A Real-Time Quantitative Analysis of Atmospheric Contributions of Hydrogen to Weld Arc Plasmas
Hydrogen contamination of weldments, particularly in the welded joints of high strength steels, can cause significant reductions in weld integrity, often resulting in failure of the joint. Inspection and repair of hydrogen assisted cracks in weldments is both costly and time consuming, thus real-time methods of detecting hydrogen levels during welding are essential. Analytical emission spectroscopy is a promising method of weld analysis, providing quantitative information in real time about the amount of hydrogen in the arc atmosphere.
KeywordsWelding Process Atmospheric Humidity Consumable Electrode Diffusible Hydrogen Content Flux Coating
Unable to display preview. Download preview PDF.
- 1.Dorschu, K. E., “Factors Affecting Weld Metal Properties in Carbon and Low Alloy Pressure Vessel Steels”, Weld Research Council Bulletin, 231, pp. 28–31.Google Scholar
- 2.North, T. H. et al., “Weldability of High Strength Line Pipe Steels”, Weld. Journal, Aug. 1982, pp. 243–257s.Google Scholar
- 3.Gross, J. H., “The Status of Welding Technology in the United States”, Weld. Journal, Dec. 1983, pp. 30–36.Google Scholar
- 4.Johnson, W. H., “On Some Remarkable Changes Produced in Iron and Steel by the Action of Hydrogen and Acids”, Hydrogen Damage ASM Source Book, Mar. 1979, pp. 1–12.Google Scholar
- 5.Smith, J. A. et al., “Electrochemical Conditions at the Tip of an Advancing Stress Corrosion Crack in AISI 4340 Steel”, Hydrogen Damage ASM Source Book, Mar. 1979, pp. 255–258.Google Scholar
- 6.Speidel, M. O., “Hydrogen Embrittlement of Aluminum Alloys?”, Hydrogen Damage ASM Source Book, Mar. 1979, pp. 329–351.Google Scholar
- 7.Chew, B., “Moisture Loss and Regain by Some Basic Flux Covered Electrodes”, Weld. Journal, May 1976, pp. 127–134s.Google Scholar
- 8.White, D. R., “In Process Measurement of Hydrogen in Welding”, USA-CERL Technical Report M-86/15, Sept. 1986.Google Scholar
- 9.Shea, J. E., and Gardner, C. S., “Spectroscopic Measurement of Hydrogen Contaminations in Weld Arc Plasma”, Journal of Applied Physics, Sept. 1983, pp. 4928–4938.Google Scholar
- 10.Savage, W. F. et al., “Hydrogen-Assisted Cracking in HY-130 Weldments”, Aug. 1982, pp. 233–242sGoogle Scholar