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Vroča preoblikovalnost avstenitnega nerjavnega jekla s strjevalno mikrostrukturo = Hot ductility of austenite stainless steel with a solidification microstructureTehovnik, Franc ...Strjevanje avstenitnih nerjavnih jekel se začne v odvisnosti od vsebnosti glavnih legirnih elementov, s primarno kristalizacijo [delta]-ferita ali avstenita. V primeru primarnega nastanka ... [delta]-ferita nastane pri nadaljevanju strjevanja s peritektično reakcijo med trdno fazo in preostalo talino avstenit. Vroča preoblikovalnost jekla s strjevalno mikrostrukturo je boljša pri primarni kristalizaciji [delta]-ferita, ker ta prepreči koncentracijo nečistoč v jeklu v zadnji meddendritni talini. Nekatere nečistoče, ki so netopne ali malo topne v trdni fazi pri kristalizaciji, npr. svinec, močno zmanjšajo vročo preoblikovalnost jekla s strjevalno mikrostrukturo, ki se zmanjša tudi zaradi gregacij topnih nečistoč na meji med avstenitom in [delta]-feritom. Nečistoče, kot so žveplo, fosfor, svinec, bizmut, kositer in antimon, vplivajo na preoblikovalnost nerjavnih jekel. V delu je prikazan vpliv segregacij žvepla in svinca na faznih in strjevalnih mejah zrn, ki povzročajo nastanek razpok v vročem. Preskusi preoblikovalnosti so bili izvedeni na vzorcih iz industrijsko in laboratorijsko izdelanega jekla z vročim valjanjem in vročim upogibom.Source: Program in knjiga povzetkov = Program and book of abstracts (Str. 119)Type of material - conference contributionPublish date - 2007Language - slovenian, englishCOBISS.SI-ID - 640170
Author
Tehovnik, Franc |
Arh, Boštjan |
Arzenšek, Boris |
Kmetič, Dimitrij
Topics
jekla |
avstenitna nerjavna jekla |
vroče preoblikovanje |
strjevanje |
steels |
austenite stainless steels |
hot ductility |
solidification
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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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Tehovnik, Franc | 08001 |
Arh, Boštjan | 10762 |
Arzenšek, Boris | 08236 |
Kmetič, Dimitrij | 04982 |
Source: Personal bibliographies
and: SICRIS
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