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Statements

Subject Item
n2:RIV%2F25877950%3A_____%2F11%3A%230000028%21RIV13-MPO-25877950
rdf:type
skos:Concept n11:Vysledek
rdfs:seeAlso
http://www.metal2012.com/files/proceedings/metal_11/lists/papers/1053.pdf
dcterms:description
Design of technology for production of new material involves many research and development activities. The presented work is part of the proposal of chemical composition and technology for production of high alloyed steel. The proposal is realized with respect to the subsequent possibilities of material forming and to the requirements of potential customers. Specifically the steels with austenitic and ferritic structure, so called super-duplex stainless steels (SDSS) are studied. SDSS are more resistant to corrosion than austenitic steels. The proposal of production of ingot from the steel grade 1.4477 was prepared, followed by verification in the company MATERIAL & METALLURGICAL RESEARCH Ltd. (MMR). The ingot was then forged in conformity with the proposal at VÍTKOVICE HEAVY MACHINERY (VHM) into three rods. The forged rods with diameters of 250, 300 and especially 150 mm were after heat treatment subjected to mechanical tests. They were evaluated by hardness test, tensile strength and Charpy impact test to determine the transit temperature. Material was subjected to physical simulation of forming on the research facility Setaram for determination of the plastic properties important for the forging. Material was further subjected to tests of resistance to corrosion under effect of chloride ions and resistance to inter-crystalline corrosion. The research included also proposal of production of the second super-duplex stainless steel grade 1.4501 with verification of production of ingot in conditions of the company MMR. Both above mentioned steel grades contain high proportion of nitrogen, which significantly influences the structural, mechanical and corrosion properties. This influence was proved during the evaluation of the grade 1.4477 and obtained results are described in this paper. The work contains also findings from the bibliographic analysis of heat treatment of the SDSS as an important final operation of processing of this material. Design of technology for production of new material involves many research and development activities. The presented work is part of the proposal of chemical composition and technology for production of high alloyed steel. The proposal is realized with respect to the subsequent possibilities of material forming and to the requirements of potential customers. Specifically the steels with austenitic and ferritic structure, so called super-duplex stainless steels (SDSS) are studied. SDSS are more resistant to corrosion than austenitic steels. The proposal of production of ingot from the steel grade 1.4477 was prepared, followed by verification in the company MATERIAL & METALLURGICAL RESEARCH Ltd. (MMR). The ingot was then forged in conformity with the proposal at VÍTKOVICE HEAVY MACHINERY (VHM) into three rods. The forged rods with diameters of 250, 300 and especially 150 mm were after heat treatment subjected to mechanical tests. They were evaluated by hardness test, tensile strength and Charpy impact test to determine the transit temperature. Material was subjected to physical simulation of forming on the research facility Setaram for determination of the plastic properties important for the forging. Material was further subjected to tests of resistance to corrosion under effect of chloride ions and resistance to inter-crystalline corrosion. The research included also proposal of production of the second super-duplex stainless steel grade 1.4501 with verification of production of ingot in conditions of the company MMR. Both above mentioned steel grades contain high proportion of nitrogen, which significantly influences the structural, mechanical and corrosion properties. This influence was proved during the evaluation of the grade 1.4477 and obtained results are described in this paper. The work contains also findings from the bibliographic analysis of heat treatment of the SDSS as an important final operation of processing of this material.
dcterms:title
Evaluation of production and properties of the forged bar made of super-duplex austenitic-feritic steel Evaluation of production and properties of the forged bar made of super-duplex austenitic-feritic steel
skos:prefLabel
Evaluation of production and properties of the forged bar made of super-duplex austenitic-feritic steel Evaluation of production and properties of the forged bar made of super-duplex austenitic-feritic steel
skos:notation
RIV/25877950:_____/11:#0000028!RIV13-MPO-25877950
n11:predkladatel
n15:ico%3A25877950
n4:aktivita
n20:P
n4:aktivity
P(FR-TI1/351)
n4:dodaniDat
n7:2013
n4:domaciTvurceVysledku
n9:2559315
n4:druhVysledku
n13:D
n4:duvernostUdaju
n21:S
n4:entitaPredkladatele
n19:predkladatel
n4:idSjednocenehoVysledku
198341
n4:idVysledku
RIV/25877950:_____/11:#0000028
n4:jazykVysledku
n16:eng
n4:klicovaSlova
super duplex steel; production technology; corrosion; forging; forged bar
n4:klicoveSlovo
n8:forged%20bar n8:forging n8:corrosion n8:super%20duplex%20steel n8:production%20technology
n4:kontrolniKodProRIV
[4004A5D742F4]
n4:mistoKonaniAkce
Brno
n4:mistoVydani
Ostrava
n4:nazevZdroje
METAL 2011: 20th Anniversary International Conference Metallurgy and Materials
n4:obor
n6:JG
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
4
n4:projekt
n12:FR-TI1%2F351
n4:rokUplatneniVysledku
n7:2011
n4:tvurceVysledku
Unucka, P. Michalek, K. Machovčák, Pavel Kurka, V.
n4:typAkce
n10:WRD
n4:wos
000302746700026
n4:zahajeniAkce
2011-05-18+02:00
s:numberOfPages
7
n14:hasPublisher
TANGER spol. s r.o.
n18:isbn
978-80-87294-24-6