HEAT TREATMENT OF THE TRIP STEEL WITH PARTIAL SUBSTITUTION OF SILICON BY ALUMINIUM

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F17%3A43950033" target="_blank" >RIV/49777513:23210/17:43950033 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
HEAT TREATMENT OF THE TRIP STEEL WITH PARTIAL SUBSTITUTION OF SILICON BY ALUMINIUM
Original language description
Low alloyed high strength steel utilizing TRIP (transformation induced plasticity) effect achieve interesting combinations of relatively good strengths around 800 MPa and high elongation above 30%. This is the reason why these steels are developed mainly for an automotive industry. Good mechanical properties of TRIP steels are obtained due to the multiphase microstructure of these steels consisting of ferrite, carbide-free bainite and metastable retained austenite. This microstructure can be prepared by two step annealing with the second hold in temperature region of bainite transformation. This heat treatment was carried out in a laboratory furnace in this work using 0.2C-1.5Mn-0.6S-1.5Al steel. Heating temperatures of 770-950 °C were used with subsequent cooling in salt bath heated to 200 °C or 400 °C. After reaching the temperature of 425 °C, the samples were moved to the furnace and held at the temperature of 425° C. Final microstructures were characterised by scanning electron microscopy and mechanical properties were measured by tensile test. Resulting microstructures achieved the strengths of 750 – 908 MPa and total elongations of 33-42%.
Czech name
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Czech description
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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)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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