Influence of Microstructural Changes on Impact Toughness of Weldment and Base Metal of Duplex Stainless Steel AISI 2205 for Low Temperature Applications

Jebaraj, A. Vinoth; Ajaykumar, L.

doi:10.1016/j.proeng.2013.09.119

Cited by 30 publications

(8 citation statements)

References 9 publications

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“…In addition to austenite and ferrite, other phases may occur depending on the thermal history of the steel, when DSS is exposed to a temperature range of 300 to 1000 • C [65][66][67][68]. Examples of such phases are chromium nitrides, carbides, or carbonitride, as well as gamma-phase, chi-phase, R-phase, alpha-prime precipitation, [69][70][71][72], alpha precipitation, copper precipitates, and martensite in gamma phase. Generally, the formation of secondary phases influences the corrosion resistance and mechanical properties [73].…”

Section: Precipitation Of Other Phasesmentioning

confidence: 99%

Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review

Mohammed

Ishak

Aqida

et al. 2017

Metals

105

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Abstract:The effects of input heat of different welding processes on the microstructure, corrosion, and mechanical characteristics of welded duplex stainless steel (DSS) are reviewed. Austenitic stainless steel (ASS) is welded using low-heat inputs. However, owing to differences in the physical metallurgy between ASS and DSS, low-heat inputs should be avoided for DSS. This review highlights the differences in solidification mode and transformation characteristics between ASS and DSS with regard to the heat input in welding processes. Specifically, many studies about the effects of heat energy input in welding process on the pitting corrosion, intergranular stress, stress-corrosion cracking, and mechanical properties of weldments of DSS are reviewed.

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Section: Precipitation Of Other Phasesmentioning

confidence: 99%

Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review

Mohammed

Ishak

Aqida

et al. 2017

Metals

105

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“…Gunn 26 and Karlsson et al 27 already had reached these results in their DSS studies. It was observed small amount of particles of transgranular austenite (IGA), because IGA requires more driving force to nucleate inside the grains 28 . During cooling cycle, transformation of austenite phases was sufficient in MZ to satisfy the duplex criteria due to rapid cooling achieved which ensures mechanical properties.…”

Section: Kn Microstructuresmentioning

confidence: 99%

Microstructural behavior of SAF 2205 Duplex Stainless Steel Welded by Friction Hydro Pillar Processing

et al. 2016

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The Friction Hydro-Pillar Process (FHPP) is an innovative process that has been recently studied regarding its possible in situ repair applications. There is still no literature about usage of the FHPP on duplex stainless steel (DSS) base materials to smaller forces than 25 kN. The investigation on DSS processing is crucial due his wide variety of critical uses in pipes and storage structures applied in chemical industry plants, where usual welding processes may lead to safety concerns. The aim of this study is to qualify the processing of SAF 2205 (UNS 31803) duplex stainless steel welded joints using FHPP as feasible repair procedure. For this, the studied samples were welded applying a range of axial forces. The welded joints were characterized by, α/γ phase ratio, intermetallic quantification, austenite spacing measurement, microhardness profile and microstructural qualitative studies. The results showed the efficiency in repair of the FHPP process on the production of DSS joints according with the material recommendations from the standard DNV-RP-F112.

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“…14, it is clear that the hardness for the welded materials is higher near the interface when compared to PDZ. This is due to the strain hardening effect during the friction process at the interface [17]. The hardness of the heat affected zones were found to be lower than the base material in all the experiments.…”

Section: Microhardnessmentioning

confidence: 81%

Finite element modelling and characterization of friction welding on UNS S31803 duplex stainless steel joints

Shrikrishana

Sathiya

2015

Engineering Science and Technology, an International Journal

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a b s t r a c tSolid state joining techniques are increasingly employed in joining duplex stainless steel materials due to their high integrity. Continuous drive friction welding is a solid state welding technique which is used to join similar and dissimilar materials. This joining technique is characterized by short cycle time, low heat input and narrow heat affected zones. The simulation becomes an important tool in friction welding because of short welding cycle. In the present work, a three dimensional non-linear finite element model was developed. The thermal history and axial shortening profiles were predicted using ANSYS, a software tool. This numerical model was validated using experimental results. The results show that the frictional heating stage of the process has more influence on temperature and upsetting stage has more impact on axial shortening. The knowledge of these parameters would lead to optimization of input parameters and improvement of design and machine tools.

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Influence of Microstructural Changes on Impact Toughness of Weldment and Base Metal of Duplex Stainless Steel AISI 2205 for Low Temperature Applications

Cited by 30 publications

References 9 publications

Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review

Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review

Microstructural behavior of SAF 2205 Duplex Stainless Steel Welded by Friction Hydro Pillar Processing

Finite element modelling and characterization of friction welding on UNS S31803 duplex stainless steel joints

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