Paper Title:
Microstructure and Mechanical Properties of Weld in 980MPa Grade Steel by Ultra-Narrow Gap Welding
  Abstract

980MPa grade high strength low alloy steel was welded by ultra-narrow gap welding. Observed by optical metalloscope, there were large majority of equiaxial crystals in weld centers, which was the weld cross-section of 18.3%. Each weld could be compartmentalized into original microstructure zone, over heated zone and normalizing zone under next weld thermal cycle, in which the microstructures were almost the same. Through quantificational metallographic analysis, it was found there was more than 98.9% of acicular ferrite in weld metal, and other microstructures were fine. Mechanical test indicated that the strength of weld metal was higher than body material, and had outstanding plasticity. What is more, the toughness of weld metal was better than solder wire.

  Info
Periodical
Chapter
Chapter 2: Material Science and Engineering
Edited by
Helen Zhang and David Jin
Pages
263-266
DOI
10.4028/www.scientific.net/AMR.322.263
Citation
L. Zhao, F. J. Zhang, S. H. Feng, "Microstructure and Mechanical Properties of Weld in 980MPa Grade Steel by Ultra-Narrow Gap Welding", Advanced Materials Research, Vol. 322, pp. 263-266, 2011
Online since
August 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hee Joon Sung, Yeon Baeg Goo, Kyeong Ju Kim, Kee Young Choi
Abstract:Chemical composition effect on the weld properties for low temperature steel was evaluated. The alloy elements of interest at the weld metal...
57
Authors: Yong Jie Ma, Guang Liang Zhang
Abstract:The structure and mechanical properties of pipeline steel X80 through HTP rolled into 16mm thick slab were tested. The results show that the...
4216
Authors: Shu Rui Li, Xue Min Wang, Chao Chao Zheng, Xin Lai He
Chapter 2: Iron and Steel
Abstract:The influence of the oxide inclusions on the microstucture, properties and the Heat-affected-zone (HAZ) toughness of low alloy steels has...
252
Authors: Zheng Hai Xia, Xiang Liang Wan, Xue Li Tao, Kai Ming Wu
Chapter 12: Thermal Engineering Theory and Applications
Abstract:The effect of heat input on toughness of coarse-grained heat-affected zone of an ultra low carbon acicular ferrite steel were investigated...
2003
Authors: Qiu Ying Wang, Zhi Bo Hu, Ming Yue Zhang, Yi Lin Zhou, Jin Bo Liu, Hui Chen
Chapter 15: Welding & Joining
Abstract:This paper introduced a kind of bainite steel used for frog, and studied its repair welding processes. In this paper, four different welding...
2274