Double-phase steels have a microstructure consisting of ferrite and martensite, and sometimes a little bainite (figure
1
). The level of maximum tensile strength depends on the volume fraction of martensite: the higher the fraction, the higher the tensile strength.
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(1) - ROGER (F.) -
Étude physique de la formation d'un cordon de soudure à l'arc soudure MAG et perspectives de modélisation.
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Thèse Université (2000).
(2) - PLANCKAERT (J.-P.) -
Modélisation du soudage MIG et MAG en mode short arc.
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MAG welding: key parameters
