Autor: Bolibruchová, D. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of the AlCr20 Addition on the Microstructure of Secondary AlSi7Mg0.3 Alloy
Autorzy:: Bolibruchova, D.
Richtarech, L.
Powiązania:: https://bibliotekanauki.pl/articles/383113.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: secondary AlSi7Mg0.3 alloy
iron based alloys
iron phases
thermal analysis
iron correctors
heat treatment
stop AlSi7Mg0,3
analiza termiczna
obróbka cieplna
żelazo
zanieczyszczenie stopu
Opis:: This paper deals with influence of chrome addition and heat treatment on segregation of iron based phases in the secondary alloy AlSi7Mg0.3 microstructure by chrome and heat treatment. Iron is the most common and harmful impurity in aluminum casting alloys and has long been associated with an increase of casting defects. In generally, iron is associated with the formation of Fe-rich intermetallic phases. It is impossible to remove iron from melt by standard operations, but it is possible to eliminate its negative influence by addition some other elements that affect the segregation of intermetallics in less harmful type or by heat treatment. Realization of experiments and results of analysis show new view on solubility of iron based phases during melt preparation with higher iron content and influence of chrome as iron corrector of iron based phases.
Źródło:: Archives of Foundry Engineering; 2014, 14, 2; 9-12
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of Molybdenum on the Thermal, Structural Properties and Micro Hardness of AlSi10Mg(Cu) Alloy
Autorzy:: Hajduch, P.
Bolibruchova, D.
Djurdjevic, M.
Powiązania:: https://bibliotekanauki.pl/articles/383004.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: alloy AlSiMgCu
influence of molybdenum
thermal analysis
micro hardness
stop AlSiMgCu
wpływ molibdenu
analiza termiczna
mikrotwardość
Opis:: This work is dealing with the impact of molybdenum on the structure properties of commercial cast AlSi10Mg(Cu) alloy. The solidification path of AlSi10Mg(Cu) alloy with various content of molybdenum has been investigated using cooling curve techniques. The samples for testing have been poured into permanent steel mold. The content of molybdenum has been varied from 0 to 0.20 wt. %.The desired chemical composition was achieved by adding of master alloy AlMo10 into commercial AlSi10Mg(Cu) alloy. The micro hardness of as cast alloys with different content of molybdenum has been measured. The microstructure and EDX analysis from the casted samples has been carried out. The results show that molybdenum in commercial AlSi10Cu(Mg) alloy precipitate in the interdendritic region isolated in the form of Al(FeMnMoMg)Si rich intermetallic. The increased content of molybdenum increase slightly liquidus temperature, prolonging precipitation of the last eutectic and surprisingly decrease the micro hardness of commercial alloy for approximately 16 %.
Źródło:: Archives of Foundry Engineering; 2018, 18, 3; 19-24
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Elimination of Negative Effect of Fe in Secondary Alloys AlSi6Cu4 (En Ac 45 000, A 319) by Nickel
Rola Ni w eliminowaniu szkodliwego wpływu faz zawierających Fe w stopach wtórnych AlSi6Cu4 (En Ac 45 000, A 319)
Autorzy:: Bolibruchová, D.
Macko, J.
Brůna, M.
Powiązania:: https://bibliotekanauki.pl/articles/356915.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: iron based phases
thermal analysis
iron based phases correctors
nickel
fazy zawierające żelazo
analiza termiczna
usuwanie żelaza
nikiel
Opis:: Submitted article deals with influence of iron based phases segregation by nickel, which is in literature known as iron based phases corrector. Iron is one of the most common impurities that can be found in Al-Si alloys. It is impossible to remove iron from melt by standard operations, but it is possible to eliminate iron negative effects by addition of other elements, that enables segregation of iron in form of intermetallics with less harmful effect. For melt treatment was selected an exact alloy with requested iron content - master alloy AlNi20. Influence of nickel was evaluated quantitatively by chemical analysis (solubility), thermal analysis and microstructure evaluation. Experimental results analysis shows a new view on solubility of iron based phases during melt preparation and treatment with higher iron content and also nickel effect as iron corrector of iron based phases. It can be concluded that nickel did not influenced iron based phases (β-phases), it does not change their type into more favorable form. As an initial impulse for starting this work was insufficient theoretical knowledge of usage secondary alloys Al-Si-Cu with higher iron content and its appropriate elimination in process of castings production for automotive industry. Increased iron content in alloys causes segregation of iron phases in various shapes and types during solidification, which subsequently affects quality, soundness and lifetime of castings. Because of increased demands for casting quality, final mechanical properties and effort to reduce costs, it is necessary to look for compromises in casting production from secondary alloys with occurrence of various impurities.
