
Tratamentos Térmicos do Aço
Interactive Video
•
Science, Professional Development
•
8th - 12th Grade
•
Hard

Ethan Morris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a principal característica que a têmpera confere ao aço?
Maleabilidade
Elasticidade
Dureza
Flexibilidade
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que acontece com a austenita durante o resfriamento brusco na têmpera?
Transforma-se em ferrita
Transforma-se em sementita
Transforma-se em martensita
Transforma-se em perlita
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Por que o resfriamento na têmpera é feito de forma brusca?
Para aumentar a elasticidade
Para formar martensita rapidamente
Para reduzir a dureza
Para aumentar a maleabilidade
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a temperatura crítica para a têmpera do aço carbono?
1000 a 1200 graus Celsius
200 a 400 graus Celsius
500 a 600 graus Celsius
750 a 900 graus Celsius
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o efeito do resfriamento brusco na estrutura atômica do aço?
Aumenta a elasticidade
Reduz a resistência à tração
Cria tensões internas e aumenta a dureza
Aumenta a maleabilidade
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a função do revenimento após a têmpera?
Reduzir a resistência à tração
Aumentar a dureza
Reduzir a dureza e aliviar tensões
Aumentar a elasticidade
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a diferença principal entre a austempera e a martempera?
Austempera forma bainita, martempera forma martensita
Austempera não requer revenimento, martempera sim
Austempera é mais rápida que martempera
Austempera é usada para aços-liga, martempera para aço carbono
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