Microstructure, Corrosion and Magnetic Behavior of an Aged Dual-Phase Stainless Steel

Ziouche, A.; Haddad, Ahmed; Badji, Riad; Zergoug, M.; Zoubiri, N.; Bedjaoui, W.; Abaidia, S.E.H.

doi:10.1007/s11665-018-3222-0

Cited by 8 publications

(4 citation statements)

References 35 publications

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“…The chemical composition of the  phase obtained here (% Cr = 29, % Mo = 9.03, % Ni = 4.03, % Mn = 1.41, % Si = 0.99) is in good agreement with other results published elsewhere [31]. The mechanism of the  phase formation, its kinetics and its effect on the mechanical behavior of DSS were previously investigated in other papers [31,35]. Fig 5(a-i) shows the EBSD orientation maps obtained after hot forging at 4 different temperatures and Table 3 gathers the quantitative data concerning the grain boundaries extracted from these maps (percentages of LAGBs, HAGBs, average GAM and area occupied by grains associated with a GAM value less than 1°).…”

Section: The Expected Recrystallization Mechanisms and Resulting Textsupporting

confidence: 92%

Microstructure, Mechanical Behavior and Crystallographic Texture in a Hot Forged Dual Phase Stainless Steel.

Badji

Cheniti

Kahloun

et al. 2021

Preprint

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In this work, the hot forging behavior of a dual phase stainless steel in the temperature range of 850 – 1250 °C was investigated. The study revealed the occurrence of a significant cracking phenomenon for processing temperatures below 950 °C that was attributed to the combined effect of intermetallic precipitation and severe deformation. EBSD examination highlighted the occurrence of continuous dynamic recrystallization in both ferrite and austenite microstructures for processing temperatures above 1050 °C. Increasing the hot forging temperature to 1250 °C increased the low angle grain boundaries fraction and lowered the one of the high angle grain boundaries. This was accompanied by a gradual change in the crystallographic texture of the material. The mechanical behavior investigation showed that the steel plasticity, sharply dropped after forging at 850°, was gradually recovered after hot forging at temperatures above 1050°C. This was confirmed by nanoindentation measurements that revealed a remarkable increase of the hardness and young modulus of the steel after hot forging at 850°C and 950°C due to the dislocation nucleation and the s phase precipitation at g/δ interface. The enhancement of dislocation movement at the vicinity of the grain boundaries due to the absence of s phase as well as the dynamic recovery and recrystallization occurring in the temperature range of 1050°C - 1250 °C improved the global mechanical properties of the hot forged steel.

show abstract

Section: The Expected Recrystallization Mechanisms and Resulting Textsupporting

confidence: 92%

Microstructure, Mechanical Behavior and Crystallographic Texture in a Hot Forged Dual Phase Stainless Steel.

Badji

Cheniti

Kahloun

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The chemical composition of the  phase obtained here (% Cr = 29, % Mo = 9.03, % Ni = 4.03, % Mn = 1.41, % Si = 0.99) is in good agreement with other results published elsewhere [31]. The mechanism of the  phase formation, its kinetics and its effect on the mechanical behavior of DSS were previously investigated in other papers [31,35]. 3 gathers the quantitative data concerning the grain boundaries extracted from these maps (percentages of LAGBs, HAGBs, average GAM and area occupied by grains associated with a GAM value less than 1°).…”

Section: Effect Of Hot Forging On the Microstructure And Crystallographic Texture Evolutionsupporting

confidence: 92%

“…The EDS analysis of these precipitates confirmed their correspondence to the well-known  phase. The chemical composition of the  phase obtained here (% Cr = 29, % Mo = 9.03, % Ni = 4.03, % Mn = 1.41, % Si = 0.99) is in good agreement with other results published elsewhere [31]. The mechanism of the  phase formation, its kinetics and its effect on the mechanical behavior of DSS were previously investigated in other papers [31,35].…”

Section: Effect Of Hot Forging On the Microstructure And Crystallographic Texture Evolutionsupporting

confidence: 91%

“…This phase precipitates within the δ ferrite through the diffusion of chromium and molybdenum elements known as  forming elements [31]. Table 2 displays the various microstructural parameters obtained from X-ray data analysis through a Rietveld refinement analysis conducted using the MAUD software [32].…”

Section: Effect Of Hot Forging On the Microstructure And Crystallographic Texture Evolutionmentioning

confidence: 99%

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Microstructure, mechanical behavior, and crystallographic texture in a hot forged dual-phase stainless steel

Badji

Cheniti

Kahloun

et al. 2021

Int J Adv Manuf Technol

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In this work, the hot forging behavior of a dual phase stainless steel in the temperature range of 850 -1250 °C was investigated. The study revealed the occurrence of a significant cracking phenomenon for processing temperatures below 950 °C that was attributed to the combined effect of intermetallic precipitation and severe deformation. EBSD examination highlighted the occurrence of continuous dynamic recrystallization in both ferrite and austenite microstructures for processing temperatures above 1050 °C. Increasing the hot forging temperature to 1250 °C increased the low angle grain boundaries fraction and lowered the one of the high angle grain boundaries. This was accompanied by a gradual change in the crystallographic texture of the material. The mechanical behavior investigation showed that the steel plasticity, sharply dropped after forging at 850°, was gradually recovered after hot forging at temperatures above 1050°C. This was confirmed by nanoindentation measurements that revealed a remarkable increase of the hardness and young modulus of the steel after hot forging at 850°C and 950°C due to the dislocation nucleation and the  phase precipitation at /δ interface. The enhancement of dislocation movement at the vicinity of the grain boundaries due to the absence of  phase as well as the dynamic recovery and recrystallization occurring in the temperature range of 1050°C -1250 °C improved the global mechanical properties of the hot forged steel.

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Effect of high-temperature oxidation on the subsurface microstructure and magnetic property of medium manganese austenitic steel

Zhao

et al. 2022

Journal of Alloys and Compounds

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Microstructure, Corrosion and Magnetic Behavior of an Aged Dual-Phase Stainless Steel

Cited by 8 publications

References 35 publications

Microstructure, Mechanical Behavior and Crystallographic Texture in a Hot Forged Dual Phase Stainless Steel.

Microstructure, Mechanical Behavior and Crystallographic Texture in a Hot Forged Dual Phase Stainless Steel.

Microstructure, mechanical behavior, and crystallographic texture in a hot forged dual-phase stainless steel

Effect of high-temperature oxidation on the subsurface microstructure and magnetic property of medium manganese austenitic steel

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