Effect of high temperature ageing on microstructure and mechanical properties of a nickel-free high nitrogen austenitic stainless steel

Karthik, B M; Veerababu, R.; Sundararaman, M.; Satyanarayana, D.V.V.

doi:10.1016/j.msea.2015.07.011

Cited by 45 publications

(7 citation statements)

References 22 publications

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“…3) Therefore, HNS possesses great potential to take place of the widely used 304 or 316 austenitic stainless steels for application in many fields, such as biomedicine, automobile parts, ocean engineering, energy, chemical and military industries. 4,5) However, welding and joining is an important issue during the process of industrial application of HNS.…”

Section: Introductionmentioning

confidence: 99%

Effect of Brazing Temperature on Microstructure and Mechanical Property of High Nitrogen Austenitic Stainless Steel Joints Brazed with Ni–Cr–P Filler

et al. 2019

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In this study, Ni-Cr-P filler was used for vacuum brazing of high nitrogen austenitic stainless steels (HNS). The microstructure and shear strength of HNS joints were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction analysis (XRD) and universal testing machine. The results exhibit that Cr 2 N compounds are formed at the HNS/filler interface when the brazing temperature is lower than 1 000°C. The brazing seam is composed of Ni-Fe solid solution and (Ni, Cr) 3 P compounds, and the content of (Ni, Cr) 3 P compounds decrease with the increasing of brazing temperature. The formation of Cr 2 N and (Ni, Cr) 3 P compounds is adverse to the joint strength due to their brittleness. The optimal shear strength of joints is 163 MPa when the brazing temperature is 1 050°C.

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Section: Introductionmentioning

confidence: 99%

Effect of Brazing Temperature on Microstructure and Mechanical Property of High Nitrogen Austenitic Stainless Steel Joints Brazed with Ni–Cr–P Filler

et al. 2019

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“…The excellent properties of HNAS are damaged by nitride precipitation during thermal progress such as hot forming, heat treatment, and welding, etc. [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

First-Principles Study on the Structural Stability and Segregation Behavior of γ-Fe/Cr2N Interface with Alloying Additives M (M = Mn, V, Ti, Mo, and Ni)

Huang

Zhang

Liu

et al. 2016

Metals

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“…Furthermore, previous studies [4] indicated that improved nitrogen content restrains the precipitation of M23C6 and increases the fraction of twins, and this in turn leads to high intergranular corrosion resistance of stainless steel containing nitrogen. High-nitrogen austenitic stainless steel (HNASS) consists of nitrogen exceeding 0.4 wt%, and it is used in the chemical industry and marine environment due to its high corrosion resistance [5][6][7]. However, welding of HNASS results in the loss of nitrogen and formation of nitrogen porosities.…”

Section: Introductionmentioning

confidence: 99%

Effect of heat input on microstructure and corrosion resistance of high-nitrogen austenitic stainless steel welded joints

Jia

Zhang

et al. 2023

J. Phys.: Conf. Ser.

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In this study, the microstructure and corrosion resistance of high-nitrogen austenitic stainless steel welded joints with different heat inputs were investigated. A high heat input leads to a large width and depth of the fusion pool and a low fraction of δ-ferrite in the weld sea. However, a high fraction of Cr-rich precipitates is formed under a high heat input and low heat promotes the formation of δ-ferrite. Therefore, following corrosion tests, the weld seam suffers severe intergranular corrosion under high heat input and low heat input, and the corrosion resistance of the weld is the highest at a heat input of 6.8 kJ/cm. A high heat input results in a high fraction of Cr-rich precipitates and a random boundary in the heat affected zone (HAZ), which decreases corrosion resistance. Furthermore, corrosion test results indicate that the Cr-depleted area and random boundary are initially corroded, and high heat input decreases corrosion resistance of the HAZ.

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Effect of high temperature ageing on microstructure and mechanical properties of a nickel-free high nitrogen austenitic stainless steel

Cited by 45 publications

References 22 publications

Effect of Brazing Temperature on Microstructure and Mechanical Property of High Nitrogen Austenitic Stainless Steel Joints Brazed with Ni–Cr–P Filler

Effect of Brazing Temperature on Microstructure and Mechanical Property of High Nitrogen Austenitic Stainless Steel Joints Brazed with Ni–Cr–P Filler

First-Principles Study on the Structural Stability and Segregation Behavior of γ-Fe/Cr2N Interface with Alloying Additives M (M = Mn, V, Ti, Mo, and Ni)

Effect of heat input on microstructure and corrosion resistance of high-nitrogen austenitic stainless steel welded joints

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