Studies Regarding the Die Pressing Parameters on the Press Ability of Cementite Powders in Order to Obtained Sintered Steels

Mariana Ciobanu; Claudiu Nicolicescu; Stefan Radu; Iulian Ştefan

doi:10.4028/www.scientific.net/AMR.1128.64

Paper Titles

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Direct Carburization of Tungsten Trioxide by Mechanical Alloying
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Effects of Vibration and Salts Treatments on Aluminium Alloy Properties Used in Mould Manufacture
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Studies Regarding the Die Pressing Parameters on the Press Ability of Cementite Powders in Order to Obtained Sintered Steels
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Graphite Phase Characteristics in Compacted/Vermicular Graphite Cast Iron Inoculated in the Mould
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Studies on the Influence of Sintering Parameters on the Hardness and Impact Energy of Some Sintered Steels Alloyed with Copper Powders
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Structures of Aluminum Base Alloys Solidified by Vibrations
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1128Studies Regarding the Die Pressing Parameters on...

Studies Regarding the Die Pressing Parameters on the Press Ability of Cementite Powders in Order to Obtained Sintered Steels

Abstract:

This paper presents the experimental results of the effects of the pressing speed on the press ability of the cementite powders alloyed with iron powders, in order to obtain sintered steels. Cementite or iron carbide is a chemical compound with Fe₃C formula having orthorhombic crystal structure. Regarding mechanical properties, cementite is hard and brittle being important in the metallurgical processes. For the research process was used a mixture consists by cementite and iron powders (6,75%Fe₃C+93.25%Fe) which was obtained by mechanical alloying technique for 30 hours. The cementite powders were produced by direct carburizing of Fe powders. The mixture was unilateral die pressing at three pressures 200, 400 and 600 MPa respectively 5 pressing speeds 10 up to 50 mm/min. The green billets were sintered in argon atmosphere and were studied by microstructural point of view. The evolution of microhardness function the pressing parameters was studied too.

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Periodical:

Advanced Materials Research (Volume 1128)

Pages:

64-71

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1128.64

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Online since:

October 2015

Authors:

Mariana Ciobanu*, Claudiu Nicolicescu, Stefan Radu, Iulian Ştefan

Keywords:

Carburizing, Die Pressing, Sintered Steels

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