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1
Relationship of structure and properties of Al-Si alloys.
Taran Yu.N., Kutsova V.Z., Uzlov K.I.
Inżynieria Materiałowa
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1998
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R. XIX, nr 3
588-591
EN
The aim of the present investigation had to be study of combined influence of copper and phosphorous on the structure and properties of hypereutectic Al-Si alloys. In the structure of investigated alloys it could be possible to fix together with aluminium and silicon solid solutions intermetallic phases contained Cu, P, Fe. Alloys modified with phosphorous and copper have average tensile strength higher than syntetic binary ones. At the same time elongation dropping down. In the frame of the present investigation the effect of copper and phosphorous on eutectic and peritectic transformations in Al-Si system has been studied.
2
Phase transitions and structure of hypereutectic Al-Si alloys.
Taran Yu.N., Kutsova V.Z., Uzlov K.I., Evsyukova I.M.
Inżynieria Materiałowa
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1998
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R. XIX, nr 3
584-587
EN
Regularities of structural and pase transitions in hypereutectic Al-Si alloys have been studied. Peritectic (740-680 degrees centigrade) and allotropic transformations (680 degrees centigrade) has been found in studied alloys. On the base of experimental data mechanism of peritectic reaction in hypereutectic Al-Si alloys has been proposed.
3
Kinetics of bainite reaction in case irons.
Taran Yu.N., Uzlov K.I., Kutsov A.Yu., Evsyukov M.F.
Inżynieria Materiałowa
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1998
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R. XIX, nr 3
245-248
EN
In the present work the temperature intervals of phase transitions in the matrix of ductile and mottled irons and overall kinetics of bainite reaction were studied by dilatometrical method. These data were summarized in the form of time-temperature transformation (TTT) diagrams for both cast irons. It has been found that there are two C-shape curves corresponding to formation of upper and lower bainities in the studied ductile iron. This could be interpreted as a result of individual dependencies of nucleation and growth rates of upper and lower bainitic alpha-phases due to realisation of different crystalographic shear systems during transition. The phenomena is not so evident in the case of mottled iron probably due to more complicate segregation pattern in the matrix as a result of realisation of both metastable and stable eutectic reactions during solidification.
4
Interconnection between structure and properties of general purpose commercial Al-Si alloys.
Taran Yu.N., Kutsova V.Z., Uzlov K.I.
Inżynieria Materiałowa
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1998
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R. XIX, nr 3
528-531
EN
In the present investigation the effect of microalloying (modifying) elements (Na, Sr, Y, Rare-Earth, Sb, Ti, Zr) on the structure and properties of commercial general purpose alloys base on Al-Si-Mg-Mn-Fe composition has been studied. Phase equilibriums and transitions in commercial alloys have been determined by thermal, high sensivity gamma-absorbtion methods and by analisis of phase equilibriums in basic binary, ternary and four-components systems. Knowledge of structural formation allows to develope industrially used heat treatment processes and to elaborate new ones.
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