|
|
Effects of Welding Heat Input on Properties of Joints of X100 Pipeline Steel |
ZHANG Min, YANG Liang, LI Jihong |
College of Material Science and Engineering, Xi’an University of Technology, Xi’an 710048 |
|
Cite this article:
ZHANG Min YANG Liang LI Jihong. Effects of Welding Heat Input on Properties of Joints of X100 Pipeline Steel. Chinese Journal of Materials Research, 2012, 26(6): 567-571.
|
Abstract The effect of welding heat input on the microstructure and properties of X100 pipeline steel was studied. The results show that with the increase of heat input, the strength and toughness of X100 pipeline steel decrease due to the decrease of acicular ferrite in the weld zone and the coarser grains in HAZ. The smaller heat input can reduce the width, and increase the hardness in HAZ. The impact energy and the shear area of joints decrease with increasing heat input. The impact fracture is quasi-cleavage fracture. The microstructure of weld zone is mainly made up of acicular ferrite and granular bainitic which could bring excellent strength and toughness. The microstructure of HAZ has larger changes because of difference of the cooling rate under different welding heat input.
|
Received: 28 September 2012
|
|
Fund: Supported by National Nature Science Foundation of China No. 51274162, the Natural Science Foundation of Shaanxi Province No. 2012JM6003 and the Science and Technology Program of Xi'an No.CX1250②. |
1 I.A.Yakubtsov, P.Poruks, J.D.Boyd, Microstructure and mechanical properties of bainitic low carbon high strength plate steels, Materials Science and Engineering A, 480(1-2), 109(2008)2 H.G.Hillenbrand, Development of high strength material and pipe production technology for grade X120 line pipe. Proceedings of IPC 2004 International Pipeline Conference, Calgary, Canada, 1(2004)3 M.C.Zhao, K.Yang, Y.Y.Shan, Comparison on strength and toughness behaviors of microalloyed pipeline steelswith acicular ferrite and ultrafine ferrite, Materials Letters, 57(9-10), 1496(2003)4 B.Hwang, C.G.Lee, Influence of thermomechanical processing and heat treatments on tensile and Charpy impact properties of B and Cu bearing high-strength low-alloy steels, Materials Science and Engineering A, 527(16-17), 4341(2010)5 FENG Yaorong, CHAI Huifen, GUO Shengwu, HUO Chunyong, LIU Yinglai, LI Helin, JIN Zhihao, Progress in research on microstructure of low-carbon and ultralowcarbon microalloyed pipeline steels, Materials Review, 16(6), 9(2002)(冯耀荣, 柴惠芬, 郭生武, 霍春勇, 刘迎来, 李鹤林, 金志浩, 低碳超低碳微合金化管线钢显微组织的研究进展, 材料导报, 16(6), 9(2002))6 B.Tanguya, T.T.Luu, G.Perrin, A.Pineau, J.Besson, Plastic and damage behavior of a high strength X100 pipeline steel: experiments and modeling, International Journal of Pressure Vessels and Piping, 85(5), 322(2008)7 ZHANG Tingting, CHEN Xiaowei, WEN Kang, WANG Xu, QIAO Guiying, LIAO Bo, Influence of thermal cycle on the microstructure and properties of X120 pipeline steel, Heat Treatment of Metals, 33(6), 95(2008)(张婷婷, 陈小伟, 文 康, 王 旭, 乔桂英, 廖 波, 焊接热循环对X120管线钢组织和性能的影响, 金属热处理, 33(6), 95(2008))8 ZHANG Wenyue, Welding Metallurgy (Beijing, Mechanical Industry Press, 1999) p.116(张文钺, 焊接冶金学 (北京, 机械工业出版社, 1999) p.116)9 C.Shiga, Progress in welding and joining in STX-21 project, Proceedings of the International Workshop on the Innovative Structural Materials for Infrastructure in 21st Century, sukuba, Japan, 159(2000) |
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|