Schilling Titan 7 plasma spray system
Non-metallic oxide inclusions are known to influence the microstructure and properties of low alloy steel weld metal. Therefore, it is desirable to estimate the inclusion characteristics such as size distribution, number density, volume fraction, and composition as a function of welding process and weld composition. Previous work considered a sequential formation of various oxides and compounds to estimate the inclusion characteristics, however, the effect of weld metal composition and weld cooling conditions were not considered. Hence, a model based on ladle metallurgy principles and transformation kinetics involving nucleation and growth has been developed. The inclusion kinetic calculations are coupled with weld pool thermal history to estimate the inclusion characteristics for a given welding process and composition. The calculations based on this model show a complex sequential oxidation of dissolved deoxidizing elements such as Al, Ti, Si and Mn. The calculated inclusion characteristics show a good correlation with the published results.
- Research Organization:
- Oak Ridge Y-12 Plant, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OS21400
- OSTI ID:
- 170584
- Report Number(s):
- Y/DX--2249; CONF-940859--30; ON: DE96003773
- Country of Publication:
- United States
- Language:
- English
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