Characterization of microstructure, chemical composition, and toughness of a multipass welded joint of austenitic stainless steel AISI316L

Tümer, Mustafa; Yilmaz, Ramazan

doi:10.1007/s00170-016-8614-4

Cited by 29 publications

(5 citation statements)

References 27 publications

(49 reference statements)

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“…Such information is decisive for guiding the correct choice of welding parameters (heat input, travel speed, etc.) to be applied in order to increase the quality of weldment and, consequently, the performance of materials used in process equipment manufacturing [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Influence of the heat input and aging treatment on microstructure and mechanical properties of AISI 317 L steel weldments using 0020 robotic–pulsed GMAW

Antunes

Silva

Corrêa

et al. 2019

Int J Adv Manuf Technol

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In this work, the effect of heat input and aging treatment on the microstructural characteristics and mechanical properties of similar AISI 317L austenitic stainless steel weldments used in the petroleum industry was investigated. The filler metal used was the AWS ER317L electrode at two different heat input levels (4 and 8 kJ/cm) in order to verify the influence of this parameter on the precipitation of deleterious phases. The specimens were aged at 700 °C for 50 and 100 h. Quantification and microchemical mapping of precipitated phases after welding and aging thermal treatment (ATT) were performed. Vickers hardness and tensile tests were used to evaluate the mechanical properties. It was observed that aging promoted a refinement of the base metal region, and all delta ferrite was transformed into sigma phase. The delta ferrite present in the fusion zone was completely transformed into sigma and chi phases. In the aged specimens for 100 h a lower occurrence of the secondary austenite phase (γ2) was identified, which indicates that with the increase of ATT time the dissolution of γ2 occurred in the already precipitated sigma phase. All welding conditions showed an increase in tensile strength, yield limit and hardness with the ATT.

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Section: Introductionmentioning

confidence: 99%

Influence of the heat input and aging treatment on microstructure and mechanical properties of AISI 317 L steel weldments using 0020 robotic–pulsed GMAW

Antunes

Silva

Corrêa

et al. 2019

Int J Adv Manuf Technol

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“…Östenit fazının kristal kafes yapısının yüzey merkez kübik ve darbe tokluğunun sıcaklıktan bağımsız olması düşük sıcaklıklarda bile tokluğun yüksek olmasına neden olmuştur. Bu malzemelerin kaynak metali içerisinde bulunan az miktardaki δ-delta ferrit fazı (hacim merkez kübik yapılı) sıcaklığa bağlı olarak tokluk değerlerinde değişim göstermekte ve düşük sıcaklıklarda gevrek davranış sergilemektedir [28]. EAK birleştirmelere kıyasla GMAK birleştirmelerin tokluğu daha yüksek bulunmuştur.…”

Section: Birleştirmelerin Sertlik öLçümü (Hardness Measurement Of Welunclassified

Hardoks400-Aisi304 Çeli̇k Çi̇fti̇ni̇n Elektri̇k Ark Ve Mag Kaynaği

Kaçar¹,

Emre²,

Işineri³

et al. 2018

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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“…Generally, it is well known that the strengthening properties of austenitic stainless steels are strongly affected by the chemical composition and microstructural features [43,44]. Moreover, it is also known that the conventional hardening and tempering treatments that is typically used to improve the mechanical performances of other steel grades (such as ferritic-martensitic [45,46] or maraging steels [47]) are not effective on austenitic stainless steels.…”

Section: Introductionmentioning

confidence: 99%

Recrystallization and Grain Growth of AISI 904L Super-Austenitic Stainless Steel: A Multivariate Regression Approach

Stornelli

Gaggiotti

Mancini

et al. 2022

Metals

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AISI 904L is a super-austenitic stainless steel that is remarkable for its mechanical properties and high corrosion resistance, which strictly depend on its chemical composition and microstructural features. The recrystallization process and grain growth phenomena play key roles in achieving high levels of material quality, as often requested by customers for specific applications. In this paper, the evolution of the microstructure and hardness values after cold rolling and subsequent annealing is reported, with the aim of optimizing the thermomechanical treatment conditions and improving the efficiency of the production process. The investigation was focused on three different cold reduction ratios (50%, 70% and 80%), while combining different annealing temperatures (950, 1050 and 1150 °C) and soaking times (in the range of 20–180 s. The test results were organized using a data analysis and statistical tool, which was able to show the correlation between the different variables and the impacts of these on recrystallization and grain growth processes. For low treatment temperatures, the tested soaking times led to partial recrystallization, making this condition industrially unattractive. Instead, for the higher temperature, full recrystallization was achieved over a short time (20–40 s), depending on the reduction ratio. Regarding the grain growth behavior, it was found to be independent of the reduction ratio; for each treatment temperature, the grain growth showed a linear trend as a function of the soaking time only. Moreover, the static recrystallization kinetics were analyzed using a statistical analysis software program that was able to provide evidence indicating the most and least influential parameters in the process. In particular, taking into consideration the hardness values as output data, the temperature and soaking time were revealed to have major effects as compared with the reduction ratio, which was excluded from the statistical analysis. The prediction approach allowed us to formulate a regression equation in order to correlate the response and terms. Moreover, a response optimizer was used to predict the best solution to get as close as possible to the hardness target required by the market.

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Characterization of microstructure, chemical composition, and toughness of a multipass welded joint of austenitic stainless steel AISI316L

Cited by 29 publications

References 27 publications

Influence of the heat input and aging treatment on microstructure and mechanical properties of AISI 317 L steel weldments using 0020 robotic–pulsed GMAW

Influence of the heat input and aging treatment on microstructure and mechanical properties of AISI 317 L steel weldments using 0020 robotic–pulsed GMAW

Hardoks400-Aisi304 Çeli̇k Çi̇fti̇ni̇n Elektri̇k Ark Ve Mag Kaynaği

Recrystallization and Grain Growth of AISI 904L Super-Austenitic Stainless Steel: A Multivariate Regression Approach

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