The Mechanical, Metallurgical and Corrosion Properties of Duplex Stainless Steel Pipes Welded by Orbital GTAW
Abstract
In this study, orbital GTAW welding of duplex stainless steel pipes which especially being used in areas such as chemistry, oil and gas, shipbuilding, medicine, food industry, is investigated. Duplex stainless steel pipe specimens (defined by UNS 31803 and EN 1.4462) which have 150 mm long, 1 mm thickness and 25 mm diameter, were butt-welded with three different welding parameters using pure argon gas as shielding gas. Intergranular and pitting corrosion tests (EN ISO 3651-1, ASTM G48-11), tensile test, SEM-EDX analysis and microstructure analysis were performed on welded samples. All specimens were fractured from HAZ. C2N precipitates, intermetallic phases and carbide formation were not found. All welded specimens performed good intergranular and pitting corrosion properties.
References
- 1. Kısasöz, A., Karaaslan, A., 2012. Dubleks Paslanmaz Çeliklerde Oluşan Yüksek Sıcaklık Fazlarına Genel Bir Bakış, Teknik Yazı, Türk Mühendis ve Mimar Odaları Birliği Metalurji Mühendisleri Odası, 7(162), 57-61s.
- 2. Nowacki, J., Lukojc, A., 2005. Structure and Properties of the Heat-Affected Zone of Duplex Steels Welded Joints, Journal of Materials Processing Technology, 164–165, pp. 1074–1081.
- 3. Karlsson, L., 1999. Review, Intermetallic Phase Precipitation in Duplex Stainless Steels and Weld Metals–metallurgy, İnfluence on Properties, Welding and Testing Aspects, Welding in the World, vol. 43, no. 5, pp. 20-41.
- 4. Ogawa, T., Koseki, T., 1989. Effect of Composition Profiles on Metallurgy and Corrosion Behavior of Duplex Stainless Steel Weld Metals, Welding Journal 68, pp. 181-191.
- 5. Kaluç, E., Taban, E., 2007. Paslanmaz Çelikler, Geliştirilen Yeni Türleri ve Kaynak edilebilirlikleri, TMMOB, İstanbul.
- 6. Lippold, J.C. Kotecki, D.J., 2005. Welding Metallurgy and Weldability of Stainless Steels, John Wiley and Sons, New Jersey, USA.
- 7. Wilsdorf, R. Pistor, R., Sixsmith, J.J. Jin, H., 2006. Welding Aluminum Pipe And Tube With Variable Polarity, Welding Journal, Vol. 85, no. 4, pp. 42-43.
- 8. Emmerson, J., 2000. Orbital Narrow Gap MCW Pipe Welding, Welding&Metal Fabrication, vol. 68, no. 8, pp. 9-11.
- 9. Benway, E.A., 2000. Advancements in Automatic Orbital Welding Expand Its Use, Provide Welders With More Option, Industrial Maintenance & Plant Operation, vol. 61, no. 7, pp. 22.
- 10. Latifi, H., 2012. Advanced Orbital Pipe Welding, Ms thesis, Lappeenranta University of Technology, Finland.
- 11. Harris, I.D., 2011. Welding Advances in Tube And Pipe Applications, Welding Journal, vol. 90, no. 6, pp. 58-63.
- 12. Benway, E.A., 2009. What To Look For in Orbital Welding Training Programs, Penton's Welding Magazine, vol. 82, no. 5, pp. 18-22.
- 13. POLYSOUDE, Orbital Welding Handbook, http://www.polysoude.com/orbital-welding (erişim tarihi 12 Haziran 2015).
