5-8 September 2022
Wyndham Grand Salzburg Conference Center
Europe/Vienna timezone

Influence of the quenching and partitioning heat treatment process on the hydrogen embrittlement resistivity of 20MnSi steel

6 Sep 2022, 13:45
25m
Room 3

Room 3

Oral Presentation Thermal processing of Iron and Steels (annealing, hardening, tempering, Q&T, Q&P) STEEL

Speaker

Hamdi ELASYED (TU Graz)

Description

This work addresses the influence of the quenching and partitioning (Q&P) heat treatment parameters on the mechanical properties and hydrogen embrittlement (HE) resistivity of 20MnSi wire rod steel. The retained austenite (RA) volume fraction in Q&P heat-treated wires is responsible for the high ductility. However, its influence on hydrogen embrittlement resistivity is still controversial in the literature. The RA volume fractions gained from different Q&P heat treatments and their morphology were determined using different techniques. The hydrogen embrittlement susceptibility was measured using an incremental step load test (ISLT) technique according to standard ASTM F1624-12. The results show that heat treatment parameters do not significantly affect strength ~ 1300MPa. However, the partitioning time tP has the highest impact on ductility and hydrogen embrittlement index (EI) provided that the relative EI could be improved from 46,7% to 35.5% due to increasing the partitioning time from 420s to 1800s

Register for the Tom Bell Young Author Award (TBYAA)? No
Speaker Country Austria

Primary author

Hamdi ELASYED (TU Graz)

Co-authors

Dr Andreas DREXLER (TU Graz) Mr Abdelhafiz ALSHARIF (TU Graz) Dr Fernando WARCHOMICKA (TU Graz) Dr Matthew GALLER (voestalpine Wire Rod Austria GmbH) Dr Rudolf VALLANT (TU Graz) Prof. Christof SOMMITSCH (TU Graz)

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