The effect of strain rate on mechanical properties and retained austenite stability in C-Mn-Si-Al-Nb steel

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F19%3A43957208" target="_blank" >RIV/49777513:23210/19:43957208 - isvavai.cz</a>
Result on the web
<a href="https://www.metalconference.eu/files/uploads/02//METAL2019_Conference_Proceedings_Content.pdf" target="_blank" >https://www.metalconference.eu/files/uploads/02//METAL2019_Conference_Proceedings_Content.pdf</a>
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
The effect of strain rate on mechanical properties and retained austenite stability in C-Mn-Si-Al-Nb steel
Original language description
Low carbon low alloyed steel with partial substitution of silicon by aluminium was thermo-mechanically treated to obtain a multiphase microstructure typical for TRIP (transformation induced plasticity) steels. The processing consisted of soaking at 900°C and two compressive deformations applied during the cooling to the isothermal hold temperature of 425°C. The microstructure was predominantly bainitic with about 17% of retained austenite and little proeutectoid ferrite. The samples underwent tensile test with five different strain rates, 0.003, 0.3, 1, 10, 100 s-1. Mechanical properties show some dependency on strain rate, tensile strengths of 832-925 MPa were achieved together with total elongation of 30-38%. Significantly higher strain rates of 380, 470 and 520 s-1 were produced by impact test with various initial positions of the pendulum (90°, 120°, 150°). In these cases, only the impact energy was evaluated, showing the increasing values with increasing deformation rate. The effect of increasing strain rate on the stability of retained austenite was also evaluated by the means of X-ray diffraction phase analyses. The microstructure after the straining was documented by scanning electron microscopy, as well as fracture surfaces.
Czech name
—
Czech description
—

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2019-28th International Conference on Metallurgy and Materials, Conference Proceedings
ISBN
978-80-87294-92-5
ISSN
—
e-ISSN
—
Number of pages
6
Pages from-to
740-745
Publisher name
Tanger Ltd.
Place of publication
Ostrava
Event location
Brno, Česko
Event date
May 22, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000539487400119

Similar results(10)