LISTA 2 EXERCÍCIOS Manufatura Mecânica

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MANUFATURA MECÂNICA: CONFORMAÇÃO DOS METAIS 
LISTA 2 - Exercícios Propostos 
1. Quais as origens dos defeitos em forjados? 
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2. Quais os tipos de defeitos em materiais metálicos? 
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3. Diferencie fraturas de fissuras. 
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4. Como se formam e o que causam as fraturas? 
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5. Como se formam e o que causam as dobras? 
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6. Por que o sobreaquecimento é tão prejudicial aos metais? 
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7. Por que inclusões como os sulfetos reduzem a conformabilidade? 
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8. Como a forma, a quantidade, a distribuição e as propriedades das inclusões 
afetam a conformabilidade? 
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9. O que são discordâncias e quais os seus tipos? 
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10. Como ocorre o processo de escorregamento de monocristais? 
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11. Quais as forças causadoras da deformação plástica? 
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12. Explique o processo de discordância que ocorre sob efeito do contorno dos grãos 
dos metais? 
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13. Qual o efeito do contorno de grão na resistência dos materiais? 
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14. Diferencie os seguintes processo de tratamento térmicos: recuperação, 
recristalização e crescimento dos grãos. 
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15. O que são deformações por maclações? 
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