Guidelines for Specification and Measurement of Ferrite in Austenitic Stainless Steel Weld Metal

Kotecki, D. J.

doi:10.22486/iwj.v19i1.148424

Cited by 7 publications

(9 citation statements)

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“…It is used by several steel suppliers and is named in ASTM A240 as UNS S41003 and in European Standards as Material Number 1.4003. 3Cr12 is generally used by several steel suppliers and it has good corrosion resistance in many environments and provides considerable economic advantage over austenitic stainless steels [25][26][27]. In high purity Fe-Cr systems, the gamma loop extends as far as about 13.5% Cr, after which the structure is fully ferritic at all temperatures.…”

Section: Introductionmentioning

confidence: 99%

Laser welding of modified 12% Cr stainless steel: Strength, fatigue, toughness, microstructure and corrosion properties

et al. 2009

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Section: Introductionmentioning

confidence: 99%

Laser welding of modified 12% Cr stainless steel: Strength, fatigue, toughness, microstructure and corrosion properties

et al. 2009

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“…Kotecki et al 17 got the crack sensitivity curve of austenitic stainless steel through summarising a large number of experimental data, as shown in Fig. 6.…”

Section: Microstructure Of Weldsmentioning

confidence: 99%

Influence of deep cryogenic treatment on the microstructure and properties of AISI304 austenitic stainless steel A-TIG weld

Cai

Luo

Zeng

2017

Science and Technology of Welding and Joining

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Appropriate deep cryogenic treatment can improve comprehensive mechanical properties of the AISI304 austenitic stainless steel activating flux tungsten inert gas (A-TIG) welds. The microstructure of the welds before and after deep cryogenic treatment was all austenite with a small amount of δ-ferrite. The vermiform ferrite + austenite distributed in the whole weld, but the lath-shaped ferrite + austenite mixed components only distributed in the centre of the weld. The phases in the two welds were all Cr-Ni-Fe-C and Fe-Ni solid solutions, ferric carbide (i.e. Fe 3 C) and chromic carbides (i.e. Cr 23 C 6 and Cr 7 C 3 ). After deep cryogenic treatment, the grain size of the weld was decreased a certain of degree, and the carbide phase content was increased. The strength and micro-hardness of the weld joints were increased due to the grain refinement. The intergranular corrosion resistance of the weld was reduced because the precipitation of chromium carbides at the austenite grain boundary.

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“…Ferritometers are scaled on standards in the range of 3-28 FN, which is sufficient to evaluate austenitic weld metals. For higher ferrite contents, an extended ferrite number EFN was introduced, which is a continuation of the FN scale [14].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Various Welding Methods on the Microstructure and Mechanical Properties of 316Ti Steel

Noga,

Skrzekut,

Wędrychowicz

et al. 2024

Materials

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Austenitic stainless steels are very popular due to their high strength properties, ductility, excellent corrosion resistance and work hardening. This paper presents the test results for joining AISI 316Ti austenitic steel. The technologies used for joining were the most popular welding techniques such as TIG (welding with a non-consumable electrode in the shield of inert gases), MIG (welding with a consumable electrode in the shield of inert gases) as well as high-energy EBW welding (Electron Beam Welding) and plasma PAW (plasma welding). Microstructural examinations in the face, center and root areas of the weld revealed different contents of delta ferrite with skeletal or lathy ferrite morphology. Additionally, the presence of columnar grains at the fusion line and equiaxed grains in the center of the welds was found. Microstructural, X-ray and ferroscope tests showed the presence of different delta ferrite contents depending on the technology used. The highest content of delta ferrite was found in the TIG and PAW connectors, approximately 5%, and the lowest in the EBW connector, approximately 2%. Based on the tests carried out on the mechanical properties, it was found that the highest properties were achieved by the MIG joint (Rm, 616, Rp0.2 = 335 MPa), while the lowest were achieved by the PAW joint (Rm = 576, Rp0.2 = 315 MPa).

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Guidelines for Specification and Measurement of Ferrite in Austenitic Stainless Steel Weld Metal

Cited by 7 publications

References 0 publications

Laser welding of modified 12% Cr stainless steel: Strength, fatigue, toughness, microstructure and corrosion properties

Laser welding of modified 12% Cr stainless steel: Strength, fatigue, toughness, microstructure and corrosion properties

Influence of deep cryogenic treatment on the microstructure and properties of AISI304 austenitic stainless steel A-TIG weld

The Influence of Various Welding Methods on the Microstructure and Mechanical Properties of 316Ti Steel

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