Effect of cutting process on the residual stress and fatigue life of the welded joint treated by ultrasonic impact treatment

Liang, Hang; Kan, Yanmei; Chen, Huaining; Zhan, Rui; Liu, Xiuguo; Wang, Dongpo

doi:10.1016/j.ijfatigue.2020.105998

Cited by 34 publications

(20 citation statements)

References 19 publications

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“…For welded structures, component or specimen a cutting process will introduce relaxation of residual stresses. A few studies emphasized the re-distribution of the welding residual stresses caused by the cutting process [13][14][15]. An analysis of data presented in Liang et al [15] was performed.…”

Section: Weld Residual Stress Relaxation After Cutting Processesmentioning

confidence: 99%

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Residual Stresses Distribution Posterior to Welding and Cutting Processes

Manai¹

2022

Engineering Principles - Welding and Residual Stresses

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Welding is a joining process that leads to considerable change in the local material and the formation of welding residual stresses (RS). Welding residual stresses can be compressive (beneficial for the fatigue life) or tensile (harmful for the fatigue life). In this chapter, a probabilistic analysis of residual stresses distribution posterior to welding processes is carried out. Several researchers stated that the type of the introduced stresses either compressive or tensile depends on several factors. Some of these factors are listed in this chapter. Welding of mega-structures is carried out in the workshops, then a cutting process takes place to construct the exact size of the structural components. This cutting process has a significant effect on the weld residual stresses re-distribution. A study of the re-distribution of the weld residual stress after cutting was performed. It was found that independent of the weld seam length, the residual stresses re-distributed up to 60 % of the weld seam length.

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Section: Weld Residual Stress Relaxation After Cutting Processesmentioning

confidence: 99%

“…A few studies emphasized the re-distribution of the welding residual stresses caused by the cutting process [13][14][15]. An analysis of data presented in Liang et al [15] was performed. The used material is Q355B with yield strength σ fy ¼ 359 MPa.…”

Section: Weld Residual Stress Relaxation After Cutting Processesmentioning

confidence: 99%

Residual Stresses Distribution Posterior to Welding and Cutting Processes

Manai¹

2022

Engineering Principles - Welding and Residual Stresses

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“…The possible reason is that the wire cutting causes the longitudinal residual stress of the specimen to relax while the transverse residual stress does not change much. 28,29 In addition, there is a dislocation of the specimen at the position of the iii side, which tends to cause a stress concentration in the case of superimposed external loads. The residual stress values on the iii side of the weld from large to small are CJP-4 iii , CJP-0 iii , CJP-1 iii , and CJP-2 iii .…”

Section: Residual Stress Distributionmentioning

confidence: 99%

Effects of cavitation jet peening treatment on the residual stress and fatigue properties of SAF2205 cruciform welded joints

Zheng

Luo

Jiang

et al. 2022

Fatigue Fract Eng Mat Struct

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The cruciform welded joint is a weak position of filter press to cause fatigue failure under cyclic conditions. In this study, cavitation jet peening (CJP) treatment is proposed to improve the fatigue life of SAF2205 cruciform welded joints. The effects of different CJP treatment positions on the residual stress, microstructure, and microhardness were studied. The results show that different CJP treatment positions have different on residual stresses and fatigue life. The order of the residual stress in fracture position from large to small is the fully treated specimen, untreated specimen, one-sided treated specimen, and diagonal treated specimen, which is exactly opposite to the order of fatigue life from large to small. After the diagonal CJP treatment, the fatigue life is increased by up to 242.19%, and the residual stress at the weld toe is reduced by more than 80%. A strengthening layer with thicknesses of about 400 μm is formed.

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“…The corner section of HSLA square tubes usually has three typical characteristics: severe strain hardening [11], thickness reduction [12], and large outer corner radius [13]. Severe strain hardening means the increase of residual stress and the reduction of the product of strength and elongation, which will lead to the reduction of the fatigue life of welded joints [14,15]. Adopting a larger bending radius can effectively alleviate strain hardening and thickness reduction, but it will increase the outer corner radius, limit the scope of application, and increase the difficulty of subsequent assembly and welding processes.…”

Section: Introductionmentioning

confidence: 99%

Effect of induction heating temperature on the microstructure and mechanical properties of HSLA square tubes

Wang¹,

Mehari²,

Wu³

et al. 2022

Mater. Res. Express

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Severe strain hardening, thickness reduction, and large outer corner radius are three typical characteristics in the corner section of cold roll-formed steel. This paper presents a new manufacturing technology called cold and hot composite roll forming to improve the shape and properties in the corner section. In order to study the effect of induction heating temperature, a multi-pass cold and hot composite roll forming experiment for high-strength low-alloy steel (HSLA) square tubes was carried out under three different heating temperature ranges namely: the non-austenitizing zone, partial austenitizing zone, and austenitizing homogenizing zone. The microstructure and mechanical properties in the corner section of square tubes were studied using the material testing machine, optical microscope (OM), scanning electron microscope (SEM), and transmission electron microscope (TEM). Results showed that with the increase of induction heating temperature, the geometrical morphology and mechanical properties in the corner section of the cold and hot composite roll-formed square tube were significantly improved. Thus, compared with cold roll-formed square tubes, the corner thickness of cold and hot composite roll-formed square tubes was increased by 59%, the product of strength and elongation was increased by 48%, the outer corner radius was decreased by 91%, and no cracks appeared during the flattening test. Moreover, the proportion of granular bainite in the outer corner section increased, and the grain distortion in the inner corner section was relieved. The experimental results further showed that the austenitizing homogenizing zone was preferable among the three heating temperature ranges to manufacture high-quality HSLA square tubes.

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Effect of cutting process on the residual stress and fatigue life of the welded joint treated by ultrasonic impact treatment

Cited by 34 publications

References 19 publications

Residual Stresses Distribution Posterior to Welding and Cutting Processes

Residual Stresses Distribution Posterior to Welding and Cutting Processes

Effects of cavitation jet peening treatment on the residual stress and fatigue properties of SAF2205 cruciform welded joints

Effect of induction heating temperature on the microstructure and mechanical properties of HSLA square tubes

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