Influence of Pushing and Pulling the Electrode Procedure and Addition of Second Layer of Welding on the Wear in Hardfacing of Fe-Cr-C

Rauta, Romulo Poderoso; Rodrigues, Samuel Filgueiras; Leal, Valdemar Silva; Reis, Gedeon Silva; Aranas, Clodualdo; Ferraresi, Valtair Antonio

doi:10.1590/1980-5373-mr-2016-0230

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…Welding is used to join hundreds of different commercial alloys into many different forms. More than 50% of all stainless steel delivered to the world has undergone some welding process [6]. In this way, the application of this material which presents excellent mechanical and corrosion properties is essential.…”

Section: Introductionmentioning

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: Introductionmentioning

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

“…For resist-ing severe wear conditions, iron-based hardfacing alloys have been mainly used owing to their excellent wear resistance and relatively low price (Refs. [3][4][5]. Their excellent wear resistance is derived from the presence of primary Crrich carbides in the hypereutectic microstructure (Refs.…”

Section: Introductionmentioning

confidence: 99%

Development of Nickel-Added, Iron-Based, Slag-Free, Self-Shielded Metal-Cored Wire

2018

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Previously, an iron-based, slag-free, self-shielded metalcored wire showing a mechanism of porosity prevention was reported in the Welding Journal (Ref. 1). In this paper, a type of iron-based, slag-free, self-shielded metal-cored wire with various nickel contents was developed to fabricate experimental hardfacing alloys. The influence of nickel addition on the microstructure and wear performance was investigated. The results showed the hardfacing alloy with 0.13 wt-% nickel had a typical hypereutectic microstructure consisting of primary M 7 (C, B) 3 carbonitrides with a eutectic of long, bar-like M 3 (C, B) carbonitrides and martensite. The addition of nickel promoted the formation of austenite dendrites as well as changed the morphology of the eutectic colonies. As the nickel content increased from 2.75 to 3.83 wt-%, and to 4.64 wt-%, the austenite was observed to develop from a scattered structure to a dendritic structure, and, finally, to a networked structure, respectively. The hardness of the hardfacing alloy was found to decrease from 64.2 HRC with 0.13 wt-% nickel to 58.2 HRC with 4.64 wt-% nickel. The morphology of the worn surfaces of the hardfacing alloys showed cracks in the hardfacing alloy with 0.13 wt-% nickel; a smooth texture for the hardfacing alloy with 2.75 wt-% nickel; and extensive plastic deformation and grooving as the nickel content was further increased. The optimum wear resistance and cracking resistance of the 2.75 wt-% nickel hardfacing alloy can be attributed to the presence of a higher fraction of martensite in the matrix, and an optimum amount of retained austenite needed to provide crack resistance.

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Effect of Vanadium Content on Microstructure and Wear Behavior of Fe-Cr-Mn-C Surfacing Alloys

Zhuang,

Liu,

et al. 2024

J. of Materi Eng and Perform

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Influence of Pushing and Pulling the Electrode Procedure and Addition of Second Layer of Welding on the Wear in Hardfacing of Fe-Cr-C

Cited by 7 publications

References 15 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

Development of Nickel-Added, Iron-Based, Slag-Free, Self-Shielded Metal-Cored Wire

Effect of Vanadium Content on Microstructure and Wear Behavior of Fe-Cr-Mn-C Surfacing Alloys

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