Com a realização da presente dissertação foi possível retirar as seguintes conclusões:
• A preparação metalográfica das amostras a analisar deve ser feita até aos panos com suspensão de diamante de 1 µm de forma a conduzir uma quantificação eficaz da porosidade;
• Valores baixos de ID são indicadores da presença de microrechupes na estrutura das amostras, uma vez que o hidrogénio dissolvido no banho não é suficiente para contrariar a contração natural da liga;
• Existe uma correlação linear positiva entre o valor da porosidade média e o valor de ID da mesma amostra;
• Com a análise em profundidade foi possível concluir que o valor médio da porosidade, obtido pelo método de quantificação desenvolvido, é igual por toda a amostra, assumindo um erro de 5%;
• O método desenvolvido e descrito no procedimento experimental é válido e permite obter uma estimativa aceitável para a quantificação da porosidade originada pela absorção de hidrogénio em ligas de alumínio fundidas.
5.1. Trabalhos futuros
No seguimento do trabalho realizado nesta dissertação, seria interessante abordar os seguintes tópicos em trabalhos futuros:
• Realização de um estudo mais detalhado sobre o fenómeno do aparecimento de microrechupe em amostras com baixo valor de ID. Seria interessante encontrar o valor mínimo de ID para que este fenómeno deixe de ocorrer;
• Aplicar o método experimental definido nesta dissertação a uma amostragem maior e aumentar o número de campos analisados por amostras de maneira a diminuir a dispersão de dados.
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