The Experts below are selected from a list of 255252 Experts worldwide ranked by ideXlab platform

Naci Sevinc - One of the best experts on this subject based on the ideXlab platform.

  • production of in situ aluminum titanium diboride master alloy formed by slag metal Reaction
    Journal of Alloys and Compounds, 2011
    Co-Authors: Ahmad Changizi, Ali Kalkanli, Naci Sevinc
    Abstract:

    Abstract Al–TiB 2 master alloys have received much attention in recent years owing to their potential as efficient grain refiners for aluminum foundry alloys. In this study, the process of production of master alloys was investigated to develop a low cost method, namely, slag–metal Reaction. This method can be used to fabricate Al–TiB 2 master alloy in situ from the TiO 2 –H 3 BO 3 –Na 3 AlF 6 and Al system. Since the price of the raw materials is low and the technology is simple, the processing technique appears to reduce the cost of the master alloy. Because of exothermic Reactions, not much energy is needed to melt materials. In this process, Titanium diboride particles were formed in situ through the Reactions of TiO 2 , H 3 BO 3 and Na 3 AlF 6 . Results showed that when the aluminum melted, the condensed TiB 2 particles that formed in situ were spherical with an average diameter of 1 μm. Furthermore, these TiB 2 particles were distributed uniformly through the master alloy.

Ahmad Changizi - One of the best experts on this subject based on the ideXlab platform.

  • production of in situ aluminum titanium diboride master alloy formed by slag metal Reaction
    Journal of Alloys and Compounds, 2011
    Co-Authors: Ahmad Changizi, Ali Kalkanli, Naci Sevinc
    Abstract:

    Abstract Al–TiB 2 master alloys have received much attention in recent years owing to their potential as efficient grain refiners for aluminum foundry alloys. In this study, the process of production of master alloys was investigated to develop a low cost method, namely, slag–metal Reaction. This method can be used to fabricate Al–TiB 2 master alloy in situ from the TiO 2 –H 3 BO 3 –Na 3 AlF 6 and Al system. Since the price of the raw materials is low and the technology is simple, the processing technique appears to reduce the cost of the master alloy. Because of exothermic Reactions, not much energy is needed to melt materials. In this process, Titanium diboride particles were formed in situ through the Reactions of TiO 2 , H 3 BO 3 and Na 3 AlF 6 . Results showed that when the aluminum melted, the condensed TiB 2 particles that formed in situ were spherical with an average diameter of 1 μm. Furthermore, these TiB 2 particles were distributed uniformly through the master alloy.

Ali Kalkanli - One of the best experts on this subject based on the ideXlab platform.

  • production of in situ aluminum titanium diboride master alloy formed by slag metal Reaction
    Journal of Alloys and Compounds, 2011
    Co-Authors: Ahmad Changizi, Ali Kalkanli, Naci Sevinc
    Abstract:

    Abstract Al–TiB 2 master alloys have received much attention in recent years owing to their potential as efficient grain refiners for aluminum foundry alloys. In this study, the process of production of master alloys was investigated to develop a low cost method, namely, slag–metal Reaction. This method can be used to fabricate Al–TiB 2 master alloy in situ from the TiO 2 –H 3 BO 3 –Na 3 AlF 6 and Al system. Since the price of the raw materials is low and the technology is simple, the processing technique appears to reduce the cost of the master alloy. Because of exothermic Reactions, not much energy is needed to melt materials. In this process, Titanium diboride particles were formed in situ through the Reactions of TiO 2 , H 3 BO 3 and Na 3 AlF 6 . Results showed that when the aluminum melted, the condensed TiB 2 particles that formed in situ were spherical with an average diameter of 1 μm. Furthermore, these TiB 2 particles were distributed uniformly through the master alloy.

Gautam U. - One of the best experts on this subject based on the ideXlab platform.

  • Effect of Flux in Submerged Arc Welding- A Review
    AI Publications, 2017
    Co-Authors: Gautam U.
    Abstract:

    Submerged arc fluxes play a very complex role during the welding process. Besides protecting the weld pool and influencing the bead geometry, fluxes also melt in a specific temperature range, refine the weld metal, as well as take part in slag metal Reaction before finally being removed as slag. Welding flux constitutes nearly half of the cost in SAW process. Over the years, development of better welding flux compositions in terms of mechanical properties and productivity, which are economically cost effective too, has caught the eye of many researchers. In the present review paper, research work carried out by various researchers in the field of welding flux development has been reviewed

Tapan Kumar Pal - One of the best experts on this subject based on the ideXlab platform.

  • prediction of submerged arc weld metal composition from flux ingredients with the help of statistical design of mixture experiment
    Scandinavian Journal of Metallurgy, 2004
    Co-Authors: P Kanjilal, Sujit Kumar Majumdar, Tapan Kumar Pal
    Abstract:

    A prediction model has been developed for submerged arc weld-metal chemical composition in terms of flux ingredients with the help of statistical experiments for mixture (extreme vertices design). Bead-on-plate weld deposits as per statistical mixture design experiments were performed at the following welding parameters: current (400 A), voltage (26 V), speed (4.65 mm/s) and electrode extension (30 mm) using CaO-MgO-CaF 2 -Al 2 O 3 flux system. The results show that some of the individual flux ingredients and their binary mixtures have a predominant effect on weld-metal oxygen, manganese, silicon, sulphur, nickel and carbon content. The predicted results show a reasonably good agreement with the experimental results, which were obtained by performing the actual experiments based on a randomly designed flux. Analysis of the experimental data indicate that several mechanisms such as basicity index, oxygen potential, oxide stability, viscosity, electrode chemical Reaction, kinetics of Slag-Metal Reaction, etc. are operating simultaneously to yield the final weld-metal composition.