Wszystkie pola: aluminium and alloys - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Mechanical properties of 5083, 5059 and 7020 aluminium alloys and their joints welded by FSW
Autorzy:: Dudzik, K.
Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/246888.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: friction stir welding (FSW)
aluminium alloys
joints
welding
mechanical properties
shipbuilding
Opis:: The article presents the research results on the mechanical properties of aluminum alloy 7020 and its friction stir welded (FSW) joints. For comparison alloy 5083 – the most currently used in shipbuilding alloy was chosen as well as 5059 - the new high-strength alloy. Besides the native material alloys there were investigated their joints welded by FSW - the same method as alloy 7020. Welding parameters used for the connection of the sheets made of 7020, 5083 and 5059 alloys were presented. Metallographic analysis showed the correct construction of structural bonded joints. Friction Stir Welding (FSW) – a new technology can be successfully used for butt welding of different types of aluminum alloy sheets. FSW method can be an alternative to traditional arc welding methods i.e. MIG or TIG. The research was carried out using a static tensile test in accordance with the requirements of the Polish Standards PNEN ISO 4136:2011 and PN-EN ISO 6892-1:2010. Flat samples cut perpendicular to the direction of rolling were used. The research was conducted at the temperature of + 20ºC. The 7020 alloy has higher strength properties then alloys: 5083 and 5059. The yield stress is higher by 14.8% compared to 5083 alloy, and by 11.7% compared to the alloy 5059. Plastic properties of an alloy 7020 are the lowest, but with reserves meet the requirements of classification societies. The joints welded by FSW of 7020 alloy have higher strength properties then joints of alloys: 5083 and 5059. The yield stress achieves the highest value for alloy 7020 and is 24.2% higher than for 5083 alloy and 11.5% for the 5059 alloy. Despite the strength properties also plastic properties are best for 7020 alloy joints.
Źródło:: Journal of KONES; 2013, 20, 2; 69-73
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Mechanical properties of 5083, 5059 and 7020 aluminium alloys and their joints welded by MIG
Autorzy:: Dudzik, K.
Powiązania:: https://bibliotekanauki.pl/articles/245438.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: welding MIG
aluminum alloys
mechanical properties
Opis:: The article presents the research results on the mechanical properties of aluminum alloy 7020 and its MIG welded joints. For comparison alloy 5083 - the most currently used in shipbuilding alloy was chosen as well as 5059 -the new high-strength alloy. Besides the native material alloys there were investigated their joints welded by MIG -the same method as alloy 7020. Welding parameters used for the connection of the sheets made of 7020, 5083 and 5059 alloys were presented. Metallographic analysis showed the correct construction of structural bonded joints. The arc welding method - MIG is the most common method of joining aluminum alloys used in shipbuilding. It replaces the TIG method of providing equally high quality of joints with a much higher performance. The research was carried out using a static tensile test in accordance with the requirements of the Polish Standard PN-EN 10002:2004. Flat samples cut perpendicular to the direction of rolling were used. The research was conducted at the temperature of + 20 centigrade. The 7020 alloy has higher strength properties then alloys: 5083 and 5059. The yield stress is higher by 14.8% compared to 5083 alloy, and by 11.7% compared to the alloy 5059. Plastic properties of an alloy 7020 are the lowest, but with reserves meet the requirements of classification societies. The joints welded by MIG of 7020 alloy have higher strength properties then joints of alloys: 5083 and 5059. Plastic properties of alloy 7020 compared to 5083 alloy are smaller and at the same level as the connector alloy 5059.
Źródło:: Journal of KONES; 2011, 18, 3; 73-77
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Odporność korozyjno-naprężeniowa i zmęczeniowo-korozyjna okrętowych stopów aluminium i ich spawalność
Corrosion-stress and fatigue-corrosion strenght of marine aluminium alloys and their weladability
Autorzy:: Jurczak, W.
Dudzik, K.
