RT Journal Article
SR Electronic
A1 Hajsman, Jan
A1 Kucerova, Ludmila
A1 Burdova, Karolina
T1 Comparison of high strength steels with different aluminium and manganese contents using dilatometry
JF Manufacturing Technology Journal
YR 2020
VO 20
IS 4
SP 436
OP 441
DO 10.21062/mft.2020.060
UL https://journalmt.com/artkey/mft-202004-0012.php
AB In this paper, the properties of three low carbon steels containing different percentage of manganese (1.5 or 3 wt%) and aluminium (1.5 or 2 wt %) were tested using dilatometric analysis and metallog-raphy. The steels had chemical compositions typical for TRIP (Transformation induced plasticity) steels and the two steels with an increased manganese content already belonged to the third genera-tion of AHS (advanced high strength) steels. The dilatometric measurement was employed not only to determine the characteristic transformation temperatures but also to simulate the heat treatment procedure commonly used for TRIP steels. Resulting microstructures obtained through this simula-tion were evaluated and compared. The two main alloying elements were proved to have a significant effect on the transition temperatures and thus on the processability and overall resulting properties of the material.