Stability of retained austenite in high-strength martensitic steels during cold deformation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F17%3A43931649" target="_blank" >RIV/49777513:23210/17:43931649 - isvavai.cz</a>
Result on the web
<a href="http://www.daaam.info/Downloads/Pdfs/proceedings/proceedings_2017/039.pdf" target="_blank" >http://www.daaam.info/Downloads/Pdfs/proceedings/proceedings_2017/039.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2507/28th.daaam.proceedings.039" target="_blank" >10.2507/28th.daaam.proceedings.039</a>

Result language
angličtina
Original language name
Stability of retained austenite in high-strength martensitic steels during cold deformation
Original language description
The toughness of high-strength steels is improved when their martensitic matrix is combined with the presence of retained austenite. The stability of retained austenite is crucial, both upon cooling to room temperature and during subsequent cold deformation. One of the advanced heat treatment methods, which produces larger amounts of retained austenite in martensitic matrix thanks to an appropriate combination of parameters, is the Q&P process (Quenching and Partitioning). It produces microstructures consisting of martensite and retained austenite which exhibit strengths above 2000 MPa and elongation levels of more than 10%. The steel which was designed for this experiment was alloyed with manganese, silicon, molybdenum and chromium and had a low Ms temperature. This experimental heat treatment led to a martensitic microstructure with retained austenite, with ultimate strengths in the range of 2200-2400 MPa and A5mm elongations of 7-10%. The largest fraction of retained austenite, according to X-ray diffraction analysis, was 10%. The behaviour of retained austenite under mechanical load was studied by means of compression tests to various strain levels. The resulting microstructures were observed using optical and scanning electron microscopes..
Czech name
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Czech description
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Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 28th DAAAM International Symposium
ISBN
978-3-902734-11-2
ISSN
1726-9679
e-ISSN
neuvedeno
Number of pages
6
Pages from-to
289-294
Publisher name
DAAAM International
Place of publication
Vienna
Event location
Zadar
Event date
Nov 8, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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