deoxidation with zr

Effect of Ti and Zr Deoxidation on Inclusions and Oalib search

In order to investigate the effects of Ti Zr deoxidants on inclusions and microstructure of low carbon steel the experiments by Ti and Zr addition were carried out After smelting forging and rolling of the steel the effects of Ti and Zr deoxidation on inclusions and steel microstructure were studied The inclusion characteristics size A thermodynamic modeling for controls of deoxidation and oxide inclusion in molten steel was developed based on these calculations which was used for thermodynamic calculations for deoxidation slag melt equilibration and oxide melt equilibration in order to control the deoxidation and compositions of oxide inclusion of steel The results of model applications are validated with the

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Thermodynamics of Zirconium Deoxidation Equilibrium in Effect of Zr Ti combined deoxidation on the microstructure

formly during deoxidation process It has been reported that the degree of the critical supersaturation for the formation of ZrO 2 is relatively small in comparison with that of Al 2 O 3 1 2 the Effect of Zr Ti combined deoxidation on the microstructures and mechanical properties of high strength low alloy steels were investigated by means of microstructure analysis tensile and Charpy impact tests Experimental results showed the addition of Zr Ti based deoxidizing agent resulted in the formation of fine Zr Ti complex oxid Owing

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Novel electrochemical measurements on direct electro J Politechnika Śląska

Read Novel electrochemical measurements on direct electro deoxidation of solid TiO2 and ZrO2 in molten calcium chloride medium Journal of Applied Electrochemistry on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertipsdeoxidation process shows that the change from the l type to the n type inclusions occurs by decreasing the oxygen eontent to about 100 ppm 2 also the III type of inclusions can be formed at less oxygen eontent 80 100 ppm which is usually achieved by using strong deoxidizer such as Al Zr B The formed type of inclusions not only depend on the Al eontent but also on the carbon content

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Steel Deoxidation Part Two Total Materia Article38 Deoxidation Process Change to Prevent Under Riser

The deoxidation of steel is usually performed by adding Mn Si and Al or rarely by adding Cr V Ti Zr and B The deoxidation of molten steel exhibits a paradox By increasing the concentration of deoxidizer in the melt over some critical value reoxidation of steel takes placeof the deoxidation process was Zr melted at in a 75 tons capacity electric arc furnace that reduces the N in the arc by boiling in C of 0 30 C as minimum for N less than 80 PPM 7 The aluminum range was maintained between and with additions of N stabilizers such as Zr The zirconium range was from 004 to 012 The sulfur content was at maximum of and the basic

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Nitride Precipitation on Particles in Fe 10 mass Ni KEY to METALS Article

The precipitation of nitrides on deoxidation particles in an Fe 10mass Ni alloy containing 30 similar to 130 ppm O and 14 similar to 22 ppm N has been studied in the experiments where an alloy was deoxidized with Ti M M=Mg Zr and Ce and Ti/M at degrees C and then cooled to degrees C followed by holding for 0 and 60 min before quenching The total number of particles above 01 mu The deoxidation of steel is usually performed by adding Mn Si and Al or rarely by adding Cr V Ti Zr and B The deoxidation of molten steel exhibits a paradox By increasing the concentration of deoxidizer in the melt over some critical value reoxidation of steel takes place

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Characteristics of Particle Size Distribution of Formation of Inclusions in Steel Castings

steel with Ti Al Zr Y Hf and Ce and found that the num ber of oxide particles increases and the particle size de creases with an increase in deoxidation potencyis to make and cast the steel under such conditions that deoxidation with silicon and a small addition of a strong deoxidizer assures soundness The effective addition that will promote soundness without causing the formation of intergranular inclusions varies with the furnace practice and composition but may be limited to about per cent Al Zr or Ti Up to 010 per cent Ca and 015

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A Study on the Electrochemical Deoxidation Using ZrO2 DE OXIDATION OF PK942 STEEL WITH Ti AND Zr

A Study on the Electrochemical Deoxidation Using ZrO 2 Based Solid Electrolyte and a Periodic DC Voltageinclusions the addition of Zr also had a great effect on the size distribution and the number of non metallic inclusions The The result of the Zr addition was a large reduction in the total non metallic inclusion surface area

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Analysis of size distributions of primary oxide inclusions asm iron and steel asminternationalorg

Abstract The planar and spatial size distributions of primary oxide inclusions were measured in an Fe 10 mass pct Ni alloy on deoxidation with 02 mass pct M M=Si Ti Al Zr and Ce Usually minimized in steel by deoxidation with aluminum and/or silicon and vacuum degassing Hydrogen H Undesirable in steel If entrapped can cause crack formation hydrogen flakes microcracks etc Usually minimized in liquid steel by vacuum degassing or slow cooling after the austenite to ferrite transformation Calcium Ca Added to steel for sulfide shape control combines with

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Influence of Compound Deoxidation of Steel with Al Zr The Effect of Ti Zr Deoxidation on the Mechanical

4 Issues per year CiteScore 042 SCImago Journal Rank SJR Source Normalized Impact per Paper SNIP The uniformity of the mechanical properties especially elongation and impact toughness were compared between steel A which was deoxidized with Ti Zr and steel B which was deoxidized with Al

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Formation of Inclusions in Steel CastingsInfluence of compound deoxidation of steel with Al Zr

is to make and cast the steel under such conditions that deoxidation with silicon and a small addition of a strong deoxidizer assures soundness The effective addition that will promote soundness without causing the formation of intergranular inclusions varies with the furnace practice and composition but may be limited to about per cent Al Zr or Ti Up to 010 per cent Ca and 015 Heavy steel castings deoxidized with aluminium are sometimes brittle intercrystalline failed during their service along primary grain boundaries what is initiated by aluminium nitrides and so called conchoidal fractures are formed The tendency to forming the conchoidal fractures depends in

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Characteristics of Particle Size Distribution in Early Silicon in Steels ispatguru

10mass Ni alloy with Zr Mg Al Ca and Si/Mn2 is dis cussed based on the nucleation rate which depends on the interfacial energy between oxide and liquid FeSilicon in Steels Silicon Si atomic number 14 and atomic weight has density of 234 gm/cc Melting point of Si is deg C and boiling point is deg C The phase diagram of the Fe Si binary system is at Fig 1

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A Study on the Electrochemical Deoxidation Using ZrO2 USA Process for preparation of a casting having

An electrochemical deoxidation using a ZrO2 based solid electrolyte was investigated to control the interfacial oxygen concentration between the molten steel and ZrO2Prior art keywords deoxidation steel oxygen casting products Prior art date 03 09 Legal status The legal status is an assumption and is not a legal conclusion

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TROUBLESHOOTING CRACKS IN STEEL CASTINGSInfluence of compound deoxidation of steel with Al Zr

TROUBLESHOOTING CRACKS IN STEEL CASTINGS By Rodman Duncan Casteel Technical Service rod casteeltec 360 468 Heavy steel castings deoxidized with aluminium are sometimes brittle intercrystalline failed during their service along primary grain boundaries what is initiated by aluminium nitrides and so called conchoidal fractures are formed The tendency to forming the conchoidal fractures depends in

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