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

• Autorzy: Cias A. , Stoytchev M.

Identyfikatory

DOI

10.1515/amm-2017-0002

• 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.

Słowa kluczowe

EN

sintered steels; alloying elements; sintering atmosphere

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 1
• Strony: 11--17
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Cias A.

• AGH-UST, University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Stoytchev M.

• Institute of Metals Science, Equipment and Technologies, Bulgarian Academy of Sciences, Sofia 157467 “Shipchenski Prohod” Str., Bulgaria

Bibliografia

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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).