracture morphology; Fracture toughness Kc; cracking sensitivity
- SMA490BW is used specifically for the manufacture of welded frame of high-speed EMU bogies. Bogie is one of a very important bearer units and transmission units during driving while bogie frame is one of the most important bearer units and transmission units in bogie, directly related to safety during driving. So it’s necessary to study on the cracking sensitivity of the materials. Fracture toughness is the basic data in researching the cracking sensitivity of materials in fracture mechanics. This article employs three-point bending test method to test the fracture toughness Kc of weathering steel SMA490BW in plane stress state. Observe the microstructure of SMA490BW by Metallurgical microscope and scan the fracture morphology of the three-point bending specimens by SEM. The results show that for 12mm thick metal, the fracture toughness Kc of SMA490BW is KC=2504.66MPa·mm1/2.The microstructure is small ferrite and strip pearlite. In addition, the fracture of the three-point bending specimen is flat, and the brittle fracture zone is of uniform micro granular. It is a pure plane strain brittle fracture.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Xiangyang Wu AU - Zhiyi Zhang AU - Wen Li AU - Yongjing Wang AU - Yue Liu PY - 2014/03 DA - 2014/03 TI - Research on Cracking Sensitivity of Weathering Steel SMA490BW BT - 2014 International Conference on Mechatronics, Control and Electronic Engineering (MCE-14) PB - Atlantis Press SP - 388 EP - 391 SN - 1951-6851 UR - https://doi.org/10.2991/mce-14.2014.86 DO - https://doi.org/10.2991/mce-14.2014.86 ID - Wu2014/03 ER -