Abstract
This study investigated the effect of solution atoms (C, Al and Si) on hydrogen embrittlement resistance of TWIP steels. Fe-30Mn-0.6C steel was more sensitive to hydrogen embrittlement than Fe-30Mn-3Al3Si steel. Moreover, the crack mode of Fe-30Mn-3Al3Si steel was a combination of transgranular and intergranular cracks, while transgranular crack was rarely found in Fe-30Mn-0.6C steel. Because compare to substitutional atoms (Al and Si), interstitial C atoms promoted the random grain boundary cracking. Furthermore, the rapid propagation of random grain boundary cracking in steel containing C atoms led to the absence of transgranular cracking. Data AvailabilityThe raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.
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