Inicio > Tecnología, ingeniería, agricultura > Tecnología: cuestiones generales > Ingeniería: general > Impacto do envelhecimento a longo prazo a 475°C na microestrutura da liga CUSTOM 465
Impacto do envelhecimento a longo prazo a 475°C na microestrutura da liga CUSTOM 465

Impacto do envelhecimento a longo prazo a 475°C na microestrutura da liga CUSTOM 465

Hafsa Iqbal / Muhammad Ahmad Iqbal / Vlastimil Vodárek

61,51 €
IVA incluido
Disponible
Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Ingeniería: general
ISBN:
9786208743086
61,51 €
IVA incluido
Disponible

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Sobre IBD

Este livro explora os efeitos do envelhecimento a longo prazo a 475°C sobre a microestrutura e as propriedades da liga Custom 465®. Abrange os aspectos teóricos dos aços inoxidáveis endurecidos por precipitação, incluindo a formação de austenite revertida e o seu impacto nas propriedades mecânicas, juntamente com o processo de fragilização a 475°C nos aços Fe-Cr. Os resultados experimentais utilizando TEM e XRD mostram que o tratamento térmico adequado conduz à precipitação de partículas de η-Ni3Ti e a uma pequena quantidade de austenite revertida na martensite temperada. O envelhecimento prolongado a 475°C durante 1000 e 2000 horas resulta numa maior precipitação e num aumento da austenite revertida, o que ajuda a atenuar o efeito de endurecimento da fase rica em α’-Cr. O estudo demonstra que, embora a resistência diminua com o envelhecimento prolongado, o alongamento e a energia de impacto permanecem praticamente inalterados.

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