Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "stopy aluminum" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-5 z 5
    Tytuł:
    Effect Of The T6 Heat Treatment On Change Of Mechanical Properties Of The AlSi12CuNiMg Alloy Modified With Strontium
    Wpływ obróbki cieplnej T6 na zmianę właściwości mechanicznych stopu AlSi12CuNiMg modyfikowanego strontem
    Autorzy:
    Pezda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/355605.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloys
    heat treatment
    mechanical properties
    stopy aluminium
    obróbka cieplna
    właściwości mechaniczne
    Opis:
    The paper presents test results concerning an effect of the heat treatment on microstructure and mechanical properties of eutectic EN AC-AlSi12CuNiMg (EN AC-48000) alloy according to the EN 1706:2010 (tensile strength – Rm, hardness – HB 10/1000/30) modified with strontium. Solution heat treatment and ageing treatment temperature ranges were selected on base of heating (melting) curves recorded with use of the ATD method. Temperatures of the solution heat treatment were 500, 520, and 535°C ±5°C, while the solution time ranged from 0.5 to 3 h (0.5; 1.5 and 3 h). Temperature of the solution heat treatment amounted to 180, 235 and 310°C, while the ageing time ranged from 2 to 8 h (2, 5 and 8 h). Obtained results have enabled determination of optimal parameters of the T6 heat treatment in aspect of improvement of tensile strength Rm and hardness HB of the alloy, with reduced time of individual treatments and determination of mathematical relationships enabling prediction of these mechanical properties.
    W pracy przedstawiono wyniki badań dotyczące wpływu obróbki cieplnej na właściwości mechaniczne (wytrzymałość na rozciąganie – Rm, twardość – HB 10/1000/30) i mikrostrukturę eutektycznego stopu EN AC-AlSi12CuNiMg (EN AC-48000) zgodnie z PN-EN 1706:2011 modyfikowanego strontem. Zakresy temperatur zabiegów przesycania i starzenia zostały dobrane w oparciu o krzywe nagrzewania (topienia) zarejestrowane metodą ATD. Temperatury przesycania wynosiły 500, 520 i 535°C ± 5°C, a czas przesycania mieścił się w zakresie od 0.5 do 3 godzin (0.5; 1.5 i 3 h). Temperatura starzenia wynosiła 180, 235 i 310°C. Czas przesycania mieścił się w zakresie od 2 do 8 godzin (2, 5 i 8 h). Uzyskane wyniki pozwoliły na określenie optymalnych parametrów obróbki cieplnej T6 w aspekcie poprawy wytrzymałości na rozciąganie Rm i twardości HB stopu, przy ograniczeniu czasu poszczególnych zabiegów oraz wyznaczenie zależności matematycznych umożliwiających predykcje tych właściwości mechanicznych.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2A; 627-632
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of the TVDA Method to Assessment of EN AC-AlSi9Mg Alloy Hardness Moulded in Metal Moulds
    Autorzy:
    Pezda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381615.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aluminum alloys
    crystallization
    hardness
    regression analysis
    stopy aluminium
    krystalizacja
    twardość
    analiza regresji
    Opis:
    Mechanical properties of aluminum-silicon alloys are defined by condition of alloying components in the structure, i.e. plastic metallic matrix created from solid solution &alpha on the basis of Al, as well as hard and brittle precipitations of silicon. Size and distribution of silicon crystals are the main factors having effect on field of practical applications of such alloys. Registration of crystallization processes of the alloys on stage of their preparation is directly connected with practical implementation of crystallization theory to controlling technological processes, enabling obtainment of suitable structure of the material and determining its usage for specific requirements. An attempt to evaluate correlation between values of characteristic points laying on crystallization curves and recorded with use of developed by the author TVDA method (commonly denominated as ATND method) is presented in the paper together with assessment of hardness of tested alloy. Basing on characteristic points from the TVDA method, hardness of EN AC-AlSi9Mg alloy modified with strontium has been described in the paper in a significant way by the first order polynomial.
    Źródło:
    Archives of Foundry Engineering; 2019, 1; 25-28
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Different Variants of Heat Treatment on Mechanical Properties of the AlSi17CuNiMg Alloy
    Autorzy:
    Jarko, A.
