Effects of precipitated phases on the magnetic properties of 2304 duplex stainless steel

Alinejad, H.; Abbasi, Majid

doi:10.1016/j.jmmm.2021.168244

Cited by 6 publications

(3 citation statements)

References 33 publications

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“…[5,6] However, achieving the excellent properties of DSS necessitates maintaining a nearly balanced δ and γ content and preventing harmful secondary-phase precipitations (e.g., γ 2 , Cr 2 N, σ, and χ phase). [7][8][9] Welding is a common fabrication process for DSS in various applications. Gas tungsten arc welding (GTAW), known for producing high-quality welds, is widely used but faces limitations due to relatively low efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Study on Microstructure and Properties of Cold Metal Transfer and Pulse Hybrid Welded Super Duplex Stainless Steel

Zhang,

He,

et al. 2024

steel research int.

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The investigation focuses on the microstructure, impact toughness, and pitting corrosion resistance of cold metal transfer and pulse hybrid welded joints of unified numbering system (UNS) S32750 duplex stainless steel. The results show that the filler pass exhibits the highest austenite ratio (47.9%), whereas the heat‐affected zone (HAZ) shows the lowest (32.3%). Notably, secondary austenite (γ2) is present in both the backing pass and HAZ, but conspicuously absent in the filler pass, indicating that reheating from subsequent weld pass is a prerequisite for the precipitation of γ2. Additionally, chromium nitride (Cr2N) also precipitates in the HAZ and backing pass. Comparative analysis with the weld metal (WM) and base metal (BM) indicates that the HAZ displays lower impact toughness, primarily attributing to imbalanced phase ratio, coarse ferrite grains and the brittle Cr2N. Owing to the lower austenite content and Cr2N precipitation in the backing pass, its toughness (122.6 J cm−2) is found to be inferior to that of the filler pass (130.1 J cm−2). Furthermore, the HAZ with a lower critical pitting temperature compared to the WM (79.1 °C) and BM (87 °C), and exhibits the worst pitting corrosion resistance due to the abundant precipitation of secondary phases and excessive ferrite with low pitting resistance equivalent number.

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Section: Introductionmentioning

confidence: 99%

“…[ 5,6 ] However, achieving the excellent properties of DSS necessitates maintaining a nearly balanced δ and γ content and preventing harmful secondary‐phase precipitations (e.g., γ 2 , Cr 2 N, σ, and χ phase). [ 7–9 ]…”

Section: Introductionmentioning

confidence: 99%

Study on Microstructure and Properties of Cold Metal Transfer and Pulse Hybrid Welded Super Duplex Stainless Steel

Zhang,

He,

et al. 2024

steel research int.

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“…Because of its strong combination of enhanced creep strength [6], oxidation resistance [7], and hot corrosion resistance [8], 316 LN austenitic stainless steel (316 LNSS) has been acknowledged as one of the optimum materials for nuclear power, biomedical, and other industries [9][10][11]. He et al [12] used tensile experiments to investigate the thermoplastic and high-temperature tensile fracture behavior of 316 LNSS at 850-1300 • C, and the results revealed that dynamic recrystallization occurred in this stainless steel during thermal deformation above 1000 • C, but the tensile fracture behavior of 316 LNSS at 750 • C was not studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of Microstructure on Mechanical Properties of 316 LN Austenitic Stainless Steel

2022

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The microstructure development of 316 LN austenitic stainless steel (316 LNSS) during the aging process is investigated in this article. The thermal aging processes were conducted at 750 °C with different periods ranging from 50 to 500 h. The metallographic results show that the coherent and incoherent twins were present in the original 316 LNSS grains, but dwindled as the aging period increased. After 50 h of aging, many fine, dispersed particles precipitated from the matrix, which were identified as M23C6 by energy dispersive spectrometer (EDS) and transmission electron microscopy (TEM). Additionally, the impact toughness and Brinell hardness (HBW) changed during the aging, which was closely related to the effects of dispersion strengthening and solution strengthening. A negatively linear relationship between Brinell hardness and Charpy impact energy was established, which could be utilized to predict the degree of thermal embrittlement.

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Post-fire Structural Properties of Hot-Rolled and Cold-Rolled Duplex Stainless Steel Reinforcing Bar

2022

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Effects of precipitated phases on the magnetic properties of 2304 duplex stainless steel

Cited by 6 publications

References 33 publications

Study on Microstructure and Properties of Cold Metal Transfer and Pulse Hybrid Welded Super Duplex Stainless Steel

Study on Microstructure and Properties of Cold Metal Transfer and Pulse Hybrid Welded Super Duplex Stainless Steel

Effect of Microstructure on Mechanical Properties of 316 LN Austenitic Stainless Steel

Post-fire Structural Properties of Hot-Rolled and Cold-Rolled Duplex Stainless Steel Reinforcing Bar

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