Eklemeli İmalat Tekniğiyle Üretilen AISi10Mg Alüminyum Alaşımlı Plakaların Özellikleri

Abstract

Eklemeli imalat yöntemi ile üretilen AlSi10Mg alüminyum alaşımlı levhaların mikroyapı ve mekanik özellikleri ortaya çıkarıldı. Mikro yapının, sınırlarla ayrılmış kaynak havuzlarından oluştuğu açıkça gözlemlenmiştir. Ayrıca, mikro yapıda çapları 35 µm ile 5 µm arasında değişen az sayıda dağınık gözenek tespit edilmiştir. Birkaç küçük gözenek, iyi bir üretimin işaretidir. Üretilen AlSi10Mg alaşımının Vickers mikro sertliği ortalama 126,625 HV olarak ölçülmüştür. Ayrıca, çekme dayanımı ve üç noktalı eğilme dayanımı değerleri sırasıyla 433 MPa ve 548 MPa olarak bulunmuştur. Çekme kırılma yüzeyinde çok sayıda küçük ve derin çukur bulunurken, üç noktalı eğilme kırılma yüzeyinde de çukurlar bulunmaktaydı, ancak bu çukurlar çekme kırılmasına kıyasla daha büyük ve daha sığdı. Çekme ve üç nokta eğme testleri makul bir sünek kırılma davranışı göstermiştir.

Keywords

• Eklemeli imalat
• AlSi10Mg alüminyum alaşımı
• mikroyapı
• mikrosertlik
• çekme dayanımı
• üç nokta eğme dayanımı

Characteristics of AISi10Mg Aluminum Alloy Plates Produced Through Additive Manufacturing Technique

Abstract

TThe microstructure and mechanical properties of AlSi10Mg aluminum alloy sheets produced by additive manufacturing method were revealed. It was clearly observed that the microstructure consisted of weld pools separated by boundaries. Furthermore, a small number of distributed pores with diameters ranging from 35 µm to 5 µm were detected in the microstructure. A few small-sized pores are a sign of good production. Vickers microhardness of the produced AlSi10Mg alloy was measured to be average 126.625 HV. Additionally, its tensile strength and three-point bending strength value were found to be 433 MPa and 548 MPa, respectively. The tensile fracture surface had many small and deep dimples while three-point bending fracture surface also possessed dimples, however, bigger and shallower compared with that of tensile fracture. Therefore, the tensile and three-point bending tests showed a reasonable ductile fracture behavior.

Keywords

• Additive manufacturing
• AlSi10Mg aluminum alloy
• microstructure
• microhardness
• tensile strength
• three-point bending strength

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