Effect of Si and Al on Retained Austenite Stabilization during Q&P and Galvannealing Process

The present contribution concentrates on the different effects of Si and Al on the carbide precipitation and austenite decomposition during the Q&P-process and an additional galvannealing treatment of up to 560 °C. These effects have been investigated by dilatometry (derivation of relative lengt...

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Veröffentlicht in:BHM. Berg- und hüttenmännische Monatshefte 2022, Vol.167 (11), p.542-545
Hauptverfasser: Wallner, Matthias, Steineder, Katharina, Schneider, Reinhold, Sommitsch, Christof
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container_end_page 545
container_issue 11
container_start_page 542
container_title BHM. Berg- und hüttenmännische Monatshefte
container_volume 167
creator Wallner, Matthias
Steineder, Katharina
Schneider, Reinhold
Sommitsch, Christof
description The present contribution concentrates on the different effects of Si and Al on the carbide precipitation and austenite decomposition during the Q&P-process and an additional galvannealing treatment of up to 560 °C. These effects have been investigated by dilatometry (derivation of relative length change) and differential scanning calorimetry (heat flow) during tempering. It was possible to show the beneficial effect of Si on retarding the carbide precipitation in tempered martensite and thereby the ability to stabilize higher amounts of retained austenite compared to Al. Furthermore, the effect on retained austenite decomposition during Q&P and subsequent galvannealing could be demonstrated. Here, Al has the benefit to increase the thermal stability of austenite during galvannealing.
doi_str_mv 10.1007/s00501-022-01294-4
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subjects Aluminum
Annealing
Carbides
Decomposition
Dilatometry
Earth and Environmental Science
Earth Sciences
Heat transmission
Mineral Resources
Originalarbeit
Retained austenite
Tempered martensite
Thermal stability
title Effect of Si and Al on Retained Austenite Stabilization during Q&P and Galvannealing Process
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