Optimization of laser welding of tri – metal joint via response surface methodology
Journal Title: JOURNAL OF ADVANCES IN CHEMISTRY - Year 2017, Vol 13, Issue 9
Abstract
 Laser welding input parameters play a major role in determining the quality of a weld joint. In the nuclear power plants, hybrid structures of nickel and steel alloys offer an advantage in comparison to conventional materials, e.g. in heat exchanger tube areas. Due to demand in the nuclear industry for new material combinations based on commercially available and qualified materials, research into thermal joining of dissimilar materials has been initiated. The use of laser for joining mild steel / nickel with 316L austenitic stainless steel filler material and structures offers some advantages compared with usual thermal joining processes. The main aim is the control of phase formation, which occurs during thermal joining of mild steel to nickel. In this research work microstructure study and optimization of laser welding of mild steel / nickel sheets with wire feeding was done using Central Composite Design(CCD) and Response Surface Methodology (RSM) are used to build the mathematical model. By means of the laser power, welding speed and pulse width on the tensile strength model was developed and tested by analysis of variance method (ANOVA), the relationship between process parameters and output response and interaction among the process parameters are analyzed and discussed in detail. The scanning electron microscopes (SEM) with energy dispersive X-ray spectroscopy (EDS) technique were used for microstructure study of the bi-metal and tri-metal joints of the weld.
Authors and Affiliations
G. Krishna Kumar, C. Velmurugan, T. Kannan
Keywords
Related Articles
- EP ID EP653132
- DOI 10.24297/jac.v13i9.5735
- Views 183
- Downloads 0
Determination of Lead and Cadmium in Sugar and Cement Industry Effluents of North Karnataka
The aim of this study is to assess the extent of lead and cadmium contamination in effluent released from sugar and Cement Industries in north Karnataka. Physicochemical analysis of effluent reveals that the concentrat...
4-(3,4-Dichlorophenyl)-6-(Furan-2-yl)Pyrimidine-2-Thiol as Building Block in Heterocyclic Synthesis
Pyrimidine-2-thiol (1) has been synthesized via one-pot, three component synthesis. Its behavior towards nitrogen nucleophiles like hydrazine hydrate, ethylamine, piperidine, and 2-aminobenzoic acid has been studied. A s...
A NOVEL SYNTHETIC PROTOCOL FOR THE BIS-TRIAZOLONES DERIVATIVES THROUGH CORRESPONDING N1-ETHOXYCARBONYL-N1-TOSYLHYDRAZONATES
A simple method has been developed for the synthesis of bis-triazolones 2a-n starting from N1-ethoxycarbonyl-N1-tosylhydrazonates 1 and aliphatic diamine. It affords a number of bis-triazolones 2a-n in reasonable yield...
Prediction of Stability and Thermal conductivity of MgO Nanofluids using CCRD Statistical Design Analysis
Magnesium oxide nanopowders were synthesized by chemical reduction method in which sodium hydroxide solution was used as a reducing agent. Magnesium nitrate (MgNO3.6H2O) precursor was used for the synthesis of MgO nanopo...
Physicochemical Characteristics of Saudi Arabian Locally Produced Raw and Diluted Honeys and Their Relations to Antimicrobial Activity
The physicochemical characteristics and antibacterial activity of Saudi Arabia honeys were studied for the first time. The levels of free and total acidity, pH, ash and moisture content were in the range 1.6 ±0.17 - 15....