Orbital Tig Kaynak Yöntemiyle Kaynak Edilmiş Dubleks Paslanmaz Çeliklerin Mekanik, Metalurjik ve Korozyon Özellikleri
Abstract
Bu çalışmada özellikle kimya, petrol ve doğalgaz, gemi inşa, ilaç, gıda sanayi gibi alanlarda yaygın olarak kullanılan dubleks paslanmaz çelik boruların orbital TIG kaynağı konusu incelenmiştir. 150 mm uzunluğunda, 1 mm et kalınlığı ve 25 mm çapındaki dubleks paslanmaz çelik borular (UNS 31803 ve EN 1.4462 ile tanımlı) üç farklı kaynak parametresi kullanılarak koruyucu ve kök koruyucu gaz olarak saf argon gazı altında alın alına kaynak edilmiştir. Kaynak edilen numunelere çekme, taneler arası ve oyuk korozyon testleri (EN ISO 3651-1, ASTM G48-11), SEM-EDX analizleri ve mikroyapı incelemeleri yapılmıştır. Tüm numuneler IEB’den kırılmıştır. C2N, intermetalik fazlar ve karbür oluşumlarına rastlanılmamıştır. Tüm kaynaklı numuneler taneler arası ve oyuk korozyonu için yeterli dayanımı sağlamıştır.
References
- 1. Kısasöz, A., Karaaslan, A., 2012. Dubleks Paslanmaz Çeliklerde Oluşan Yüksek Sıcaklık Fazlarına Genel Bir Bakış, Teknik Yazı, Türk Mühendis ve Mimar Odaları Birliği Metalurji Mühendisleri Odası, 7(162), 57-61s.
- 2. Nowacki, J., Lukojc, A., 2005. Structure and Properties of the Heat-Affected Zone of Duplex Steels Welded Joints, Journal of Materials Processing Technology, 164–165, pp. 1074–1081.
- 3. Karlsson, L., 1999. Review, Intermetallic Phase Precipitation in Duplex Stainless Steels and Weld Metals–metallurgy, İnfluence on Properties, Welding and Testing Aspects, Welding in the World, vol. 43, no. 5, pp. 20-41.
- 4. Ogawa, T., Koseki, T., 1989. Effect of Composition Profiles on Metallurgy and Corrosion Behavior of Duplex Stainless Steel Weld Metals, Welding Journal 68, pp. 181-191.
- 5. Kaluç, E., Taban, E., 2007. Paslanmaz Çelikler, Geliştirilen Yeni Türleri ve Kaynak edilebilirlikleri, TMMOB, İstanbul.
- 6. Lippold, J.C. Kotecki, D.J., 2005. Welding Metallurgy and Weldability of Stainless Steels, John Wiley and Sons, New Jersey, USA.
- 7. Wilsdorf, R. Pistor, R., Sixsmith, J.J. Jin, H., 2006. Welding Aluminum Pipe And Tube With Variable Polarity, Welding Journal, Vol. 85, no. 4, pp. 42-43.
- 8. Emmerson, J., 2000. Orbital Narrow Gap MCW Pipe Welding, Welding&Metal Fabrication, vol. 68, no. 8, pp. 9-11.
- 9. Benway, E.A., 2000. Advancements in Automatic Orbital Welding Expand Its Use, Provide Welders With More Option, Industrial Maintenance & Plant Operation, vol. 61, no. 7, pp. 22.
- 10. Latifi, H., 2012. Advanced Orbital Pipe Welding, Ms thesis, Lappeenranta University of Technology, Finland.
- 11. Harris, I.D., 2011. Welding Advances in Tube And Pipe Applications, Welding Journal, vol. 90, no. 6, pp. 58-63.
- 12. Benway, E.A., 2009. What To Look For in Orbital Welding Training Programs, Penton's Welding Magazine, vol. 82, no. 5, pp. 18-22.
- 13. POLYSOUDE, Orbital Welding Handbook, http://www.polysoude.com/orbital-welding (erişim tarihi 12 Haziran 2015).
Details
| Journal Section | Articles |
|---|---|
| Authors | |
| Publication Date | August 15, 2016 |
| Published in Issue | Year 2016 Volume: 31 Issue: ÖS1 |