Affiliation:
1. China North Vehicle Research Institute
2. Hebei University of Science and Technology
Abstract
In this paper, the mechanical properties of Q355NH resistant steel welded joints are studied. Through the analysis of mechanical properties of welded joints, the results showed that the tensile strength of the welded joints decreased after annealing and the elongation increased. The impact test results of tensile specimens before and after annealing showed that the impact energy of the weld area increased greatly after annealing, while the impact energy of the heat affected zone changed little. Furtherly, fatigue strength of specimens before and after annealing was compared, and the results showed that under the condition of high cycle fatigue, the un-annealed specimens were broken and the fracture position was located on the parent metal, whereas the annealed specimens did not break.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference4 articles.
1. Lin Yan, Dong Jun-hui, Liu Jun. Present status and developments of numerical simulation on welding residual stress[J]. Welding Technology, 2003, 32(6):5-7.
2. Fang Yuanbin, Zong Xuemei, Zhang Huaqing, Yin Xianqing, Zhang Linjie. Optimization on welding procedure of T-joint based on orthogonal test[J].Transactions of the China Welding Institution, 2017, 38(8): 109-112.
3. Zhang Liguo，Ji Shude，Fang Hongyuan，et al． Influence of welding sequence on welding stress of T joint (J.) Chinese Journal of Mechanical Engineering, 2007, 43( 2) : 234-237.
4. Zhang L，Lu J Z，Luo K Y，et al． Residual stress，micro-hardness and tensile properties of ANSI 304 stainless steel thick sheet by fiber laser welding (J). Materials Science& Engineering A, 2013, 561( 8) : 136-144.
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