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Wyszukujesz frazę "alloy Cu-Sn" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Analysis of Temperature Field, Heat and Fluid Flow of Two-Phase Zone Continuous Casting Cu–Sn Alloy Wire
    Autorzy:
    Luo, J.
    Liu, X.
    Wang, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/380230.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    continuous casting
    two-phase zone continuous casting
    alloy Cu-Sn
    numerical simulation
    temperature field
    heat flow
    fluid flow
    odlewanie ciągłe
    strefa odlewania dwufazowego
    stop Cu-Sn
    symulacja numeryczna
    pole temperatury
    przepływ ciepła
    przepływ płynu
    Opis:
    Cu–4.7 wt. % Sn alloy wire with Ø10 mm was prepared by two-phase zone continuous casting technology, and the temperature field, heat and fluid flow were investigated by the numerical simulated method. As the melting temperature, mold temperature, continuous casting speed and cooling water temperature is 1200°C, 1040°C, 20 mm/min and 18°C, respectively, the alloy temperature in the mold is in the range of 720°C–1081°C, and the solid/liquid interface is in the mold. In the center of the mold, the heat flow direction is vertically downward. At the upper wall of the mold, the heat flow direction is obliquely downward and deflects toward the mold, and at the lower wall of the mold, the heat flow deflects toward the alloy. There is a complex circular flow in the mold. Liquid alloy flows downward along the wall of the mold and flows upward in the center.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 1; 33-40
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Hardness of Cu-22Sn-xC Alloys Fabricated by Powder Metallurgy
    Autorzy:
    Kim, Gwanghun
    Park, Jungbin
    Lee, Seok-Jae
    Kim, Hee-Soo
    Powiązania:
    https://bibliotekanauki.pl/articles/2203705.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Cu-Sn alloy
    nanocrystalline
    carbon solubility
    mechanical alloying
    Opis:
    Cu-Sn alloys have been known as bronze since ancient times and widely used as electrode materials, ornaments, tableware and musical instruments. Cu-22Sn alloy fabrication by hot forging process is a Korean traditional forged high-tin bronze. The tin content is 22 percent, which is more than twice that of bronze ware traditionally used in China and the West. Copper and tin have a carbon solubility of several ppm at room temperature, making Cu-Sn-C alloys difficult to manufacture by conventional casting methods. Research on the production of carbon-added copper alloys has used a manufacturing method that is different from the conventional casting method. In this study, Cu-22Sn-xC alloy was fabricated by mechanical alloying and spark plasma sintering. The carbon solubility was confirmed in Cu-Sn alloy through mechanical alloying. The lattice parameter increased from A0 to C2, and then decreased from C4. The microstructural characteristics of sintered alloys were determined using X-ray diffraction and microscopic analysis. As a result of comparing the hardness of Cu-22Sn alloys manufactured by conventional rolling, casting, and forging and Cu-22Sn-xC alloy by sintered powder metallugy, B0 sintered alloy was the highest at about 110.9 HRB.
    Źródło:
    Archives of Metallurgy and Materials; 2023, 68, 1; 71--75
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sintering Behavior and Mechanical Property of Cu-Sn Alloy with Ag Addition Produced by Pulsed Electric Current Sintering
    Autorzy:
    Lee, Se Hwan
    Ahn, Byungmin
    Powiązania:
    https://bibliotekanauki.pl/articles/2174574.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    powder metallurgy
    Cu-Sn alloy
    pulsed electric current sintering
    grinding tool
    Opis:
    This work mainly focuses on the sintering behavior of the Cu-Sn alloy with the addition of Ag up to 4 wt% after pulsed electric current sintering (PECS) process for ultra-fast sintering. The microstructural evolution was characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and density measurements. The mechanical properties were evaluated via measurements of transverse rupture strength (TRS) and Rockwell hardness. The mechanism during the sintering process has been discussed thoroughly, and the effect on porosity with the addition of the Ag is also correlated. The results showed that the growth of porosity progressed with the amount of Ag up to 2 wt%, and further addition of Ag leads reduction in porosity. The effect on mechanical properties were improved slowly as the amount of Ag increased.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 4; 1475--1479
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of Microstructural and Mechanical Properties after Cold Rolling of an Electro-Sinter-Forged Cu-Sn Alloy
    Autorzy:
    Gobber, F. S.
    Bidulská, J.
    Fais, A.
    Franchini, F.
    Bidulský, R.
    Kvačkaj, T.
    Actis Grande, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/352541.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Electro-Sinter-Forging
    powder metallurgy
    CuSn15
    rolling
    Opis:
    Traditional press and sinter processes have gained in the last decades more and more importance in the manufacturing of high volume and precise mechanical components especially in the field of iron based powders. In recent years, the reductions of processing times and temperatures were spotted as critical targets to increase productivity and reduce energy consumption. Electric current assisted sintering (ECAS) technologies have always been seen as an alternative to traditional furnace based sintering techniques and have been the target of different researches with the specific purpose of reducing both operational times and costs. The aim of the present study is to investigate the effect of an innovative process called Electro Sinter Forging (ESF) applied to CuSn15 powders. Thanks to a very short processing time (less than 1 second to densify loose powders), this process is able to retain a very small grain size, thus enhancing mechanical properties of the processed materials. Furthermore, to the authors knowledge, cold – rolled electro – sinter – forged alloys has never been investigated before. First of all, bars were electro – sinter – forged and subsequently characterized in the as sinter – forged condition. The observation of microstructure evidenced an extremely fine microstructure and a reduced degree of porosity. Afterwards, bars were cold rolled after different reduction ratios; macrostructural integrity of the rolled bars was assessed before evaluating the effects of cold rolling on the sinter – forged microstructure.
