Weldability of Haynes 188 Cobalt Based Superalloy and AISI 316L Austenitic Stainless Steel

Samet Nohutçu; Ramazan Kaçar; Hayriye Ertek Emre

Makale detayları

Weldability of Haynes 188 Cobalt Based Superalloy and AISI 316L Austenitic Stainless Steel

Yazarlar:

Samet Nohutçu | Ramazan Kaçar | Hayriye Ertek Emre

Yayıncı:

Gazi University

Ana Başlıklar:

Mühendislik

Dergi:

Politeknik Dergisi Vol.27 Issue 3, pp.995-1004

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001323395

pISSN:

2147-9429

Anahtar kelimeler:

Özet:

 Because of their high temperature and oxidation resistance, similar and dissimilar metal welding is needed in producing gas turbine and rocket engine parts, in which cobalt-based superalloys are also used. The fusion welding methods such as gas tungsten arc welding TIG, Laser welding LW, Electron beam welding EBW, and Plasma arc welding PAW are widely used for dissimilar metals welding applications. Weld discontinuity such as solidification cracks and liquefaction cracks can occur in the weldment. One way to overcome these problems is to use a low heat input in the welding process. Force TIG welding machine, which has been developed in recent years, allows automatic welding with its integrated systems. Thus, it provides the opportunity to obtain the heat input homogeneously and to perform autogenous welding with its control of the welding parameters. The study aims to investigate the weldability of the Haynes 188  AISI 316L couple, as supplied, automatically with the Force TIG welding machine, without opening the weld groove, and without using any filler metal autogenously. For this purpose, the strength and hardness of the dissimilar welded sample were determined, and its microstructure was evaluated in detail.

 Because of their high temperature and oxidation resistance, similar and dissimilar metal welding is needed in producing gas turbine and rocket engine parts, in which cobalt-based superalloys are also used. The fusion welding methods such as gas tungsten arc welding TIG, Laser welding LW, Electron beam welding EBW, and Plasma arc welding PAW are widely used for dissimilar metals welding applications. Weld discontinuity such as solidification cracks and liquefaction cracks can occur in the weldment. One way to overcome these problems is to use a low heat input in the welding process. Force TIG welding machine, which has been developed in recent years, allows automatic welding with its integrated systems. Thus, it provides the opportunity to obtain the heat input homogeneously and to perform autogenous welding with its control of the welding parameters. The study aims to investigate the weldability of the Haynes 188  AISI 316L couple, as supplied, automatically with the Force TIG welding machine, without opening the weld groove, and without using any filler metal autogenously. For this purpose, the strength and hardness of the dissimilar welded sample were determined, and its microstructure was evaluated in detail.

 Because of their high temperature and oxidation resistance, similar and dissimilar metal welding is needed in producing gas turbine and rocket engine parts, in which cobalt-based superalloys are also used. The fusion welding methods such as gas tungsten arc welding TIG, Laser welding LW, Electron beam welding EBW, and Plasma arc welding PAW are widely used for dissimilar metals welding applications. Weld discontinuity such as solidification cracks and liquefaction cracks can occur in the weldment. One way to overcome these problems is to use a low heat input in the welding process. Force TIG welding machine, which has been developed in recent years, allows automatic welding with its integrated systems. Thus, it provides the opportunity to obtain the heat input homogeneously and to perform autogenous welding with its control of the welding parameters. The study aims to investigate the weldability of the Haynes 188  AISI 316L couple, as supplied, automatically with the Force TIG welding machine, without opening the weld groove, and without using any filler metal autogenously. For this purpose, the strength and hardness of the dissimilar welded sample were determined, and its microstructure was evaluated in detail.

 Kobalt esaslı süper esaslı süperalaşımların da kullanıldığı gaz türbini ve roket motor parçalarının üretiminde, yüksek sıcaklık ve oksidasyon dirençleri nedeniyle benzer ve benzer olmayan metallerin kaynağına ihtiyaç duyulmaktadır. Gaz tungsten ark kaynağı TIG, Lazer kaynağı LW, Elektron ışını kaynağı EBW ve Plazma ark kaynağı PAW gibi ergitme kaynak işlemleri, benzer olmayan metallerin kaynak uygulamaları için yaygın olarak kullanılmaktadır. Kaynaklı birleştirmelerde katılaşma ve sıvılaşma çatlakları gibi kaynak kusurları oluşabilir. Bu sorunların üstesinden gelmenin bir yolu, kaynak işleminde düşük ısı girdisi kullanmaktır. Son yıllarda geliştirilen Force TIG kaynak makinası entegre edildiği sistemler ile otomatik kaynak yapmaya imkân vermektedir. Böylece ısı girdisini homojen olarak elde etme ve kaynak parametreleri üzerindeki kontrolü ile otojen kaynak yapma olanağı sağlar. Çalışmada; Haynes 188-AISI 316L çiftinin tedarik edildiği şekliyle Force TIG kaynak makinesi ile otomatik olarak, kaynak ağzı açılmadan ve herhangi bir ilave metal kullanılmadan otojen olarak kaynaklanabilirliğinin araştırılması amaçlanmıştır. Bu amaçla, farklı cins malzeme kaynaklı numunenin dayanımı, sertliği belirlenmiş ve mikroyapısı detaylı olarak değerlendirilmiştir.

Makale detayları

Weldability of Haynes 188 Cobalt Based Superalloy and AISI 316L Austenitic Stainless Steel

Yazarlar:

Samet Nohutçu | Ramazan Kaçar | Hayriye Ertek Emre

Yayıncı:

Gazi University

Ana Başlıklar:

Mühendislik

Dergi:

Politeknik Dergisi Vol.27 Issue 3, pp.995-1004

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001323395

pISSN:

2147-9429

Haynes 188

AISI 316L

weldability

microstructure and mechanical propertiesHaynes 188

AISI 316L

kaynak edilebilirlik

mikroyapı ve mekanik özellikler

Sayı

Makale detayları

Yazarlar: Samet Nohutçu | Ramazan Kaçar | Hayriye Ertek Emre

Yayıncı: Gazi University

Ana Başlıklar: Mühendislik

Dergi: Politeknik Dergisi Vol.27 Issue 3, pp.995-1004

Belge Tipi: Makale

Yayın Tarihi: 7/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001323395

pISSN: 2147-9429

Sayı

Yazarlar:

Samet Nohutçu | Ramazan Kaçar | Hayriye Ertek Emre

Yayıncı:

Gazi University

Ana Başlıklar:

Mühendislik

Dergi:

Politeknik Dergisi Vol.27 Issue 3, pp.995-1004

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001323395

pISSN:

2147-9429