High ductility of bainite-based microstructure of middle carbon steel 42SiMn
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F17%3A43931579" target="_blank" >RIV/49777513:23210/17:43931579 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/article/10.1088/1757-899X/179/1/012044/pdf" target="_blank" >http://iopscience.iop.org/article/10.1088/1757-899X/179/1/012044/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/179/1/012044" target="_blank" >10.1088/1757-899X/179/1/012044</a>
Alternative languages
Result language
angličtina
Original language name
High ductility of bainite-based microstructure of middle carbon steel 42SiMn
Original language description
Heat and thermo-mechanical treatments with various processing parameters were applied to middle carbon low alloyed 42SiMn steel. The aim of the treatment was to obtain multiphase microstructure typical for TRIP (Transformation induced plasticity) steel and to achieve the best combination of ultimate tensile strength and ductility. TRIP steels typically possess about 5-15% of metastable retained austenite, which can transform to martensite during plastic deformation. The gradual phase transformation during loading postpones the onset of necking, thus increasing ultimate tensile strength and ductility at the same time. Manganese and silicon, used as the main alloying elements of the experimental steel, are employed to increase austenite stability and to hinder cementite precipitation during the treatment. All proposed methods of heat and thermo-mechanical treatment contain bainitic hold at 400 °C or 425 °C. The final microstructures were very complex, consisting of bainite, ferrite, very small areas of extremely fine perlite lamellas, about 10% of retained austenite and M-A constituent (austenitic islands partially transformed to martensite). Even though pearlite and martensite are undesirable microstructure in TRIP steel, the tensile strength ranged from 850 to 1065 MPa and ductility A5mm from 26 to 47 %.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/LO1502" target="_blank" >LO1502: Development of Regional Technological Institute</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
IOP Conference Series-Materials Science and Engineering
ISBN
—
ISSN
1757-8981
e-ISSN
neuvedeno
Number of pages
6
Pages from-to
1-6
Publisher name
IOP PUBLISHING LTD
Place of publication
Bristol
Event location
Pilsen
Event date
Nov 9, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000403407100044