The impact of heat input on the strength, toughness, microhardness, microstructure and corrosion aspects of friction welded duplex stainless steel joints

M, Mohammed Asif; Kulkarni, Anup; Sathiya, P.; Goel, Shivani

doi:10.1016/j.jmapro.2015.01.004

Cited by 63 publications

(6 citation statements)

References 21 publications

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“…Due to that, there was a decrease in the toughness and pitting corrosion resistance as consequence of grain growth and the presence of ferrite under coalescence, reducing the hardening effect [26].…”

Section: Microhardness Testsmentioning

confidence: 99%

Influence of MIG/MAG Welding Process on Mechanical and Pitting Corrosion Behaviors on the Super-Duplex Stainless Steel SAF 2507 Welded Joints

Lopes¹,

Rodrigues²,

Silva³

et al. 2018

MSA

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The main objective of this research is to better understand the correlation between the constituent phases presented in the super-duplex steel SAF 2507 when it is under welding process by arc shielding gas MIG-MAG (Metal Inert Gas-Metal Active Gas). Conventional short circuit transfer and derivative STT (Surface Tension Transfer) using the 2594 welding wire as a filler metal and the effects on welding power in hardness, toughness and pitting corrosion are considered here. The results showed that the welding energy (Ew) changed the α/γ-phase's balance and occasionally formed σ-phase in ferrite grain boundaries which led to changes in hardness, toughness and pitting corrosion resistance in molten zone (MZ), heat activated zone (HAZ) and metal base regions (MB). Furthermore, the increased amount of γ-phase improved the pitting corrosion resistance index (PRENγ) mainly in the MZ. This is due to decrease of α-phase fraction and formation of coarser grains, for higher welding energy. The toughness in the MZ decreased with less formation of γ-phase, coalescence of ferritic grains and localized formation of σ-phase, raising the hardness in the HAZ when the welding energy was lower.

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Section: Microhardness Testsmentioning

confidence: 99%

Influence of MIG/MAG Welding Process on Mechanical and Pitting Corrosion Behaviors on the Super-Duplex Stainless Steel SAF 2507 Welded Joints

Lopes¹,

Rodrigues²,

Silva³

et al. 2018

MSA

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show abstract

“…Thermal input is the most important variable in any definition of properly welded stainless steel, a fact that has been confirmed in multiple studies, including those by Mohammed et al, which concluded that DSS steel 2205 tolerated a higher thermal input than austenitic steels [16], and by Asif et al, which concluded that duplex 2205 stainless steel performed better with a higher thermal input than austenitic steels [17]. Likewise, Tasalloti et al concluded that lower heat inputs, also for DSS 2205, produced a great disparity in its composition (i.e., Cr, Ni and Mo) [18].…”

mentioning

confidence: 88%

“…Besides, it is noteworthy that prolonged thermal inputs can improve the performance of welds [19]. Additionally, Asif et al [17] underlined how lower inputs imply higher fractions of ferrite and severe precipitation of chromium nitrides; this implies a degradation of mechanical properties and corrosion resistance, such as chloride pitting corrosion, typical of marine environments.…”

mentioning

confidence: 99%

The Weldability of Duplex Stainless-Steel in Structural Components to Withstand Corrosive Marine Environments

Calderon-Uriszar-Aldaca

Briz

García

et al. 2020

Metals

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There is still a considerable gap in the definition of the weldability of Duplex Stainless Steel (DSS). A lack of clarity that is explained by the standard specification of the maximum content of equivalent carbon that defines a “weldable” steel coupled with the fact that the alloying elements of DSS exceed this defined limit of weldability. In this paper, welding quality in an inert environment and in presence of chlorides is analyzed with the aim of defining optimum welding conditions of 2001, 2304, and 2205 DSS. The same procedure is followed for a hybrid weld between DSS 2205 and a low carbon mild steel, S275JR. As main output, this study defined the optimal welding conditions with tungsten inert gas without filler for each type of DSS weld that showed excellent anti-corrosion performance, with the exception of the DSS 2205-S275JR weld where widespread corrosion was observed. Additionally, this study established a relationship between the thermal input during welding and the content of alloying elements in defect-free joints. Furthermore, it demonstrated that an increase in ferrite content did not lead to a worse corrosion resistance, as expected after passivation.

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“…It is well known that welding is an effective and safe joining method. However, conventional fusion welding processes require a significant amount of time and easily result in joint defects [5]. Rotary friction welding (RFW) is a solid welding process that can lead to high-quality welds between two components with lower defect formation [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni interlayer on the microstructure, mechanical and corrosion properties of the dissimilar 1MnCrMoNi/X70 steels friction welding joint

Nie

Wang

et al. 2022

Science and Technology of Welding and Joining

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Pure Ni was employed as an intermediate interlayer in the dissimilar 1MnCrMoNi/X70 steels friction welding joint. The effect of the Ni interlayer on the microstructure, mechanical and corrosion properties of the joint was investigated. Compared with the Ni-free joint, the joint with the Ni interlayer had coarser microstructure and lower microhardness. Furthermore, the weld zone of the 1MnCrMoNi steel was abnormally harder than the adjacent thermo-mechanically affected zone. The tensile strength of the joint with the Ni interlayer was improved, and this joint also demonstrated a lower yield ratio, equivalent impact toughness, and enhanced corrosion resistance.

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The impact of heat input on the strength, toughness, microhardness, microstructure and corrosion aspects of friction welded duplex stainless steel joints

Cited by 63 publications

References 21 publications

Influence of MIG/MAG Welding Process on Mechanical and Pitting Corrosion Behaviors on the Super-Duplex Stainless Steel SAF 2507 Welded Joints

Influence of MIG/MAG Welding Process on Mechanical and Pitting Corrosion Behaviors on the Super-Duplex Stainless Steel SAF 2507 Welded Joints

The Weldability of Duplex Stainless-Steel in Structural Components to Withstand Corrosive Marine Environments

Effect of Ni interlayer on the microstructure, mechanical and corrosion properties of the dissimilar 1MnCrMoNi/X70 steels friction welding joint

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