New methodology of dynamical material response of dissimilar FSWed Al alloy joint under high strain rate laser shock loading

Ayad, Mohammad; Lapostolle, L.; Rondepierre, Alexander; Bras, Corentin Le; Ünaldi, Selen; Donik, Črtomir; Klobčar, Damjan; Berthe, Laurent; Trdan, Uroš

doi:10.1016/j.matdes.2022.111080

Cited by 9 publications

(3 citation statements)

References 53 publications

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“…The residual stress values in each region of the joint after laser shock peening are −204.8 MPa, −187.6 MPa and −102.1 MPa, which are 2.24 times, 2.39 times and 2.04 times higher when compared to the untreated joint. As shown in Figure 5 b for laser shock peening on the HC420LA low-alloy high-strength steel laser-welded joints in the depth direction of the change, the residual compressive stress generated by the laser shock peening on the surface of the welded joint reaches a maximum value, and the induced residual compressive stress gradually decreases along the depth direction and eventually tends towards residual tensile stress; this is consistent with the findings of the literature [ 20 , 21 ]. The depth of the laser-induced residual stress field in laser-welded joints of HC420LA low-alloy high-strength steel by LSP reaches about 600 μm.…”

Section: Resultssupporting

confidence: 90%

Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel

et al. 2023

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Laser shock peening is a promising surface strengthening technology that can effectively improve the mechanical properties of materials. This paper is based on the laser shock peening process for HC420LA low-alloy high-strength steel weldments. Contrast analysis of the evolution of the microstructure, residual stress distribution and mechanical properties of the welded joints before and after the laser shock peening on each region is carried out; a combination of tensile fracture and impact toughness fracture morphology analyses of laser shock peening on the welded joint strength and toughness regulation mechanism are also completed. The results show that the laser shock peening can refine the microstructure of the welded joint effectively, the microhardness of all areas of the joint increases and the weld residual tensile stresses are transformed into beneficial residual compressive stresses, affecting a layer depth of 600 μm. In addition, the strength and impact toughness of welded joints of HC420LA low-alloy high-strength steel are improved.

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Section: Resultssupporting

confidence: 90%

Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel

et al. 2023

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“…For both P = 2 GPa and P = 5 GPa, since c e > c p , the initial elastic loading front becomes more distant to the plastic loading front, creating the so-called elastic precursor, which is a typical feature of stress wave propagation induced by laser impact. This precursor can be experimentally observed in backface velocity measurements [24,25,32]. As a complement to Figures 4 and 8, Table 6 presents the average relative errors between the numerical schemes and analytical expressions.…”

Section: Discussionmentioning

confidence: 70%

Exact expressions of the uniaxial perfectly elasto-plastic stress wave and induced mechanical fields in the case of a finite impact: application to laser shock peening

Lapostolle,

Morin,

Derrien

et al. 2023

Comptes Rendus. Mécanique

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“…In the light-weight design of the components that are used for aerospace applications, in wind power plants and in the automotive industry, for instance, an optimal combination of different materials is the key requirement to obtain the desired microstructural and mechanical properties, and thereby improve the functionality of the part [ 1 , 2 , 3 ]. The materials are selected based on their unique properties (mechanical, electrical, physical and chemical) and their strength-to-weight ratio.…”

Section: Introductionmentioning

confidence: 99%

Influence of Friction Riveting Parameters on the Dissimilar Joint Formation and Strength

et al. 2022

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Friction riveting represents a promising technology for joining similar and/or dissimilar materials of light-weight components. However, the main drawback of the technology is that it is primarily used only with special machines for friction welding that have a force control. In this study we used accessible CNC machines with a position control. A set of friction riveting experiments was performed to establish the relationship between the processing parameters, the rivet formation and its mechanical strength. During the manufacturing process, the axial force and torque were constantly measured. The fabricated joints were examined using an X-ray imaging technique, microstructural analyses, and mechanical tests. The samples were subjected to the pull-out test to analyse the joints’ strength and determine the failure mode type. In addition, a correlation between the friction riveting processing parameters, the rivet penetration depth, the rivet shape and the joint strength was established. The results depict that a higher axial force in the first production phase at the higher feeding rate increases the penetration depth, while in the second phase at lower feeding rate, an anchoring shape of a rivet forms.

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New methodology of dynamical material response of dissimilar FSWed Al alloy joint under high strain rate laser shock loading

Cited by 9 publications

References 53 publications

Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel

Study on the Microstructure and Properties of Welded Joints of Laser Shock Peening on HC420LA Low-Alloy High-Tensile Steel

Exact expressions of the uniaxial perfectly elasto-plastic stress wave and induced mechanical fields in the case of a finite impact: application to laser shock peening

Influence of Friction Riveting Parameters on the Dissimilar Joint Formation and Strength

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