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Vroča preoblikovalnost nerjavnih duplex-jekel = The hot workability of duplex stainless steelsArzenšek, Boris ...Vroča predelava nerjavnih duplex-jekel je precej kompleksnejša v primerjavi z večino avstenitnih in feritnih nerjavnih jekel. Vzrok je v njihovi dvofazni mikrostrukturi alfa/gama, ki imata različno ... trdnost in različne preoblikovalne sposobnosti v vročem stanju. Razmerje alfa/gama faze se povečuje z višanjem temperature vroče predelave. Pri nepravilnem postopku preoblikovanja v vročem je jeklo izpostavljeno vroči pokljivosti. Iz omenjenega razloga je podrobno poznanje preoblikovalnosti duplex nerjavnih jekel pri visokih temperaturah izredno pomembno. Raziskava obsega ugotavljanje preoblikovalnih sposobnosti duplex-jekla, preskuse vročega valjanja in metalografsko analizo jekla preskusnih vzorcev s ciljem določiti temperaturne in mehanske parametre vroče predelave jekla. V tem delu smo z nateznim preskusom in metalografskimi preiskavami ugotavljali preoblikovalne sposobnosti jekla W.Nr.1.4462 (SAF 2205) v temperaturnem območju od 800 [kompozitum]C do 1200 [kompozitum]C. Ugotovili smo, da je jeklo zelo dobro preoblikovalno v temperaturnem območju med 950 [kompozitum]C do 1100 [kompozitum]C, pri temperaturi 800 [kompozitum]C pa zelo slabo. V hladnem stanju je mikrostruktura jekla sestavljena iz ferita+avstenita. Pri temperaturi 1100 [kompozitum]C je v mikrostrukturi jekla nekaj več kot polovica ferita, drugo pa je avstenit.Type of material - conference contributionPublish date - 2004Language - slovenianCOBISS.SI-ID - 384426
Author
Arzenšek, Boris |
Tehovnik, Franc |
Kmetič, Dimitrij |
Lipovšek, Nataša |
Pirnar, Boštjan, 1968- |
Kosmač, Alenka |
Lagoja, Aleš
Topics
jekla |
nerjavna jekla |
vroče valjanje |
metalografija |
steels |
stainless steels |
hot-deformation procedure |
metallography
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Arzenšek, Boris | 08236 |
Tehovnik, Franc | 08001 |
Kmetič, Dimitrij | 04982 |
Lipovšek, Nataša | 17199 |
Pirnar, Boštjan, 1968- | 19959 |
Kosmač, Alenka | 19955 |
Lagoja, Aleš | 02783 |
Source: Personal bibliographies
and: SICRIS
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