Artykuł opisuje wpływ dodatku niklu| do stopów wtórnych Al-Si-Cu na segregację faz zawierających żelazo, które jest jednym z najpowszechniej występujących zanieczyszczeń w tych stopach. Powszechnie wiadomo, iż nie jest możliwe usunięcie żelaza z kąpieli metalowej, natomiast można ograniczać negatywny jego wpływ poprzez związanie żelaza w fazach między- metalicznych mniej szkodliwych niż fazy β Fe, np. w następstwie dodatku innych pierwiastków. W badaniach do obróbki kąpieli zastosowano zaprawę AlNi20 z dokładnie określoną zawartością żelaza. Oddziały wanie niklu na skład i morfologię faz żelazowych określano na drodze analizy chemicznej (badania rozpuszczalności), analizy termicznej i oceny struktury. Na podstawie wyników badań stwierdzono, iż w badanych stopach nikiel nie wywiera wpływu na zmianę składu fazy β Fe, nie zmienia również kształtu jej wydzieleń do postaci bardziej korzystnej z punktu widzenia wpływu na właściwości.
Źródło:: Archives of Metallurgy and Materials; 2014, 59, 2; 717-721
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Influence of Nickel Addition on Properties of Secondary AlSi7Mg0.3 Alloy
Autorzy:: Richtárech, L.
Bolibruchová, D.
Brůna, M.
Caiss, J.
Powiązania:: https://bibliotekanauki.pl/articles/379900.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: secondary AlSi7Mg0.3 alloy
iron phases
thermal analysis
iron correctors
stop AlSi7Mg0,3
faza żelazowa
analiza termiczna
usuwanie żelaza
Opis:: This paper deals with influence on segregation of iron based phases on the secondary alloy AlSi7Mg0.3 microstructure by nickel. Iron is the most common and harmful impurity in aluminum casting alloys and has long been associated with an increase of casting defects. In generally, iron is associated with the formation of Fe-rich intermetallic phases. It is impossible to remove iron from melt by standard operations. Some elements eliminates iron by changing iron intermetallic phase morphology, decreasing its extent and by improving alloy properties. Realization of experiments and results of analysis show new view on solubility of iron based phases during melt preparation with higher iron content and influence of nickel as iron corrector of iron based phases.
Źródło:: Archives of Foundry Engineering; 2015, 15, 2; 95-98
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Study of AlSi9Cu3 Alloy Crystallization Process with Increased Iron Content at Different Number of Remelts
Autorzy:: Matejka, M.
Bolibruchova, D.
Kasińska, J.
Kuriš, M.
Powiązania:: https://bibliotekanauki.pl/articles/380082.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Al-Si-Cu
remelting
thermal analysis
structural analysis
przetapianie
analiza termiczna
analiza strukturalna
Opis:: Monitoring the solidification process is of great importance for understanding the quality of the melt, for controlling it, and for predicting the true properties of the alloy. Solidification is accompanied by the development of heat, the magnitude of which depends on the different phases occurring during solidification. Thermal analysis is now an important part of and tool for quality control, especially when using secondary aluminium alloys in the automotive industry. The effect of remelting on the change of crystallization of individual structural components of experimental AlSi9Cu3 alloy was determined by evaluation of cooling curves and their first derivatives. Structural analysis was evaluated using a scanning electron microscope. The effect of remelting was manifested especially in nucleation of phases rich in iron and copper. An increasing number of remelts had a negative effect after the fourth remelting, when harmful iron phases appeared in the structure in much larger dimensions.
Źródło:: Archives of Foundry Engineering; 2020, 20, 1; 79-83
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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