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Title:Določevanje dobe trajanja nerjavnih jekel v pogojih napetostno korozijskega pokanja
Authors:ID Tandler, Marko (Author)
ID Vehovar, Leopold (Author)
ID Doleček, Valter (Author)
Files:.pdf Materiali_in_tehnologije_2001_Tandler,_Vehovar,_Dolecek_Dolocevanje_dobe_trajanja_nerjavnih_jekel_v_pogojih_napetostno_korozijskega_poka.pdf (339,41 KB)
MD5: 6D08485AE0F5E504FA8370BCA5063FD8
 
URL http://www.dlib.si/details/URN:NBN:SI:DOC-I9BX0J88
 
Language:Slovenian
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Pregled literature kaže, da še ni enotno priznane razlage za proces napetostne korozije. Zaradi tega in kompleksnosti napetostne korozije pa je tudi zahtevno določiti dobo trajanja konstrukcij, izpostavljenih napetostno korozijskemu pokanju. V zadnjem času se je pojavila nova metoda določevanja t.i. korozijske krivulje raztezanja, ki omogoča te vrste napovedi. Z njeno modifikacijo nam je uspelo natančno določiti primarno, sekundarno in terciarno področje. Na osnovi odvisnosti log i$_ss$-log t in log sigma-log t so bili konstruirani obratovalni diagrami, ki dajejo možnost napovedi časa do nastanka razpoke, njene stabilne rasti in časa do zloma materiala. Poznanje laboratorijskih rezultatov in korelacija teh s podobnimi iz prakse omogoča uporabo obratovalnih diagramov za napoved dobe trajanja vitalnih delov strojne opreme ter drugih konstrukcij v različnih vejah industrije.
Keywords:korozija, napetostno korozijsko pokanje, korozijske krivulje raztezanja, obratovalni diagrami
Publication status:Published
Publication version:Version of Record
Year of publishing:2001
Number of pages:str. 361-374
Numbering:Letn. 35, št. 6
PID:20.500.12556/DKUM-58172 New window
ISSN:1580-2949
UDC:669.14.018.8:620.193
ISSN on article:1580-2949
COBISS.SI-ID:329055 New window
NUK URN:URN:SI:UM:DK:FMH7CF5R
Publication date in DKUM:16.03.2017
Views:1210
Downloads:115
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Materiali in tehnologije
Shortened title:Mater. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
ISSN:1580-2949
COBISS.SI-ID:106193664 New window

Secondary language

Language:English
Title:Lifetime prediction of stainless steels in stress corrosion environments
Abstract:A survey of the literature has shown that there is no clear or accurate definition of stress corrosion cracking processes. Because of this and because of the complexity of these processes, it is very difficult to determine the lifetime of metallic materials when exposed to stress corrosion cracking. Over the last few years a new method for defining corrosion elongation curves has been developed, on the basis of which such lifetimes can be predicted. Using various modifications of this method, it is possible to determine accuratelt the primary, secondary and tertiart regions of corrosion elongation curves. On the basis of experimentally-determined relationships between log i$_ss$, and log sigma, on the one hand, and log t, on the other hand, working diagrams have been constructed from which it is possible to predict the time to crack initiation, the time of the crack's stable growth, and the time to failure of the material. Based on the results of laboratory tests, and the correlation of these results with those obtained in practice, such working diagrams can be used to determine the lifetime of vital parts of machinery and other structures in various branches of industry.
Keywords:corrosion, stress corrosion cracking, corrosion elongation curves, working diagram


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