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Journals / Düzce Üniversitesi Bilim ve Teknoloji Dergisi / 2019 / Cilt: 7 - Sayı: 1

Strength Optimization of Resistance Spot Welded TWIP Steel by Taguchi Method

Taguchi Yöntemi ile Nokta Direnç Kaynaklı TWIP Çeliklerin Dayanım Optimizasyonu

Hayriye ERTEK EMRE
Pages
778–787
Publication Date
2022-11-03
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It has been determined that the most effective variable for weld nugget diameter value is welding time, while the most important welding parameter for effecting tensile shear strength is the welding current.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The microstructure and mechanical properties of TWIP (TWinning Induced Plasticity) sheets, one of the members of Advanced High Strength Steel (AHSS), are affected by excessive thermal cycles such as welding and heat treatment.
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Key Findings & Data:For this purpose, the optimization of the tensile shear strength and weld nugget diameter of the weldments were determined by using Taguchi experimental design method and L9 orthogonal array was chosen.
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Conclusion & Impact:It has been determined that the most effective variable for weld nugget diameter value is welding time, while the most important welding parameter for effecting tensile shear strength is the welding current.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:TWIP çelikleri · Taguchi metodu · Çekme makaslama dayanımı

Abstract

The microstructure and mechanical properties of TWIP (TWinning Induced Plasticity) sheets, one of the members of Advanced High Strength Steel (AHSS), are affected by excessive thermal cycles such as welding and heat treatment. In this study, TWIP steel sheets are joined with the resistance spot weld in various welding parameters for optimization of the strength and weld nugget geometry. For this purpose, the optimization of the tensile shear strength and weld nugget diameter of the weldments were determined by using Taguchi experimental design method and L9 orthogonal array was chosen. Based on the analysis test results, the optimum welding parameter which provides the best strength and weld nugget quality for the resistance spot welded TWIP steel was determined by Taguchi analysis as 7kA welding current and 20 cycle welding time (A2B3). It has been determined that the most effective variable for weld nugget diameter value is welding time, while the most important welding parameter for effecting tensile shear strength is the welding current.

Özet

İleri yüksek mukavemetli çeliklerin (Advanced High Strength Steel-AHSS) üyelerinden biri olan TWIP (TWinning Induced Plasticity- İkizlenmeyle plastisite kazanan) çeliklerin mikroyapı ve mekanik özellikleri, kaynak ve ısıl işlem gibi yüksek termal döngülerden etkilenirler. Bu çalışmada, mukavemet ve kaynak çekirdek geometrisinin optimizasyonu için çeşitli kaynak parametrelerinde TWIP çelik saclar nokta direnç kaynağı ile birleştirilmiştir. Bu amaçla, deney numunelerinin çekme makaslama dayanımı ve kaynak çekirdek çapının optimizasyonu Taguchi deneysel tasarım yöntemi kullanılarak belirlenmiş ve L9 ortogonal dizini seçilmiştir. Analiz test sonuçlarına dayanarak, Taguchi analiziyle belirlenen nokta direnç kaynaklı TWIP çeliği için en iyi mukavemet ve kaynak çekirdek kalitesini veren optimum kaynak parametresi, 7 kA kaynak akımı ve 20 çevrim kaynak zamanı (A2B3) olarak belirlenmiştir. Çekme makaslama dayanımının etki eden en önemli kaynak parametresi kaynak akımı iken, kaynak çekirdek çapı değeri için en etkili değişkenin kaynak zamanı olduğu belirlenmiştir.

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Cite This Article

EMRE, H. E. (2022). Strength Optimization of Resistance Spot Welded TWIP Steel by Taguchi Method. Düzce Üniversitesi Bilim ve Teknoloji Dergisi, Cilt: 7 - Sayı: 1, 778–787. https://ajindex.com/articles/649840

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