Low temperature fatigue properties of the joints of SMA490BW weathering resistant steel
- DOI
- 10.2991/ifeesd-16.2016.69How to use a DOI?
- Keywords
- SMA490BW weathering resistant steel; low-temperautre fatigue properties; microstructures; mechanical properties at low temperature.
- Abstract
Microstructures of SMA490BW weathering steel welded joints are investigated. Tensile tests, impact tests and bending tests of joints were carried out to investigate the mechanical properties from the test temperature of 0øC to -40øC. And the fatigue properties of jonits at -40ø C and 0øC are discussed in the article. Fracture surface of impact joints of different temperautre are observed. Well-formed welded joint has been obtained by MIG welding method. There are no cracks and other weld defects are found in the joints. In the temperature range of 0-40 øC, all the tensile specimens are broken at the base metal, and the tensile strength increases with the decreasing temperature. Impact toughness of weld decreases with the decreasing temperature. Fracture mode of base material transforms into quasi-cleavage fracture by the dimple mode at -40øC. Cleavage fracture surface is observed of the weld at the temperature of 0øC and -40øC. Cracks and other surface defects are not found in the bending test of the weld at the temperature of -40øC.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Yongshou Wu AU - Zhiyi Zhang AU - Weichuang Qi AU - Xiangyang Wu AU - Yongpan He AU - Hui Chen PY - 2016/05 DA - 2016/05 TI - Low temperature fatigue properties of the joints of SMA490BW weathering resistant steel BT - Proceedings of the 2016 International Forum on Energy, Environment and Sustainable Development PB - Atlantis Press SP - 398 EP - 403 SN - 2352-5401 UR - https://doi.org/10.2991/ifeesd-16.2016.69 DO - 10.2991/ifeesd-16.2016.69 ID - Wu2016/05 ER -