Fabrication and Characterization of a Stainless Steel Cylindrical Part by Wire Arc Additive Manufacturing Method

Öz

The use and importance of the wire arc additive manufacturing (WAAM) method has been increasing in recent years. The advantages of the method have been a factor supporting this proceed. One of these advantages is that a metal part, which is not available in the market or cannot be supplied as a standard, can be produced by the method. In this study, as an example, a cylindrical part was produced with the WAAM technique. This part, which can be described as relatively medium-sized, had a diameter of approximately 100 mm and a height of 120 mm. Macrostructure, tensile test, bending test, microstructure and microhardness studies were carried out with the samples taken from the produced part. No defects were found in the part during the macrostructure examinations. The mean tensile strength of the part was calculated as about 548MPa and mean the elongation was about 39%. In the microstructure studies, it was observed that the structure mainly consists of the austenite phase, but also contains the δ ferrite phase. The hardness of the manufactured part was measured as 212 HV on average.

Anahtar Kelimeler

• additive manufacturing
• WAAM
• cylinder
• stainless steel
• mechanical properties

Proje Numarası

1919B012109830

Tel Ark Eklemeli İmalat Yöntemiyle Paslanmaz Çelik Silindirik Parçanın Üretimi ve Karakterizasyonu

Öz

Tel ark eklemeli imalat (TAEİ) yönteminin kullanımı ve önemi son yıllarda giderek artmaktadır. Yöntemin avantajları bu ilerlemeyi destekleyen birer faktör olmuştur. Bu avantajlardan biri de piyasada bulunmayan veya standart olarak temin edilemeyen bir metal parçanın bu yöntemle üretilebilmesidir. Bu çalışmada örnek olarak TAEİ tekniği ile silindirik bir parça üretilmiştir. Nispeten orta büyüklükte olarak nitelendirilebilecek bu parçanın çapı yaklaşık 100 mm ve yüksekliği 120 mm’dir. Üretilen parçadan alınan numunelere makro yapı, çekme testi, eğme testi, mikroyapı ve mikrosertlik çalışmaları yapılmıştır. Makro yapı incelemelerinde parçada herhangi bir kusura rastlanmamıştır. Parçanın ortalama çekme dayanımı 548 MPa ve ortalama maksimum uzaması yaklaşık %39 olarak hesaplanmıştır. Mikroyapı çalışmalarında yapının ağırlıklı olarak östenit fazından oluştuğu, bununla birlikte δ ferrit fazını da içerdiği gözlemlenmiştir. Üretilen parçanın sertliği ortalama 212 HV olarak ölçülmüştür.

Anahtar Kelimeler

• eklemeli imalat
• TAEİ
• silindir
• paslanmaz çelik
• mekanik özellikler

Destekleyen Kurum

TÜBİTAK

Proje Numarası

1919B012109830

Teşekkür

Bu çalışma TÜBİTAK tarafından 2209-A Üniversite Öğrencileri Araştırma Projeleri Destekleme Programı kapsamında (Proje başvuru no: 1919B012109830) desteklenmiştir. Yazarlar ilgili kuruma teşekkür ederler.

Kaynakça

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