Optimization of Welding Parameters of AISI 431 and AISI 1020 Joints Joined by Friction Welding Using Taguchi Method

Yıl 2022, , 453 - 470, 30.06.2022

Mehmet Şükrü Adin , Bahattin İşcan , Şehmus Baday

https://doi.org/10.35193/bseufbd.1075980

Cited By: 14

Öz

Martensitic stainless steel AISI 431 and low carbon steel AISI 1020 are materials used together in many different industries. However, important problems are encountered when welding (fusion welding) these materials to each other. For this reason, friction welding process (Solid-state welding) is used to join these dissimilar metals. There are very few studies on joining these materials with friction welding. Therefore, the optimization of the welding parameters used in joining these dissimilar steel pairs with friction welding is of great important. In addition, the effects of the factors dependent on friction welding parameters need to be well understood. In this study, AISI 431 and AISI 1020 steel bars were successfully joined by friction welding, and the effects of welding parameters on tensile strength and axial shortening were investigated, and welding parameters were optimized using Taguchi method to obtain quality weld joints. The experimental results of the study showed that the highest tensile strength (573.32 MPa) of the joints was 54.53%, higher than the lowest tensile strength (370.99 MPa), the highest axial shortening (23.18 mm) was 650.16%, higher than the lowest axial shortening (3.09 mm). The optimal parameters for average axial shortening and average tensile strength were determined as A3B1C3 and A3B3C2; and the highest percentage contribution values for axial shortening and tensile strength were found to be 51.55% (rotating speed) and 63.90% (rotating speed); and R2 values for the average axial shortening and average tensile strengths were found to be 97% and 99.3%, respectively.

Anahtar Kelimeler

Friction Welding, Optimization, Taguchi Method, AISI 431, AISI 1020

Taguchi Yöntemi Kullanılarak Sürtünme Kaynağı ile Birleştirilen AISI 431 ve AISI 1020 Bağlantılarının Kaynak Parametrelerinin Optimizasyonu

Öz

Martensitik paslanmaz çelik AISI 431 ve düşük karbonlu çelik AISI 1020 birçok farklı endüstride birlikte kullanılan malzemelerdir. Ancak bu malzemeleri kaynak ederken (Fusion welding) önemli sorunlarla karşılaşılmaktadır. Bu nedenle, birbirine benzemeyen bu metalleri birleştirmek için sürtünme kaynağı işlemi (Solid-state welding) kullanılmaktadır. Bu malzemelerin sürtünme kaynağı ile birleştirilmesi konusunda çok az çalışma bulunmaktadır. Bu yüzden, birbirine benzemeyen bu çelik çiftlerinin sürtünme kaynağı ile birleştirilmesinde kullanılan kaynak parametrelerinin optimizasyonu büyük önem taşımaktadır. Ayrıca sürtünme kaynağı parametrelerine bağlı faktörlerin etkilerinin iyi anlaşılması gerekmektedir. Bu çalışmada, AISI 431 ve AISI 1020 çelik çubuklar sürtünme kaynağı ile başarılı bir şekilde birleştirilmiş, kaynak parametrelerinin çekme mukavemeti ve eksenel kısalma üzerindeki etkileri araştırılmış ve kaliteli kaynak bağlantıları elde etmek için Taguchi yöntemi kullanılarak kaynak parametreleri optimize edilmiştir. Çalışmanın deneysel sonuçları, bağlantıların en yüksek çekme dayanımının (573.32 MPa) %54.53, en düşük çekme dayanımından (370.99 MPa) daha yüksek olduğunu, en yüksek eksenel kısalmanın (23.18 mm) %650.16, en düşük eksenel kısalmadan (3,09 mm) daha yüksek olduğunu göstermiştir. Ortalama eksenel kısalma ve ortalama çekme mukavemeti için optimal parametreler A3B1C3 ve A3B3C2 olarak belirlendi; ve sırasıyla, eksenel kısalma ve çekme mukavemeti için en yüksek yüzde katkıdeğerleri %51.55 (dönme hızı) ve %63.90 (dönme hızı); ortalama eksenel kısalma ve ortalama çekme dayanımları için R2 değerleri %97 ve %99.3 olarak bulunmuştur.

Anahtar Kelimeler

Sürtünme Kaynağı, Optimizasyon, Taguchi Yöntemi, AISI 431, AISI 1020

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