Cold forming of Al-5251 and Al-6082 tailored welded blanks manufactured by laser and electron beam welding

Lalvani, Himanshu; Mandal, Paranjayee

doi:10.1016/j.jmapro.2021.06.070

Cited by 15 publications

(6 citation statements)

References 22 publications

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“…Hybrid processes [ 20 , 21 ], as well as a specific type of generated beam [ 22 , 23 , 24 , 25 ] are also gaining importance. A separate guess is the issue of the impact of the heat input into the material and post-weld heat treatment of both 17-4 PH steel and other stainless steels, e.g., austenitic [ 19 , 23 , 26 , 27 ], ferritic [ 24 ], duplex [ 28 ], or aluminum [ 29 , 30 ]. This indicates that despite the fact that construction materials are characterized by good weldability, the method and effect of the heating and cooling, as well as the possible subsequent heat treatment [ 31 ] are of key importance for mechanical, plastic, or operational properties [ 12 , 13 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Post-Weld Heat Treatment on Microstructure and Hardness of Laser Beam Welded 17-4 PH Stainless Steel

2023

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This article presents the results of research on the development of the technology of laser beam butt welding of 17-4 PH stainless steel sheets and the technology of post-weld heat treatment (PWHT). The developed technology allows for favorable conditions to be obtained and for the appropriate microstructure and hardness to exist in the weld area. Moreover, it enables the fulfillment of a number of specific requirements beyond the possibilities of manual welding and other methods. The tests performed include the analysis of the microstructure with the use of light microscopy (LM) for the materials after welding and PWHT. The applied PWHT showed changes in the microstructure and mechanical properties. In all weld areas the martensitic microstructure was observed. The homogeneity of the microstructure in the area of the welded joint after PWTH was revealed. In the as-welded condition and after the PWHT with aging at 481 °C, the hardness was 440 HV5, but after aging at 621 °C, it decreased to 330–340 HV5.

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Section: Introductionmentioning

confidence: 99%

Effect of Post-Weld Heat Treatment on Microstructure and Hardness of Laser Beam Welded 17-4 PH Stainless Steel

2023

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“…Brazed specimens failed at a pressure of a little less than 800 mpa, created by the impact of loading. the stress-strain curve for the joined butt specimens of superelastic niti plates (3 mm) shows that the brazing filler metal strength is equal to approximately 800 MPa [30]. This fact can have far-reaching consequences for niti application in complex aerospace structures, and it will allow expansion of niti application with various materials, including ceramics.…”

Section: Producing Joints With Interlayer Application and Without Bra...mentioning

confidence: 99%

“…Dosing of electric arc energy in hybrid process provides 30-60 % decrease of a volume of molten metal [29]. Thus, high-strength alloys (Figure 5) [30] are also used in welding of automobile structures (so called twb -tailored welded blanks). heat treatment is used after welding (annealing at temperatures about 450 °c) to get the possibility of their mechanical deformation (stamping).…”

Section: Analysis Of Peculiarities Of Welding Using Highly-concentrat...mentioning

confidence: 99%

“…Application of the respective ductile interlayer can be a good choice for prevention of excess diffusion and compensation of thermal deformations which are due to mismatch of the coefficients of thermal expansion. performed research showed that mutual diffusion takes place at niobium contact with the ordinary forged nitinol, leading for formation of the liquid phase, which actively wets both pure niobium and NiTi [5,[25][26][27][28][29][30][31].…”

Section: Producing Joints With Interlayer Application and Without Bra...mentioning

confidence: 99%

“…thus, a high fraction of r-phase transformation is induced in this region. The authors of [30] lay a metallurgical basis for a reliable method of joining niti shape-memory alloys and superelastic alloys. It is based on application of pure niobium as a depressant, which causes contact melting with niti at acceptable temperatures.…”

Section: Producing Joints With Interlayer Application and Without Bra...mentioning

confidence: 99%

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2022

The Paton Welding J.

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the development of high-tech industries stimulates the growth of requirements for the metal of welded structures and the complex of their basic and special properties. the use of pulsed electric currents, plasma currents, pulsed electromagnetic fields and their combined effects to improve the mechanical characteristics of metals and alloys is relevant in connection with the need in replacing traditional energy-intensive technologies for treatment of welded structures with more progressive ones. the use of a pulsed barrier discharge (pbD) in the metal treatment, which generates a low-temperature plasma on the surface of the treated metal is a new approach to optimizing mechanical properties of high-strength steels for welded structures, which is based on electrophysical processes. In the work, strengthening of 25khgnmt steel as a result of pbD action on its surface was investigated. The PBD treatment of steel took place in a discharge device at an increment rate of voltage ≈ 3•10 11 V/s. the effect of pbD treatment period on Vickers hardness value (HV) of test specimens was investigated. examinations of the structure of 25khgnmt steel were carried out by the method of transmission electron microscopy to reveal its changes as a result of pbD action. It was found that values of HV after pbD treatment increase from 420 to 505 kg/mm 2 , which is accompanied by a general increase in the dislocation density and dispersion of the microstructure, which can positively affect the mechanical characteristics of 25khgnmt steel for welded structures operating under dynamic loads.

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Numerical analysis of stress & strain and thickness variation in single point incremental forming of tailor welded steel blanks

Attique,

Butt,

Mubashar

et al. 2024

Int J Adv Manuf Technol

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Cold forming of Al-5251 and Al-6082 tailored welded blanks manufactured by laser and electron beam welding

Cited by 15 publications

References 22 publications

Effect of Post-Weld Heat Treatment on Microstructure and Hardness of Laser Beam Welded 17-4 PH Stainless Steel

Effect of Post-Weld Heat Treatment on Microstructure and Hardness of Laser Beam Welded 17-4 PH Stainless Steel

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Numerical analysis of stress & strain and thickness variation in single point incremental forming of tailor welded steel blanks

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