Browsing by Subject "dodatki stopowe"

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Kinetyka przemian fazowych przechłodzonego austenitu w chromowo-molibdenowej stali narzędziowej do pracy na gorąco
(Data obrony: 2019-09-30) Kudra, Kamil
Wydział Inżynierii Metali i Informatyki Przemysłowej
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Kształtowanie mikrotruktury wieloskładnikowego brązu krzemowego
(Data obrony: 2019-09-26) Wójs, Marcin
Wydział Odlewnictwa
Access status: Open Access ,
Methods of introducing alloying elements into liquid magnesium
(2014) Kapinos, Dawid; Augustyn, Bogusław; Szymanek, Marcin
In recent years, magnesium alloys have gained widespread popularity as construction materials. This is due to their low density, high strength properties, and advances in their production technology. Properties of magnesium alloys depend primarily on the type, quantity, and quality of elements present in their composition. It is therefore necessary to carry out research on the further optimisation of the production technology of these alloys. This article presents the results of studies carried out in order to determine the type, form, and parameters of the process of introducing selected alloying elements to magnesium in a manner which enables the manufacture of alloys with predetermined chemical composition. As part of the work, elements such as Al, Zn, Mn, Zr, Si, Cu, Ca, as well as rare earth elements (RE) were introduced into the liquid magnesium. The alloying elements were introduced into the melt at different temperatures in either a metallic form or as master alloys. While conducting studies, respective solubility graphs were plotted for the alloying elements showing the time taken for each element to dissolve to the required form at a specific temperature and concentration. The studies resulted in the development of several techniques of introducing selected alloying elements, which enabled the manufacture of various types of alloys.
Access status: Open Access ,
The influence of selected alloying elements on the microstructure, selected mechanical and technological properties of brasses
(2013) Kozana, Janusz; Rzadkosz, Stanisław; Garbacz-Klempka, Aldona; Piękoś, Marcin; Cieślak, Witold
The research aimed at assessing the influence of alloying elements, such as Al, Si, Ni, Pb and Bi on the chosen alloys of Cu-Zn. Microstructures were examined with the useof optical and scanning microscopy with X-ray microanalysis. The properties of the received alloys were determined with regard to changes in the mechanical parameters, namely $R_{m}$, $A_{5}$, HB, also, machinability changes were assessed as well as proclivity to hot fracturing of Cu-Zn alloys with additives of lead and bismuth. The results indicate the possibility of obtaining very high mechanical properties: $R_{m}$ up to 700 MPa, hardness within the range of 130-180 HB and $A_{5}$ from 3 to 30%. Also, in the case of the researched alloys, the machining and hot fracturing results look promising.
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Wpływ dodatków stopowych na właściwości wytrzymałościowe stopu AlSi w podwyższonych temperaturach.
(Data obrony: 2019-09-24) Banaszek, Krzysztof
Wydział Odlewnictwa
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Wpływ dodatków stopowych na właściwości żeliwa białego
(Data obrony: 2020-09-30) Kawiński, Michał
Wydział Odlewnictwa
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Wpływ krzemu na właściwości spiekanych stali manganowych
(Data obrony: 2019-07-10) Głowacz, Paulina
Wydział Inżynierii Mechanicznej i Robotyki