Št. zadetkov: 9
Pregledni znanstveni članek
Oznake:
jekla;lastnosti;segregacija;difuzija;krhkost jekel;
Leto:
1993
Vir:
dLib.si Digitalna knjižnica Slovenije
Izvirni znanstveni članek
Oznake:
grain boundary segregation;entimony equilibrum segregation;Fe-Sb alloys;Fe-C-Sb alloys;Fe-Ni-Sb alloys;segregation thermodynamics;Langmuir-McLean equation;Auger electron spectroscopy;AES;intergranular fracture;embrittlement;site competition;Charpy impact tests;
The equilibrium grain boundary segregation of antimony was investigated in iron base alloys (Fe-Sb, Fe-C-Sb, Fe-Ni-Sb) after annealing at temperatures between 550°C and 750°C. Utilising Auger electron spectroscopy (AES) the concentration of antimony at intergranular fracture faces was determined as ...
Leto:
1996
Vir:
dLib.si Digitalna knjižnica Slovenije
Pregledni znanstveni članek
Oznake:
iron;iron alloys;equilibrium segregation;cosegregation;sulphur;segregation on oxides;adhesion of protective coatings;
An introduction will be given in the fundamentals of equilibrium segregation, i.e. the enrichment of atoms or ions from solid solution at surfaces, grain boundaries and interfaces, occuring at elevated temperatures. Some examples of segregation and cosegregation on iron and iron alloys will be descr ...
Leto:
2006
Vir:
dLib.si Digitalna knjižnica Slovenije
Izvirni znanstveni članek
Oznake:
iron;steel;supersaturation;steady state;porosity;blistering;metal dusting;
Reactions leading to supersaturation of iron with nitrogen, hydrogen or carbon are described and some of the consequences of the supersaturation. The formation of the thermodynamically stable state of the elements. N2(gas), H2(gas) and graphite from the supersaturated solid solutions may cause defec ...
Leto:
2004
Vir:
dLib.si Digitalna knjižnica Slovenije
Pregledni znanstveni članek
Oznake:
carburization;carbon transfer;steels;surface reactions;high temperature corrosion;internal carbide formation;metal dusting;sulfur effect;
Leto:
2002
Vir:
dLib.si Digitalna knjižnica Slovenije
Izvirni znanstveni članek
Oznake:
surface and grain boundary segregation;Fe-Sb alloys;Fe-Sn alloys;Fe-Sb-C alloys;Fe-Sn-C alloys;intergranular fracture embrittlement;
The tramp elements Sb and Sn have a strong tendency to surface segregation on iron. By LEED and AES surface structures and concentrations of Sb and Sn segregated on single crystal were determined. The surface segregation is strongly dependent on orientation, therefore recrystallization of steel shee ...
Leto:
1996
Vir:
dLib.si Digitalna knjižnica Slovenije
Izvirni znanstveni članek
Oznake:
alloy 800;grain boundary diffusion;solution of Suzuoka;sectioning method;radioactive traces;residual activity;bulk diffusion;phosphorous;phosphides;sulphur;segregation;creep process;creep cavities;minimum creep strain rate;
Industrial Alloy 800 in different specifications and melts of Alloy 800 with addition od P and S were investigated using diffusion, segregation and creep measurements to reveal the influence of the impurities and to find relations between microstructures, creep properties and self-diffusivity. Using ...
Leto:
1998
Vir:
dLib.si Digitalna knjižnica Slovenije
Izvirni znanstveni članek
Oznake:
decarburization;silicon steels;surface oxidation;antimony;
The mechanism of decarburization process of Fe-Si-Al alloy was investigated onsamples of cold rolled sheets; some of them alloyed with 0.048 wt.% Sb. The decarburization was performed in a ▫$H_2H_2O$▫ gas mixture at 840°C. It was influenced by the oxidation of the surface. Antimony influence of on d ...
Leto:
1998
Vir:
dLib.si Digitalna knjižnica Slovenije
Izvirni znanstveni članek
Oznake:
low alloy steels;carbide precipitation;carbide composition;grain boundaries;phosphorus segregation;
Raziskana je bila segregacija fosforja na kristalnih mejah pri 773 in 853 K pri treh malolegiranih jeklih z nizko vsebnostjo vanadija. Uporabljeni sta bili AES in TEM metodi. Entalpija in entropija segregacije ter fazna ravnotežja so bila termodinamično izračunana. Staranje 1000 ur je bilo zadostno ...
Leto:
1999
Vir:
dLib.si Digitalna knjižnica Slovenije