Journal ArticleDOI
Numerical modeling of inconel 738LC deposition welding: Prediction of residual stress induced cracking
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TLDR
In this paper, a predictive tool has been implemented to determine the suitable conditions for deposition welding of inconel 738LC which is particularly susceptible to hot cracking and showed the importance of the heating temperature prior to welding.About:
This article is published in Journal of Materials Processing Technology.The article was published on 2010-11-01. It has received 30 citations till now. The article focuses on the topics: Welding & Inconel.read more
Citations
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Melt pool simulation for the evaluation of process parameters in selective laser melting
TL;DR: In this article, a 3D numerical model for the selective laser melting process is presented that allows a detailed look into the process dynamics at comparably low calculation effort, combining a finite difference method with a combined level set volume of fluid method.
Journal ArticleDOI
Reduction of the hot cracking sensitivity of CM-247LC superalloy processed by laser cladding using induction preheating
Guillaume Bidron,Anis Doghri,Thierry Malot,Florent Fournier-Dit-Chabert,Marc Thomas,Patrice Peyre +5 more
TL;DR: In this article, a detailed investigation of the effect of cladding parameters on the crack susceptibility was carried out on coupons that received a low pre-heating condition, and attempts were made to reduce crack defects by using an induction preheating, with higher temperatures in the range of 800-1100°C.
Journal ArticleDOI
Effect of heat input on cracking in laser solid formed DZ4125 superalloy
TL;DR: In this article, a DZ4125 superalloy is deposited on an as-cast substrate using laser solid forming (LSF) in order to investigate the effect of heat input on the cracking in the deposit and the heat affected zone (HAZ) in the substrate.
Journal ArticleDOI
Finite element simulation of welding distortions in ultra-high strength steel S960 MC including comprehensive thermal and solid-state phase transformation models
TL;DR: In this paper, the effect of solid-state phase transformation (SSPT) on welding-induced deformations was investigated for a single bead-on-plate welding of an ultra-high strength carbon steel.
Journal ArticleDOI
Effect of Preweld Heat Treatment on the Microstructure of Heat-Affected Zone (HAZ) and Weldability of Inconel 939 Superalloy
M. A. González Albarrán,D.I. Martínez,Eduardo Díaz,Jorge Díaz,I. Guzman,E. Saucedo,A. Ma. Guzman +6 more
TL;DR: In this paper, the effect of two preweld heat treatments on the final microstructure of a heat-affected zone and its effect on the weldability of the superalloy Inconel 939 have been analyzed.
References
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Journal ArticleDOI
A new finite element model for welding heat sources
TL;DR: In this article, a double ellipsoidal geometry is proposed to model both shallow penetration arc welding processes and the deeper penetration laser and electron beam processes, which can be easily changed to handle non-axisymmetric cases such as strip electrodes or dissimilar metal joining.
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Nickel based superalloy welding practices for industrial gas turbine applications
TL;DR: In this article, the authors describe the characteristic defects found as a result of welding the more difficult, highly alloyed materials and review a number of welding processes used in the manufacture and repair of nickel alloy components.
Journal ArticleDOI
Modelling of non-isothermal transformations in alloys containing a particle distribution
Ole Runar Myhr,Øystein Grong +1 more
TL;DR: In this paper, a framework for modeling coupled nucleation, growth and coarsening in diluted alloys is presented, based on the method of finite differences, where the particle distribution is divided into a series of discrete size classes, each represented by a control volume.
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Contribution of constitutional liquation of gamma prime precipitate to weld HAZ cracking of cast Inconel 738 superalloy
TL;DR: The weld heat affected zone (HAZ) cracking in cast Inconel 738 superalloy has been examined in this article, where the main strengthening phase of the alloy c 0, which is also present in significant volume after pre-weld heat treatment, was found to contribute significantly to grain boundary liquation and its attendant cracking in the HAZ.
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Numerical analysis of GTA welding process with emphasis on post-solidification phase transformation effects on residual stresses
TL;DR: In this paper, the residual stress state in spot welds made in an HY-100 steel disk by an autogenous gas tungsten arc (GTA) welding process was analyzed.