    Pezda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381243.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heat treatment
    homogenizing
    aluminum alloys
    mechanical properties
    elongation
    silumin
    obróbka cieplna
    homogenizacja
    stopy aluminium
    właściwości mechaniczne
    Opis:
    Dispersion hardening, as the main heat treatment of silumins having additions of copper and magnesium, results in considerable increase of tensile strength and hardness, with simultaneous decrease of ductility of the alloy. In the paper is presented an attempt of introduction of heat treatment operation consisting in homogenizing treatment prior operation of the dispersion hardening, to minimize negative effects of the T6 heat treatment on plastic properties of hypereutectoidal AlSi17CuNiMg alloy. Tests of the mechanical properties were performed on a test pieces poured in standardized metal moulds. Parameters of different variants of the heat treatment, i.e. temperature and time of soaking for individual operations were selected basing on the ATD (Thermal Derivation Analysis) diagram and analysis of literature. The homogenizing treatment significantly improves ductility of the alloy, resulting in a threefold increase of the elongation and more than fourfold increase of the impact strength in comparison with initial state of the alloy. Moreover, the hardness and the tensile strength (Rm) of the alloy decrease considerably. On the other hand, combination of the homogenizing and dispersion hardening enables increase of elongation with about 40%, and increase of the impact strength with about 25%, comparing with these values after the T6 treatment, maintaining high hardness and slight increase of the tensile strength, comparing with the alloy after the dispersion hardening.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 41-44
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heat Treatment of a Casting Element of a Through Clamp to Suspension of Electric Cables on Line Post Insulators
    Autorzy:
    Pezda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/379668.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heat treatment
    aluminum alloys
    ATD
    tensile strength
    hardness HB
    obróbka cieplna
    stopy aluminium
    wytrzymałość na rozciąganie
    twardość
    Opis:
    Heat treatment of a casting elements poured from silumins belongs to technological processes aimed mainly at change of their mechanical properties in solid state, inducing predetermined structural changes, which are based on precipitation processes (structural strengthening of the material), being a derivative of temperature and duration of solutioning and ageing operations. The subject-matter of this paper is the issue concerning implementation of a heat treatment process, basing on selection of dispersion hardening parameters to assure improvement of technological quality in terms of mechanical properties of a clamping element of energy network suspension, poured from hypoeutectic silumin of the LM25 brand; performed on the basis of experimental research program with use of the ATD method, serving to determination of temperature range of solutioning and ageing treatments. The heat treatment performed in laboratory conditions on a component of energy network suspension has enabled increase of the tensile strength Rm and the hardness HB with about 60-70% comparing to the casting without the heat treatment, when the casting was solutioned at temperature 520 oC for 1 hour and aged at temperature 165 oC during 3 hours.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 3; 89-94
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Heat Treatment on Machining Properties of the AlSi9Cu3(Fe) Alloy
    Autorzy:
    Wieroński, W.
    Pezda, J.
    Ponikwia, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/379474.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    silumin
    heat treatment
    machinability
    refining
    mechanical properties
    cutting power
    aluminum alloys
    obróbka cieplna
    obróbka mechaniczna
    rafinacja
    właściwości mechaniczne
    cięcie
    stopy aluminium
    Opis:
    Automation of machining operations, being result of mass volume production of components, imposes more restrictive requirements concerning mechanical properties of starting materials, inclusive of machinability mainly. In stage of preparation of material, the machinability is influenced by such factors as chemical composition, structure, mechanical properties, plastic working and heat treatment, as well as a factors present during machining operations, as machining type, cutting parameters, material and geometry of cutting tools, stiffness of the system: workpiece – machine tool – fixture and cutting tool. In the paper are presented investigations concerning machinability of the EN AC-AlSi9Cu3(Fe) silumin put to refining, modification and heat treatment. As the parameter to describe starting condition of the alloy was used its tensile strength Rm. Measurement of the machining properties of the investigated alloy was performed using a reboring method with measurement of cutting force, cutting torque and cutting power. It has been determined an effect of the starting condition of the alloy on its machining properties in terms of the cutting power, being indication of machinability of the investigated alloy. The best machining properties (minimal cutting power - Pc=48,3W) were obtained for the refined alloy, without heat treatment, for which the tensile strength Rm=250 MPa. The worst machinability (maximal cutting power Pc=89,0W) was obtained for the alloy after refining, solutioning at temperature 510 oC for 1,5 hour and aged for 5 hours at temperature 175 oC. A further investigations should be connected with selection of optimal parameters of solutioning and ageing treatments, and with their effect on the starting condition of the alloy in terms of improvement of both mechanical properties of the alloy and its machining properties, taking into consideration obtained surface roughness.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 3; 137-140
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies