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نویسندگان مقالات پربازدید :
مواد و طراحی
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • design and characterization of new cu alloys to substitute cu–25%ni for coinage applications

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 383
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     as the material and manufacturing cost of coins approached or even exceeded the face value of coins over the last 10 years, the needs to develop less-expensive alloys to replace the current coinage materials increased. the objective of this study is to develop new cost-effective alloys with the same vending machine acceptability and similar color tone as cu–25%ni coins. cu–zn–ni–fe and cu–zn–ni–fe–cr alloys developed in this study were found to have the electrical conductivity close to and color similar to that of cu–25ni. the strengths of the annealed cu–25.5%zn–12%ni–1.5%fe and cu–25.5%zn–12%ni–1.5%fe–0.28%cr alloys were observed to be 451 mpa and 512 mpa, respectively, with excellent ductility, suggesting that these alloys could be substitutive to cu–25%ni alloy for other general structural applications as well as coinage application. both alloys exhibited the typical ductile fracture surfaces. cu–zn–ni–fe alloy was found to be a better candidate for coins because of the better formability and machinability associated with its moderate strength and excellent ductility.

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