Topic
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.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the effect of processing variables on fatigue life, impact energy and bead penetration of AA6061 joints produced by MIG robotic welding process was analyzed in the present study, different samples were obtained by employing arc voltages of 20, 23 and 26 V, welding currents of 110, 130 and 150 A, welding speeds of 50, 60 and 70 cm/min.
Abstract: Aluminum alloys forming to AA6061 have a wide range of desirable properties which are used in different industries such as aircraft industry and other aerospace structures. The effect of processing variables on fatigue life, impact energy and bead penetration of AA6061 joints produced by MIG robotic welding process was analyzed in the present study. Different samples were obtained by employing arc voltages of 20, 23 and 26 V, welding currents of 110, 130 and 150 A, welding speeds of 50, 60 and 70 cm/min. After finishing of the welding process, the mechanical properties of the samples were evaluated by means of fatigue and impact test at room temperature and the depth of weld penetration was measured in all of geometrical specimens. Results were clearly illustrated that when heat input increases, fatigue life of weld metal decreases whereas impact energy of weld metal increases in first and then drops significantly. A linear increase in depth of penetration with increasing welding current and arc voltage was also observed. The biggest penetration in this investigation was observed for 60 cm/min welding speed.
59 citations
TL;DR: In this article, a Ni-rich NiTi-20Zr (at.%) high temperature shape memory alloy was used for laser welding and defect-free welds were obtained with a conduction welding mode.
59 citations
TL;DR: In this paper, the microstructure of dissimilar joint was investigated using optical microscope, X-ray diffraction and scanning electron microscope, and the results showed that the microstructures of this joint is lath martensite and few ferrite, upper bainite and widmanstatten ferrite formed in heat-affected zone (HAZ) of low carbon steel.
59 citations
TL;DR: In this paper, the authors used the finite element method (FEM) to predict the residual stresses in a repair weld of a stainless steel clad plate and investigated the effect of repair width on residual stresses.
59 citations
TL;DR: In this paper, a low transformation temperature welding wire was applied to fabrication of fillet welded T joints, and the welding angular distortion and the temperature profile of the weld metal were continuously measured during the welding process.
Abstract: A newly developed low transformation temperature welding wire, of which the transformation start temperature is lower than that of conventional welding wires, was applied to fabrication of fillet welded T joints. The welding angular distortion and the temperature profile of the weld metal were continuously measured during the welding process. The angular distortion of the fabricated T joint was reduced when the weld metal reached the martensitic transformation start temperature. The residual angular distortion was less with the low transformation temperature welding wire than that with the conventional welding wires. The welding distortion of T joints was calculated by a numerical simulation with consideration of the effect of phase transformation under weld thermal cycles. The welding distortion was reproduced with high accuracy in the numerical simulation. Results of the numerical simulation also determined that there was a direct correspondence between the transformation expansion of the weld m...
59 citations