|
|
|
| Effects of Hot Bending Parameters on Microstructure and Mechanical Properties of Weld Metal for X80 Hot Bends |
| Xu WANG1,2,Bo LIAO1,Da-yong WU1,Xiu-lin HAN2,Yuan-sheng ZHANG3,Fu-ren XIAO1 |
1. Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China
2. CNPC Bohai Petroleum Equipment Manufacture Co. , Ltd. , Qingxian 062658, Hebei, China
3. China Petroleum Technology and Development Corporation, Beijing 100028, China |
|
|
|
|
Abstract Mechanical properties of weld metal are the key factors affecting the quality of heavy-wall X80 hot induction bends. The effects of bending parameters on the mechanical properties of weld metal for hot bends were investigated by simulation conducted on a Gleeble-3500 thermal simulator. Continuous cooling transformation (CCT) diagrams of the weld metal were also constructed. The influences of hot bending parameters (such as reheating temperature, cooling rate, and tempering temperature) on the microstructure and mechanical properties of weld metal were also analyzed. Results show that the strength of all weld metal specimens is higher than the value indicated in the technical specification and increases with the increase of reheating temperature, cooling rate, and tempering temperature. The impact toughness is apparently related to the variation of reheating temperature, cooling rate, and tempering temperature.
|
|
Received: 27 December 2013
Published: 04 December 2014
|
| Fund:the Natural Science Foundation of China |
|
Corresponding Authors:
Fu-Ren Xiao
E-mail: frxiao@ysu.edu.cn
|
|
|
|
| [1] |
Ying Ci,*,Zhan-zhan Zhang. Simulation study on heat-affected zone of high-strain X80 pipeline steel[J]. Chinese Journal of Iron and Steel, 2017, 24(9): 966-973. |
| [2] |
Xiao-li Zhao,,Yong-jian Zhang,Cheng-wei Shao,Wei-jun Hui,Han Dong. Thermal stability of retained austenite and mechanical properties of medium-Mn steel during tempering treatment[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 830-837. |
| [3] |
Min-qiang Gao,Ying-dong Qu,Guang-long Li,Jun-hua You,Rong-de Li. Cementites decomposition of a pearlitic ductile cast iron during graphitization annealing heat treatment[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 838-843. |
| [4] |
Hang-wei Zhou,,Hui-qun Liu,,Dan-qing Yi,,Yu Xiao,,Xiao-long Zhao,Jian Wang,Qi Gao. Effect of �� phase on fatigue crack growth of Ti-6242 alloy[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 811-822. |
| [5] |
Reng-chong Xu,,Yan-lin He,,Hu Jiang,,Hua Wang,,Na-qiong Zhu,,Xiao-gang Lu,, Lin Li,. Microstructures and mechanical properties of ferrite-based lightweight steel with different compositions[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 737-742. |
| [6] |
Zhu-jun Jiang,Yu-ye Wu,,Jing-min Wang,Cheng-bao Jiang. Influence of cooling rate on magneto-structural transition and magnetocaloric effect of Ni30Cu8Co12Mn37Ga13 alloy[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 711-717. |
|
|
|
|
2014, Vol. 21 