    Źródło:
    Archives of Metallurgy and Materials; 2020, 65, 2; 787-792
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Impact of Nickel Additions on Tin Bronzes
    Autorzy:
    Kozana, J.
    Garbacz-Klempka, A.
    Piękoś, M.
    Czekaj, J.
    Perek-Nowak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/382525.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wear resistant alloys
    tin bronze
    microstructure
    alloy additives
    Cu–Sn–Ni alloy
    stopy odporne na zużycie
    brąz cynowy
    mikrostruktura
    dodatki stopowe
    stop Cu-Sn-Ni
    Opis:
    High prices of tin and its limited resources, as well as several valuable properties characterising Cu-Sn alloys, cause searching for materials of similar or better properties at lower production costs. The influence of various nickel additions to CuSn10 casting bronze and to CuSn8 bronze of a decreased tin content was tested. Investigations comprised melting processes and casting of tin bronzes containing various nickel additions (up to 5%). The applied variable conditions of solidification and cooling of castings (metal and ceramic moulds) allowed to assess these alloys sensitivity in forming macro and microstructures. In order to determine the direction of changes in the analysed Cu-Sn-Ni alloys, the metallographic and strength tests were performed. In addition, the solidification character was analysed on the basis of the thermal analysis tests. The obtained results indicated the influence of nickel in the solidification and cooling ways of the analysed alloys (significantly increased temperatures of the solidification beginning along with increased nickel fractions in Cu-Sn alloys) as well as in the microstructure pattern (clearly visible grain size changes). The hardness and tensile strength values were also changed. It was found, that decreasing of the tin content in the analysed bronzes to which approximately 3% of nickel was added, was possible, while maintaining the same ultimate tensile strength (UTS) and hardness (HB) and improved plasticity (A5).
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 1; 53-60
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Densification Process and Structure of PM Al-Mg-Si-Cu-Fe and Al-Zn-Mg-Cu-Sn Alloys
    Analiza procesu zagęszczania i struktury spiekanych stopów Al-Mg-Si-Cu-Fe i Al-Zn-Mg-Cu-Sn
    Autorzy:
    Bidulský, R
    Bidulská, J.
    Actis Grande, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/355248.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    powder metallurgy
    aluminium alloy
    compressibility
    microstructure
    metalurgia proszków
    stop aluminium
    ściśliwość
    mikrostruktura
    Opis:
    The paper is focused on the role of the pressing pressure on the densification behaviour of PM aluminium alloys. Commercially aluminium based powders Al-Mg-Si-Cu-Fe and Al-Zn-Mg-Cu-Sn were used as materials to be investigated. The apparent density of the powder mixes was determined according to MPIF St. 04. A set of cylinder test specimen 55x10x10 mm3 was uniaxially pressed in a floating hardened steel die. Compaction pressures ranged from 50 MPa up to 700 MPa. Considering the densification of metal powders in uniaxial compaction, quantification of aluminium compaction behaviour was performed. The compressibility behaviour was evaluated, considering the effect on specimens, as well as on their microstructure. The development of compressibility values with pressing pressure enables to characterize the effect of particles geometry and matrix plasticity on the compaction process.
    Przedmiotem pracy jest wpływ ciśnienia prasowania na zagęszczanie proszków stopów aluminium. Materiałem badanym były komercyjne proszki aluminium Al-Mg-Si-Cu-Fe I Al-Zn-Mg-Cu-Sn. Gęstość pozorna mieszanek proszków określono według MPIF St.04. Cylindryczne próbki 55x10x10 mm3 ściskane były jednokierunkowo w samonastawnej matrycy z hartowanej stali. Nacisk wahał się od 50 MPa do 700 MPa. Biorąc pod uwagę zagęszczenie proszków metali w trakcie prasowania jednoosiowego, przeprowadzono kwantyfikacje zagęszczania aluminium. Oceniono zachowanie ściśliwości biorąc pod uwagę wpływ na próbki, jak również na ich mikrostrukturę. Zestawienie wartości ściśliwości z ciśnieniem prasowania pozwala scharakteryzować wpływ geometrii cząstek i plastyczności matrycy na proces prasowania.
    Źródło:
    Archives of Metallurgy and Materials; 2014, 59, 1; 17-23
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Study on the Melting Temperature, Microstructural and Improved Mechanical Properties of Sn58Bi/Cu Solder Alloy Reinforced with 1%, 2% and 3% Zirconia (ZrO2) Nanoparticles
    Autorzy:
    Amares, S.
    Durairaj, R.
    Kuan, S. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2049682.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    SnBi solder
    low melting temperature
    microstructure
    hardness
    shear load
    Opis:
    This paper investigates the influence of 1%, 2% and 3% zirconia (ZrO2) nanoparticles to the melting, microstructural and mechanical properties of the Sn58Bi solder. Melting temperatures of 145.11°C, 140.89°C and 143.84°C were attained correspondingly for the 1%, 2% and 3% ZrO2 reinforced Sn58Bi solder. The microstructures especially the spacing between the lamellar structures of the Sn58Bi solder alloy was narrower for 1% ZrO2 added with Sn58Bi solder alloy. The highest and lowest hardness value of 32.28 HV and 27.62 HV was recorded for 1% and 2% ZrO2 additions respectively. Highest shear strength value was noted for the 3% ZrO2 added SnBi/Copper joint with 0.8712 kN, while the lowest value of 0.4380 kN noted for the 1% ZrO2 added SnBi/Copper joint. The presence of small-sized ZrO2 nanoparticles can be seen to be properly dispersed at the solder joint to increase the shear load at maximum joint stress.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 2; 407-418
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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