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Heat-affected zone

About: Heat-affected zone is a research topic. Over the lifetime, 18787 publications have been published within this topic receiving 231744 citations.


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Journal ArticleDOI
TL;DR: Optimization of welding for thermoplastic parts strongly depends on the material properties, part design, as well as the welding operating technology conditions as mentioned in this paper, which requires laser transmission welding requires...
Abstract: Optimization of welding for thermoplastic parts strongly depends on the material properties, part design, as well as the welding operating technology conditions. Laser transmission welding requires...

101 citations

Journal ArticleDOI
TL;DR: In this paper, a model 6061-T6 aluminum alloy system fabricated by friction stir weld joining extruded sandwich panels with a triangular corrugated core was used to investigate the dynamic deformation and fracture processes.
Abstract: Light metal sandwich panel structures with cellular cores have attracted interest for multifunctional applications which exploit their high bend strength and impact energy absorption. This concept has been explored here using a model 6061-T6 aluminum alloy system fabricated by friction stir weld joining extruded sandwich panels with a triangular corrugated core. Micro-hardness and miniature tensile coupon testing revealed that friction stir welding reduced the strength and ductility in the welds and a narrow heat affected zone on either side of the weld by approximately 30%. Square, edge clamped sandwich panels and solid plates of equal mass per unit area were subjected to localized impulsive loading by the impact of explosively accelerated, water saturated, sand shells. The hydrodynamic load and impulse applied by the sand were gradually increased by reducing the stand-off distance between the test charge and panel surfaces. The sandwich panels suffered global bending and stretching, and localized core crushing. As the pressure applied by the sand increased, face sheet fracture by a combination of tensile stretching and shear-off occurred first at the two clamped edges of the panels that were parallel with the corrugation and weld direction. The plane of these fractures always lay within the heat affected zone of the longitudinal welds. For the most intensively loaded panels additional cracks occurred at the other clamped boundaries and in the center of the panel. To investigate the dynamic deformation and fracture processes, a particle-based method has been used to simulate the impulsive loading of the panels. This has been combined with a finite element analysis utilizing a modified Johnson–Cook constitutive relation and a Cockcroft– Latham fracture criterion that accounted for local variation in material properties. The fully coupled simulation approach enabled the relationships between the soilexplosive test charge design, panel geometry, spatially varying material properties and the panel’s deformation and dynamic failure responses to be explored. This comprehensive study reveals the existence of a strong instability in the loading that results from changes in sand particle reflection during dynamic evolution of the panel’s surface topology. Significant fluid–structure interaction effects are also discovered at the sample sides and corners due to changes of the sand reflection angle by the edge clamping system.

101 citations

Journal ArticleDOI
A.H. Yaghi1, T H Hyde1, Adib A. Becker1, J.A. Williams1, Wei Sun1 
TL;DR: In this article, a brief review of weld simulation and residual stress modelling using the finite element (FE) method is presented, where the method of FE analysis of welded sections of P91 pipes is described.

101 citations

Journal ArticleDOI
TL;DR: The microstructure, microhardness and corrosion behavior in five zones from the weld metal to base metal of a 2205 duplex stainless steel joint, which was welded by double-pass tungsten inert gas arc welding with filler wire, were investigated systematically as discussed by the authors.

101 citations

Journal ArticleDOI
TL;DR: In this article, the authors measured the mechanical properties of weld material taken from a single weld bead laid down on a 316L steel plate using the Digital Image Correlation method (DIC).

101 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023229
2022548
2021270
2020365
2019389
2018463