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Nickel and Copper-Free Sintered Structural Steels Containing Mn, Cr, Si, and Mo Developed for High Performance Applications

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Języki publikacji
EN
Abstrakty
EN
In an attempt to study the sinterability of potential high-strength nickel-free sintered structural steels containing Mn, Cr, Si and Mo compacts were prepared based on sponge and water atomised iron powders and on Astaloy prealloyed powders. To these were admixed ferromanganese, ferroslicon, and graphite. The samples were sintered at temperatures 1120 and 1250°C in laboratory tube furnaces in hydrogen, hydrogen-nitrogen atmospheres with dew points better than –60°C or in nitrogen in a semiclosed container in a local microatmosphere. After sintering the samples were slowly cooled or sinterhardened. Generally resultant microstructures were inhomogeneous, consisted of pearlite/ bainite/martensite, but were characterised by an absence of oxide networks. Sintering studies performed over a range of compositions have shown that superior strength, ranging beyond 900 MPa, along with reasonable tensile elongation, can be achieved with these new steels.
Twórcy
autor
  • AGH-UST, University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland
autor
  • Institute of Metals Science, Equipment and Technologies, Bulgarian Academy of Sciences, Sofia 157467 “Shipchenski Prohod” Str., Bulgaria
Bibliografia
  • [1] EU Carcinogen Directive 2004/37/EC of 29 April 2004 – carcinogens or mutagens at work.
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  • [22] A. Ciaś: Development and properties of Fe-Mn-(Mo)-(Cr)-C sintered structural steels, ISSN0867-6631, 129, AGH - UWNT, Kraków 2004.
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Uwagi
EN
This work was sponsored by the Polish Ministry of Science and Higher Education under Contract no. 11.11.110.299. Appreciation is also expressed to Prof. A. S. Wronski for his advise and comments, as well as editing the manuscript.
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-74c3dda6-25ff-4efe-8b61-a9149fabc21c
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