Wszystkie pola: Węglowski, Marek Stanisław - Katalog OPAC zbiorów

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Tytuł:: Microstructure and Properties of Dissimilar Joints of AISI 430 Steel with Inconel 625 Obtained by Electron Beam Welding
Autorzy:: Dziekońska, Małgorzata
Jonda, Ewa
Sroka, Marek
Węglowski, Marek Stanisław
Jung, Tymoteusz
Powiązania:: https://bibliotekanauki.pl/articles/2201845.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: dissimilar joint
Inconel 625
Inconel 625 alloy
AISI 430
AISI 430 stainless steel
electron beam welding
microstructure
properties
Opis:: Electron Beam Welding (EBM) is a high-energy density fusion process where joint is bombarded to be welded with strongly focused beam of electrons. This method is often used for advanced materials and complex, critical parts, like turbine rotors, but it can also be used for many simpler processes involving large production runs. It is very suitable for butt welding materials of different thicknesses. The aim of this work was to study the microstructure, hardness, and electrochemical corrosion behavior between the dissimilar welds were investigated. Electron Beam Welding of dissimilar steel alloys Inconel 625 and AISI 430 was studied. In welding process there was used only welded materials without filling material. Results showed the microstructure of the weld solidified in dendritic morphology. The microstructure of fusion zone showed that dendrites grew in different directions for each grain. The dendrites and columnar grains are mainly exposed to the fusion boundary with some equiaxed grains. The hardness of the overall joint was non-uniform. The highest hardness of the HAZ/Inconel 625 (the heat-affected zone) was 258 HV, and the lowest weld zone hardness was 178 HV. The decrease in weld hardness may be due to the linear welding energy, which led to grain growth and excessive cooling. HAZ/AISI 430 steel has the lowest current density and the highest corrosion potential. Steel has a more negative corrosion potential and a lower corrosion current density than joints, likely due to higher levels of chromium. In this study, a metallographic investigation of the joints revealed no defects such as microcracks or pores. The melting temperatures of the two materials were quite different, but with the help of gravity, stainless steel acts as a permanent joint, like a rivet.
Źródło:: Advances in Science and Technology. Research Journal; 2022, 16, 4; 232--242
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Tytuł:: The influence of welding method on microstructure and mechanical properties of aluminum alloys joints
Wpływ metody spawania na mikrostrukturę i właściwości mechaniczne złączy ze stopów aluminium
Autorzy:: Noga, Piotr
Richert, Maria
Węglowski, Marek Stanisław
Powiązania:: https://bibliotekanauki.pl/articles/264317.pdf
Data publikacji:: 2019
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: aluminum alloys welding
aluminum alloys
welding
TIG
MIG
EBW
FSW
spawanie stopów aluminium
stopy aluminium
spawanie
Opis:: Rapid technological progress in recent years has led to an intensified interest in alternative methods of joining metals. Today’s industry is constantly demanding new joining processes, which enable high-quality welded joints in a wide range of thicknesses of combined materials at low production cost. There are at least several dozen welding methods currently available. The selection of the process depends on the type of welded materials, acceptable heat input, as well as future working conditions. The paper presents the results of the microstructural examination and mechanical properties of joints of the aluminum alloy for plastic working such as EN AW-6082. The paper presents the results of microstructural observations and mechanical properties of EN AW-6082 aluminum alloy. Methods used for joining were successively TIG (welding with a non-consumable electrode in a shield of inert gases), MIG (welding with a consumable electrode in a shield of inert gases), EBW (electron beam welding) along with FSW (friction stir welding method). TIG (welding with a non-consumable electrode in a shield of inert gases), MIG (welding with a consumable electrode in a shield of inert gases), EBW (electron beam welding) along with FSW (friction stir welding method) were used as joining techniques.
Współczesny przemysł wymaga opracowania i udoskonalania metod, które umożliwiają uzyskanie wysokiej jakości połączeń w szerokim zakresie grubości łączonych materiałów oraz obniżenie kosztu produkcji. Istnieje kilkadziesiąt metod spawania. Proces ten trzeba dostosować do rodzaju spajanych materiałów, dostępnych źródeł energii, a także do przyszłych warunków pracy urządzeń. W pracy przedstawiono wyniki badań łączenia najpopularniejszego stopu do przeróbki plastycznej, jakim jest stop EN AW-6082. Metodami wykorzystanymi do łączenia były zarówno najbardziej popularne techniki spawania: TIG (spawanie elektrodą nietopliwą w osłonie gazów obojętnych), MIG (spawanie elektrodą topliwą w osłonie gazów obojętnych), metoda wysokoenergetyczna EBW (spawanie wiązką elektronową), jak również metoda zgrzewania tarciowego z mieszaniem materiały zgrzeiny – FSW.
Źródło:: Metallurgy and Foundry Engineering; 2019, 45, 2; 43-50
1230-2325
2300-8377
Pojawia się w:: Metallurgy and Foundry Engineering
Dostawca treści:: Biblioteka Nauki