
SDM IUT QUIZ 2
Quiz
•
Physics
•
University
•
Practice Problem
•
Hard
aflah elouneg
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel type de microstructure le mélange Fer-Carbone ?
Hypoeutectöide
Eutectoïde
Hypereutectoïde
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quelle est la principale raison d'effectuer un recuit sur un métal ?
Augmenter la dureté
Réduire les contraintes internes
Augmenter la densité
Réduire la conductivité électrique
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel paramètre influence principalement la vitesse de refroidissement lors de la trempe d'un acier ?
La composition chimique du métal
La température de transformation
Le milieu de trempe utilisé (eau, huile, air)
La température de revenu
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lors du revenu, quelle phase est transformée pour réduire la fragilité de l'acier ?
Perlite
Bainite
Martensite
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle phase est la plus dure après un traitement de trempe ?
Ferrite
Bainite
Martensite
Perlite
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dans un diagramme TTT, quelle transformation se produit si un acier austénitisé est refroidi lentement au-dessus de 500 °C?
Formation de martensite
Formation de bainite
Formation de perlite
Formation de cémentite
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identifier la microstrucutre martensitique
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