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Title:Evaluation of the impact and fracture toughness of a nanostructured bainitic steel with low retained austenite content
Authors:ID Brunčko, Mihael (Author)
ID Kirbiš, Peter (Author)
ID Anžel, Ivan (Author)
ID Gusel, Leo (Author)
ID Feizpour, Darja (Author)
ID Irgolič, Tomaž (Author)
ID Vuherer, Tomaž (Author)
Files:.pdf Bruncko-2023-Evaluation_of_the_Impact_and_Frac.pdf (6,44 MB)
MD5: 00A32942FBA7F0CB7408C65A47A46EE3
 
URL https://doi.org/10.3390/ma16052003
 
Language:English
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:The impact and fracture toughness of a nanostructured, kinetically activated bainitic steel was determined using Standard methods. Prior to testing, the steel was quenched in oil and aged naturally for a period of 10 days in order to obtain a fully bainitic microstructure with a retained austenite content below 1%, resulting in a high hardness of 62HRC. The high hardness originated from the very fine microstructure of bainitic ferrite plates formed at low temperatures. It was determined that the impact toughness of the steel in the fully aged condition improved remarkably, whereas the fracture toughness was in line with expectations based on the extrapolated data available in the literature. This suggests that a very fine microstructure is most beneficial to rapid loading conditions, whereas material flaws such as coarse nitrides and non-metallic inclusions are the major limitation for obtaining a high fracture toughness.
Keywords:evaluation of fracture toughness, impact toughness, nanostructured bainite, natural aging, low retained austenite content, kinetically activated bainite KAB
Publication status:Published
Publication version:Version of Record
Submitted for review:24.01.2023
Article acceptance date:22.02.2023
Publication date:28.02.2023
Publisher:MDPI
Year of publishing:2023
Number of pages:Str. 1-12
Numbering:Letn. 16, Št. 5, št. članka 2003
PID:20.500.12556/DKUM-86992 New window
UDC:539.4:669.15-194.591
ISSN on article:1996-1944
COBISS.SI-ID:144522499 New window
DOI:10.3390/ma16052003 New window
Publication date in DKUM:16.02.2024
Views:312
Downloads:19
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Materials
Shortened title:Materials
Publisher:Molecular Diversity Preservation International
ISSN:1996-1944
COBISS.SI-ID:33588485 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P2-0120
Name:Tehnologije metastabilnih materialov

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:28.02.2023

Secondary language

Language:Slovenian
Keywords:ocena lomne žilavosti, udarna žilavost, nanostrukturni bainit, naravno staranje, nizka vsebnost zadržanega avstenita, kinetično aktiviran bainit KAB


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