Powiązania:: https://bibliotekanauki.pl/articles/222005.pdf
Data publikacji:: 2012
Wydawca:: Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
Tematy:: odporność korozyjna
korozja naprężeniowa
korozja zmęczeniowa
okrętowe stopy aluminium
spawalność
corrosion resistance
stress corrosion
fatigue corrosion
ship aluminum alloys
weldability
Opis:: W artykule przedstawiono wyniki badań właściwości mechanicznych i odporności korozyjnej dla osiowego rozciągania (korozja naprężeniowa) i zginania obrotowo-giętnego (korozja zmęczeniowa) stopów aluminium serii 5xxx i 7xxx stosowanych na konstrukcje okrętów. W siłach Polskiej Marynarki Wojennej eksploatowano siedem szybkich kutrów torpedowych w całości wykonanych ze stopów serii 5xxx, a obecnie w składzie sił NATO eksploatowana jest polska korweta projektu 240 z nadbudówką wykonaną ze spawalnego stopu 7020. Stopy serii 7xxx mają wysokie właściwości wytrzymałościowe, ale mniejszą odporność korozyjną od stopów 5xxx. Zaprezentowano wyniki badań spawalności tych stopów oraz podano wyniki badań najnowszego stopu 7020M w aspekcie wytrzymałości zmęczeniowej i odporności korozyjnej jako alternatywy dla dotychczas stosowanych stopów aluminium.
The paper presents the results of investigations of mechanical properties and corrosion strength of axial tension (stress corrosion) and rotational-flexural bending (fatigue corrosion) in aluminum alloys, series 5xxx and 7xxx used in ship structures. The Polish Navy used seven fast torpedo boats made exclusively from alloys series 5xxx, and at present one Polish corvette, project 240, with superstructure made from weldable alloy 7020 is operated within the NATO force Alloys series 7xxx have high strength properties but lower corrosion resistance than alloys 5xxx. The paper shows the results of the investigations on weldability of these alloys as well as the results of investigations on the newest alloy 7020M in relation to fatigue strength and corrosion resistance as an alternative for up to now used aluminum alloys.
Źródło:: Zeszyty Naukowe Akademii Marynarki Wojennej; 2012, R. 53 nr 2 (189), 2 (189); 63-76
0860-889X
Pojawia się w:: Zeszyty Naukowe Akademii Marynarki Wojennej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Microscopic examination of AlZn5Mg1 alloy joints welded by FSW and MIG
Autorzy:: Dudzik, K.
Charchalis, A.
Jurczak, W.
Powiązania:: https://bibliotekanauki.pl/articles/247908.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: microscopic examination
aluminium alloys
friction stir welding (FSW)
MIG welding
grain size
Opis:: The article presents the research results of microscopic examination of friction stir welded joint (FSW) alloy AW 7020 (AlZn5Mg1). The joints welded by traditional MIG method of the same aluminium alloy were chosen as reference points. Friction stir welding (FSW) - a new technology can be successfully used for butt welding of sheet metal with different types of aluminium alloys. The parameters of friction stir welding (FSW) and MIG welding used to join metal alloy AlZn5Mg1 (7020) were presented. Welds made using both the FSW and MIG method were checked using X-ray flaw detection and showed no welding defects. In order to determine the structural changes in the bonded joints, the samples were polished and then microetched KELLER reagent. Metallographic examination was carried out using optical microscope Axiovert ZAISS 25. To determine the grain size in the different zones of joints welded by FSW and MIG methods AxioVision 4.8.2 software was used. Metallographic examination revealed the existence of an explicit heat affected zone of HAZ in case of MIG welded joints and virtually lack thereof, in case of FSW welded joints. Microscopic examination of AlZn5Mg1 alloy joints showed that the structure of the FSW welded joint is more homogeneous than the MIG welded joint. The analysis of the grain size of the characteristic zones of joints shows that in the case of joints welded by FSW the weld nugget has smaller grains than the native material. In case of the joint welded by traditional MIG method the biggest grains are in HAZ and the smallest in the native material.
Źródło:: Journal of KONES; 2012, 19, 2; 129-135
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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