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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Saastamoinen, Ari
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2022Impact-abrasive and abrasive wear behavior of low carbon steels with a range of hardness-toughness propertiescitations
- 2020Impact-abrasive and abrasive wear behavior of low carbon steels with a range of hardness-toughness propertiescitations
- 2020Constitutive modelling of hot deformation behaviour of a CoCrFeMnNi high-entropy alloycitations
- 2019Annealing Effects on the Microstructure and Properties of Vanadium and Molybdenum Rich FCC High Entropy Alloycitations
- 2019Microstructure and Mechanical Properties of Nb and V Microalloyed TRIP-Assisted Steelscitations
- 2019Quenching and Partitioning of Multiphase Aluminum-Added Steelscitations
- 2019Direct-quenched and tempered low-C high-strength structural steel: The role of chemical composition on microstructure and mechanical propertiescitations
- 2018The effect of tempering temperature on microstructure, mechanical properties and bendability of direct-quenched low-alloy strip steelcitations
- 2018The effect of finish rolling temperature and tempering on the microstructure, mechanical properties and dislocation density of direct-quenched steelcitations
- 2017The effect of thermomechanical treatment and tempering on the subsurface microstructure and bendability of direct-quenched low-carbon strip steelcitations
- 2015Fast Salt Bath Heat Treatment for a Bainitic/Martensitic Low-Carbon Low-Alloyed Steelcitations
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article
The effect of tempering temperature on microstructure, mechanical properties and bendability of direct-quenched low-alloy strip steel
Abstract
he tempering of re-austenized, quenched and tempered (RAQT) martensitic steels is an extensively studied and well understood field of metallurgy. However, a similar understanding of the effect of tempering on direct-quenched (DQ) high-strength steels has been lacking. Now, for the first time, the effect of tempering in the range of 250–650 °C on the strength, toughness, bendability, microstructure, crystallography and dislocation density of a DQ steel is reported. In the case of tempering at 570 °C, the effects of having a RAQ or DQ starting condition are compared. For the composition and thermal cycles studied, it was found that a peak tempering temperature in the range of 570–600 °C resulted in a DQT steel with an optimal balance of strength, bendability and toughness, i.e. a yield strength greater than 960 MPa, a minimum usable bending radius of 2 times the sheet thickness and T28J of − 50 to − 75 °C depending on the test direction. Crystallographic texture, dislocation density and the distribution of carbides are important factors affecting the bendability of DQT strip. Tempering had no effect on texture, but strongly influenced the size and distribution of carbides thereby resulting in differences in bendability and impact toughness transition temperature.