Eklemeli İmalatla Üretilen İşlevsel Olarak Derecelendirilmiş Metal Yapılar

İşlevsel olarak derecelendirilmiş yapılar (İDY), konvansiyonel malzeme işleme yöntemleri ile elde edilemeyen, aynı parça içerisinde birden çok fiziksel özelliğin elde edilebilmesi için mikroyapı, gözeneklilik veya kimyasal kompozisyonun, malzemenin hacmi boyunca kademeli olarak değiştiği bir malzeme çeşididir. Metal İDY, farklı konvansiyonel üretim yöntemleri ile üretilebilmektedir fakat Eklemeli İmalat (Eİ) konusunda son zamanlarda elde edilen gelişmeler, karmaşık şekillerin üretilebilme ihtimali, düşük prototipleme maliyetleri, asgari kalıp üretimi, yüksek hassasiyet ve işlemin yüksek tekrar edilebilme özelliklerinden dolayı, farklı türlerde İDY’lerin üretilebilmesine olanak sağlamaktadır. Bu çalışmada, Eİ ile üretilen metal İDY’ler konusunda son yıllarda elde edilen gelişmelere odaklanılmıştır. Eİ ile üretilen metal İDY’lerin detaylı literatür taraması ve farklı endüstrilerde kullanımı bu çalışmada anlatılacaktır.

Anahtar Kelimeler:

İşlevsel olarak derecelendirilmiş yapılar, eklemeli imalat, , seçmeli lazer ergitme,

Metal Additive Manufactured Functionally Graded Structures

Functionally graded structure (FGS) is a type of material where microstructure, porosity or chemical composition is gradually changing across the volume of the material so that multiple physical properties not possible within the same part made by conventional material processing techniques can be achieved. Metal FGSs can be produced with different conventional manufacturing processes but recent advances in Additive Manufacturing (AM) enable the production of different type of FGSs with the possibility of production of complex shapes, low cost for prototyping, minimum tooling, high accuracy and high repeatability. The present paper focuses on the recent advances in metal AM of FGSs. A detailed review of researches on metal AM of FGSs and their usage in different industries will be presented in this paper.

Keywords:

Functionally graded structure, , additive manufacturing, selective laser melting,

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