Investigation on the resistance spot-welded austenitic/ferritic stainless steel

Bina, Mohammad Hosein; Jamali, Mostafa; Shamanian, M.; Sabet, H.

doi:10.1007/s00170-014-6220-x

Cited by 28 publications

(11 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Deneylerde kullanılan malzemenin kimyasal bileşimi Tablo 1' de, numunelerinin boyutları ve kaynak noktasının pozisyonu Şekil 1' de verilmiştir. Maksimum mafsal mukavemeti ve kabul edilebilir mukavemet üreten yeterli kaynak akımı 3.75 kA'da kurulmuştur [7].…”

Section: Malzeme [Material]unclassified

Aısı 304 Paslanmaz Çeliğin Direnç Kaynağında Birleşimin Mekanik Özelliklerine Soğuma Hızının Etkisi

Arabaci

Özçatalbaş

Kuştutan³

2018

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

View full text Add to dashboard Cite

AISI 304 paslanmaz çelik saclar özellikle otomotiv, kimya ve gıda endüstrisinde yaygın olarak kullanılmaktadır. Bu malzemenin birleştirilmesinde ise genellikle nota direnç kaynağı kullanılır.Direnç kaynağı sonrasında kullanılan farklı soğutma ortamları, birleştirmenin mekanik özelliklerinde farklılık meydana getirmektedir. Bu çalışmada, AISI 304 paslanmaz çeliğin nokta direnç kaynağındaki akım şiddeti ve soğutma ortamının, birleştirmenin mekanik özelliklerine ve mikro yapısına etkisi araştırılmıştır. Üç farklı akım şiddeti ve soğutma ortamında yapılan birleştirme numunelerinin üzerinde çekme-makaslama ve sertlik deneyleri yapılmıştır.Birleştirmede oluşan çekirdek morfolojisi ve mikro yapı incelenmiştir. Uygun birleştirme özellikleri, 7,5 kA akımında ve hava soğutmalı ortamda sağlanmıştır. Artan akım şiddetiyle çekme-makaslama dayanımı da artmasına rağmen birleştirme aşırı deforme olmuş ve fışkırma meydana gelmiştir.

show abstract

Section: Malzeme [Material]unclassified

Aısı 304 Paslanmaz Çeliğin Direnç Kaynağında Birleşimin Mekanik Özelliklerine Soğuma Hızının Etkisi

Arabaci

Özçatalbaş

Kuştutan³

2018

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

View full text Add to dashboard Cite

show abstract

“…Bina et al. 16 reported that an increasing weld current for RSW joints of AISI430/AISI304 SS enlarged the weldment strength weld nugget dimension. Essoussi et al.…”

Section: Introductionmentioning

confidence: 99%

Influence of resistance spot welding process parameters on dissimilar austenitic and duplex stainless steel welded joints

Krishnan

Elayaperumal

Paramasivam

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

This paper examines the impact of welding parameters on tensile shear fracture load, nugget geometry and microstructure of resistance spot welds (RSW) of austenitic stainless steel AISI 316 L and duplex stainless steel 2205 under lap shear loading condition. The macroscopic examination resulted that many of the nugget lengths were nearer to and higher than the AWS recommended value 4√t and failed at higher tensile shear load. Nugget height for DSS 2205 side was higher in comparison with AISI 316 L due to higher thermal conductivity of duplex stainless steel. Three welding parameters mainly welding current of 9 kA, heating cycle of 9 and electrode tip diameter of 6 mm were discovered as most effectual parameters on the tensile shear load and microstructure of weldments. Heterogeneous hardness was observed in the fusion zone due to the transition of equiaxed to columnar grains takes place in the both sides of nugget edge. DSS HAZ nearby BM observed higher hardness and ASS HAZ nearby BM reported lower hardness. WMZ Microstructure confirmed that thickness of austenite layers increased with heat input. Also, an unmixed zone in the microstructure identified as HAZ which contains delta ferrite. Scanning Electron Microscope (SEM) images in the nugget zone for different welding parameters confirmed that Intra-Granular Austenite (IGA) highly developed at higher welding current. SEM fractrograph for the tensile sheared specimens at higher and lower heat input confirmed the ductile type fracture even failed at Inter-Facial (IF) mode. Nugget area and nugget hardness were positively correlated with Tensile Shear Fracture Load (TSFL).

show abstract

“…Vignesh et al [12] proposed the optimal RSW welding parameters for AISI316L/2205 duplex stainless steels and reported the presence of ferrite in the heat affected zone of both materials. Bina et al [13] reported that an elevated weld current for RSW of AISI430/AISI304 stainless steels increased the weld nugget dimension and weldment strength. The weldment however suffered from the pullout failure mode.…”

Section: Introductionmentioning

confidence: 99%

Resistance Spot Welding of SUS316L Austenitic/SUS425 Ferritic Stainless Steels: Weldment Characteristics, Mechanical Properties, Phase Transformation and Solidification

Khuenkaew

Kanlayasiri

2019

Metals

View full text Add to dashboard Cite

This research examines the weldment characteristics and mechanical properties of lap joints of SUS316L/SUS425 stainless steels using resistance spot welding under variable weld currents and welding times. The weld current was varied between 7.0, 8.5, and 10.0 kA, and the welding time between 25, 38, and 50 cycles. The weldment quality characteristics under study were the depth of fusions, indentation depths, and nugget diameter, and the mechanical properties included the tensile shear force (TSF) and micro Vickers hardness. Phase transformation and solidification were characterized using scanning electron microscopy and energy dispersive X-ray spectrometry, together with Schaeffler and pseudo-binary predictive phase diagrams. The results revealed that the weldment quality was positively correlated with weld current and welding time, as were the TSF and micro hardness. The optimal welding condition was achieved under a 10.0 kA weld current and 25-cycle welding time. Under the optimal condition, the fusion zone exhibited compression-direction columnar grains consisting of austenite, ferrite, and martensite and the solidification was of ferrite plus Widmanstatten austenite.

show abstract

Investigation on the resistance spot-welded austenitic/ferritic stainless steel

Cited by 28 publications

References 15 publications

Aısı 304 Paslanmaz Çeliğin Direnç Kaynağında Birleşimin Mekanik Özelliklerine Soğuma Hızının Etkisi

Aısı 304 Paslanmaz Çeliğin Direnç Kaynağında Birleşimin Mekanik Özelliklerine Soğuma Hızının Etkisi

Influence of resistance spot welding process parameters on dissimilar austenitic and duplex stainless steel welded joints

Resistance Spot Welding of SUS316L Austenitic/SUS425 Ferritic Stainless Steels: Weldment Characteristics, Mechanical Properties, Phase Transformation and Solidification

Contact Info

Product

Resources

About