Journal ArticleDOI
Optimizing pulsed current parameters to minimize corrosion rate in gas tungsten arc welded titanium alloy
TLDR
In this article, a mathematical model has been developed to predict corrosion rate of gas tungsten arc welded titanium alloy by incorporating pulsed current parameters such as peak current, back ground current, pulse frequency and pulse-on-time.Abstract:
The preferred process for welding titanium alloy is frequently gas tungsten arc (GTA) welding due to its comparatively easier applicability and better economy. Weld fusion zones of this alloy typically exhibit coarse columnar grains and lead to inferior mechanical and metallurgical properties. In the case of single pass GTA welding of a thinner section of this alloy, the pulsed current has been found to be beneficial primarily due to grain refinement of the weld fusion zone over the conventional continuous current process. Fusion zone grain refinement is controlled by pulsed current parameters such as peak current, back ground current, pulse frequency and pulse-on-time. In this investigation, a mathematical model has been developed to predict corrosion rate of gas tungsten arc welded titanium alloy by incorporating pulsed current parameters. Four factors, five level, central composite, rotatable design matrix has been used to minimize the experimental conditions. A mathematical model has been developed by response surface method (RSM). The developed model has been optimized using genetic algorithm (GA) and contour plots to attain minimum corrosion rate in the weld fusion zone.read more
Citations
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Optimization of tensile strength in TIG welding using the Taguchi method and analysis of variance (ANOVA)
TL;DR: In this article, the welding optimization parameters and tensile strength of duplex stainless steel 2205 by tungsten inert gas welding based on Taguchi method and analysis of variance were discussed.
Journal ArticleDOI
Multi-objective parametric appraisal of pulsed current gas tungsten arc welding process by using hybrid optimization algorithms
Chander Prakash,Sunpreet Singh,Manjeet Singh,Munish Kumar Gupta,Munish Kumar Gupta,Mozammel Mia,Ankit Dhanda +6 more
TL;DR: From the soft computing modeling results, it has been observed that the HPSOSA improved the process performance and has revealed the global optimal solution within minimum interval of time.
Journal ArticleDOI
A critical review of corrosion development and rust removal techniques on the structural/environmental performance of corroded steel bridges
TL;DR: In this paper, the influence of developed rust (uniform and pitting) on the structural performance (static and dynamic) of steel members were summarized and the potential environmental impact of the corroded steel bridges was identified, including runoff of heavy metal and bacteria growth caused by iron rust.
Journal ArticleDOI
Investigation on parameter optimization for laser welded butt joint of TA15 alloy
TL;DR: In this article, the butt joints of TA15 alloy plates with 3-and 5-mm thickness were welded by fiber laser, and the relationship between macromorphology and heat input, fusion depth, and welding width were obtained.
Journal ArticleDOI
The investigation of corrosion phenomena with high throughput methods: a review
TL;DR: In this article, the authors examined some of the critical topics when developing an HTS corrosion study, such as substrate selection and preparation, sample presentation, electrochemical cell design, instrumentation, electrode design, and assay selection.
References
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Book
Quality by Experimental Design
TL;DR: In this article, the authors present a case history of an experimental investigation on the development of a Factorial 2-Level Design with blocks and Latin Square Nested Designs (FFN).
Journal ArticleDOI
Weld microstructure refinement in a 1441 grade aluminium-lithium alloy
TL;DR: In this paper, the weld beads obtained under (i) continuous current (CC), (ii) pulsed current (PC), and (iii) arc oscillation (AO) conditions for their macro- and microstructural details were compared.