D.C.: 624.072.2.012.36; 669.018.25; 539.

Mihaela Suciu, Mihai Tripa, Mircea Bejan, Liviu Suciu :

Study ofcompositebeams,workingunderuniformelydistributedefforts

Metalurgia (55) 2003, nr.3, p.5

Beams or different other elements being assimilated to beams, are parts of mechanical structures belonging to different elements in the mechanical engineering. Study of composite beams represent a complex problem. Taking into account the original method established by Daniek Gay [2], a monodimensional aproach was described, using the homogenized formulation for flection, analogue tot hat utilised for classical hemogenous beams. Some hypotesis are taken into account for this study: the composite beams with geometrical characteristics and material constants in the cross-section of beams, having components, denominated phases with limited boundaries and which are supposed perfectly sticked one to another. The phases are considered isotrope.

D.C.: 621.762; 669.2/.8.27

Daniela Florentina Tarâta: Thecharacterization ofsomepseudo-alloys ofwolframmade by themetallurgy ofpowders

Metalurgia (55) 2003, nr.3, p.11

The paper describes the technology of production and the properties of some pseudo-alloys of wolfram, used to realize electrical contacts and of the discharge electrodes for the electroerosion treating .

D.C.: 669.15’24’26’28-194.56

e. Ardelean, Teodor Heput, A. Socalici, Gheorghe Nica, A. Gavanescu: Investigationsregarding theadvancedutilisation of alloyelements for Ni and Mo alloyedsteels

Metalurgia (55) 2003, nr.3, p.14

After processing of complex non-ferrous ores, belonging to Baita-Bihor deposits, a few concentrates are obtained, aut of which molybden concentrate and nickel oxide.

The molybdenum concentrate contains molybdenum sulphide as basic component.

The paper present tests results of two concentrates utilisation during the steelmaking process, and their influence on steel alloying.

D.C.: 536.7

G. Matei, Dragos Taloi, Y. Takasaki, K. Koike, K. Itagaki: Thermodynamicstudy ofSb ₂S ₃activity inmeltsbelonging to FeS-Sb ₂S ₃system

Metalurgia (55) 2003, nr.3, p.18

The apparent vapour pressure of Sb ₂S ₃in the FeS-Sb ₂S ₃binary system al 1050 ⁰C was experimentally measured using the transportation method. The activity of Sb ₂S ₃in the FeS-Sb ₂S ₃binary system at 1050 ⁰C was derived starting

The liquidus line in the FeS-Sb ₂S ₃binary system was experimentally obtained using the differential thermal analysis (DTA) and transportation methods. The data were used for a thermodynamic study of the phase diagram of the FeS-Sb ₂S ₃binary system and the activity of Sb ₂S ₃in the FeS-Sb ₂S ₃system.

D.C.: 669.2/.8.295, 296

L. Gheorghies: Electrochemicalsynthesis ofzirconiumtitanatepowder

Metalurgia (55) 2003, nr.3, p.24

Zirconium titanate ceramic powder was prepared by an electrochemical synthesis from an aqueous solution base don a water-soluble precursor. X-ray diffraction (XRD) studiesshowed an amorphous initial formed material. The effects of progressive treatment were determined by differential thermal analysis (DTA), termogravimetric analysis (TG), X-ray diffraction, XRD, and scanning electron microscopy (SEM). The removal of physically and chemically bonded water was observed after about 100 ⁰C. crystallization of zirconium titanate occurs at low temperature ( ~ 600 ⁰C), giving rise to spherical regular particles (diameter of ~ 1,8 m m).

D.C.: 669.71

Daniela Florentina Tarâta: Considerationsconcerning theinfluence of theheathardeningtreatings ofsomealuminium alloysovertheirproperties

Metalurgia (55) 2003, nr.3, p.28

There are presented, in the paper the results of some researches concerning an alloy of aluminium-copper-magnesium, influenced by the heat hardening treatings, respecively, of the technological parameters of those regarding the mechanical properties and the machinability of boring.

D.C.: 669.15.199.55

Constantin Dulucheanu, Mihai Gramaticu, Nicolai Bancescu: Ferrito-martensiticdual-phasesteelobtained in anintercriticalquenching inmagneticfields. Structure andmechanicalproprieties

Metalurgia (55) 2003, nr.3, p.33

The structure and mechanical properties of dual-phase steels that are obtain through quenching from intercritical temperature range depend on the chemical composition of material technological parameters of intercritical quenching.

In this paper, the authors show the structure and mechanical properties (R _m, R _p0,2, A ₅, Z, KCU) of dual-phase steel with 0,09%C and 1,90%Mn, that was obtain through intercritical quenching in oil in magnetic field and (for comparison) in oil.

• MIHAELA SUCIU, TRIPA MIHAI, BEJAN MIRCEA,SUCIU LIVIU:Studiul grinzilor compozite solicitate de sarcini uniform distribuite, pag. 5
• DANIELA FLORENTINA TARATA:Caracterizarea unor pseudoaliaje ale wolframului obtinute prin metalurgia pulberilor, pag. 11
• ARDELEAN E., HEPUT TEODOR, SOCALICI A., NICA GHEORGHE, GAVANESCU A.:Cercetari privind posibilitatile de valorificare superioara a elementelor de aliere la otelurile aliate cu nichel si molibden, pag. 14
• MATEI G., TALOI DRAGOS, TAKASAKI Y., KOIKE K., ITAGAKI K.:Studiu termodinamic al activitatii Sb2S3 in topiturile din sistemul FeS-Sb2S3, pag. 18
• GHEORGHIES L.:Sinteza electrochimica a pulberii de titanat de zirconiu 24
• DANIELA FLORENTINA TARATA:Consideratii cu privire la tratamentele termice de durificare a unor aliaje de aluminiu asupra proprietatilor, pag. 28
• DULUCHEANU CONSTANTIN, GRAMATICU MIHAI, BANCESCU NICOLAI:Otel bifazic ferito-martensitic obtinut prin calire intercritica in camp magnetic. Structura si proprietati mecanice, pag. 33

• Informatii din metalurgia mondiala, I
• Semnalari, IV
• Stiri, VII
• Stiri de presa, VII
• Congrese-Targuri, X
• Carti noi, XIII
• Recenzie, XIV-XV
• Carti aparute la Editura Stiintifica F.M.R., XVI-XIX
• Revista Revistelor, 17, 23, 27, 38, III