Temat: gas welding - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Welding and Corrosion Behavior of AISI H13 Welds: The Effect of Filler Metal on the Microstructural Evolutions
Autorzy:: Varmaziar, Sadegh
Mostaan, Hossein
Rafiei, Mahdi
Yeganeh, Mahdi
Powiązania:: https://bibliotekanauki.pl/articles/2049365.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: AISI H13 tool steel
gas tungsten arc welding
filler metal
corrosion
microstructure
Opis:: Welding of AISI H13 tool steel which is mainly used in mold making is difficult due to the some alloying elements and it high hardenability. The effect filler metal composition on the microstructural changes, phase evolutions, and hardness during gas tungsten arc welding of AISI H13 hot work tool steel was investigated. Corrosion resistance of each weld was studied. For this purpose, four filler metals i.e. ER 312, ER NiCrMo-3, ER 80S, and 18Ni maraging steel were supplied. Potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS) were used to study the corrosion behavior of weldments. It was found the ER 80S weld showed the highest hardness owing to fully martensitic microstructure. The hardness in ER 312 and ER NiCrMo3 weld metals was noticeably lower than that of the other weld metals in which the microstructures mainly consisted of austenite phase. The results showed that the corrosion rate of ER 312 weld metal was lower than that other weld metals which is due to the high chromium content in this weld metal. The corrosion rate of ER NiCrMo-3 was lower than that of 18Ni maraging weld. The obtained results from EIS tests confirm the findings of potentiodynamic polarization tests.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 3; 839-846
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Partially Melted Zone in Mg-Al Type Alloy After Gas-tungsten Arc Welding
Autorzy:: Braszczyńska-Malik, K. N.
Przełożyńska, E.
Mróz, M.
Powiązania:: https://bibliotekanauki.pl/articles/381760.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Mg-Al-Zn alloy
gas tungsten arc welding
partially melted zone
stop Mg-Al-Zn
spawanie łukowe
strefa przetopienia
Opis:: The gas-tungsten arc (GTA) welding behaviors of the commercial AZ91 magnesium alloy were examined in terms of microstructure characteristics. This study focused on the effects of the GTAW process parameters (like welding current, welding speed and method of additional cooling of the welded samples) on the size of the fusion zone (FZ) and partially melted zone (PMZ). The PMZ morphology of the eutectic regions changed from less to more divorced in the direction from the FZ to the base metal. The largest PMZ was obtained at a low welding speed (3.33 mm/s) and without additional water cooling of the samples.
Źródło:: Archives of Foundry Engineering; 2013, 13, 2 spec.; 18-21
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Structure of MMCs with SiC Particles after Gas-tungsten Arc Welding
Autorzy:: Przełożyńska, E.
Braszczyńska-Malik, K. N.
Mróz, M.
Powiązania:: https://bibliotekanauki.pl/articles/379546.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: magnesium matrix composite
gas tungsten arc welding
Mg-Al-Mn alloy
SiC particle
microstructure
kompozyt magnezowy
spawanie łukowe
stop Mg-Al-Mn
cząstka SiC
mikrostruktura
Opis:: The gas-tungsten arc (GTA) welding behaviors of a magnesium matrix composite reinforced with SiC particles were examined in terms of microstructure characteristics and process efficiencies. This study focused on the effects of the GTAW process parameters (like welding current in the range of 100/200 A) on the size of the fusion zone (FZ). The analyses revealed the strong influence of the GTA welding process on the width and depth of the fusion zone and also on the refinement of the microstructure in the fusion zone. Additionally, the results of dendrite arm size (DAS) measurements were presented.
Źródło:: Archives of Foundry Engineering; 2015, 15, 4; 65-68
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Effect of Shielding Gas Composition on Geometry and Austenite Formation in Low Power Pulsed Nd:YAG Laser Welded 2205 Duplex Stainless Steel
Autorzy:: Gozarganji, Hajibaba, E.
Farnia, A.
Ebrahimnia, M.
Powiązania:: https://bibliotekanauki.pl/articles/2049428.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: low power pulsed Nd:YAG laser welding
duplex stainless steel
shielding gas
nitrogen
austenite formation
Opis:: This paper presents an investigation into effect of nitrogen content of shielding gas mixture on weld geometry, microstructure and hardness of pulsed laser welded 2205 duplex stainless steel. Full penetration autogenous welding was performed on 2 mm thick plates using a low power pulsed Nd: YAG laser. light and scanning electron microscopy were used to study the resulting microstructures. It is observed that 2 mm full penetrated joint decreases to 1.8 mm by dominating nitrogen in argon-nitrogen mixture. Different morphologies of austenite phase as well as an increase of 8% of its content can be observed in pure nitrogen shielded welds. Average weld grain size in sample which is welded in nitrogen atmosphere stands at approximately 41 μm which is smallerthan that of argon atmosphere which is about 51 μm. Micro-hardness test reveals that hardness values increase from 280 HV in base metal to 307 HV in weld center line and the shielding gas mixture does not significantly influence the weld hardness.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 1; 187-195
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Gas Mixtures for Welding with Micro-Jet Cooling
Gazowe mieszanki do spawania z chłodzeniem mikro-jetowym
Autorzy:: Węgrzyn, T.
Powiązania:: https://bibliotekanauki.pl/articles/352813.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: welding
micro-jet cooling
weld
metallographic structure
gas mixtures
spawanie
chłodzenie mikro-jet
spoina
struktura metalograficzna
mieszanka gazowa
Opis:: Welding with micro-jet cooling after was tested only for MIG and MAG processes. For micro-jet gases was tested only argon, helium and nitrogen. A paper presents a piece of information about gas mixtures for micro-jet cooling after in welding. There are put down information about gas mixtures that could be chosen both for MAG welding and for micro-jet process. There were given main information about influence of various micro-jet gas mixtures on metallographic structure of steel welds. Mechanical properties of weld was presented in terms of various gas mixtures selection for micro-jet cooling.
Chłodzenie mikro-jetowe było stosowane tylko w spawalniczym procesie MIG i MAG, gdzie gazem osłonowym były tylko argon, hel i azot. W artykule przedstawiono informacje na temat wykorzystania mieszanek gazowych do chłodzenia mikro-jetowego. Podano informacje zarówno dla gazów, które mogą być wybrane dla spawania MAG i dla mikro-jetowego procesu. Uzyskano informacje o wpływie doboru mieszanek gazowych do chłodzenia mikro-jetowego na strukturę metalograficzną stalowych spoin. Własności mechaniczne złącza podano dla złączy wykonanych różnymi mieszankami gazowymi.
Źródło:: Archives of Metallurgy and Materials; 2015, 60, 1; 107-110
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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