Comparison between symmetric and asymmetric hot rolling techniques performed on duplex stainless steel 2205

Mapelli, Carlo; Barella, Silvia; Mombelli, Davide; Baldizzone, Claudio; Gruttadauria, Andrea

doi:10.1007/s12289-011-1089-9

Cited by 11 publications

(3 citation statements)

References 13 publications

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“…is property is desirable for applications in which high draw ability is required [11,18,19,26]. e formation of a large number of high angle grain boundaries at the highest rolling temperature and a rolling reduction of 30% indicates the occurrence of the recrystallization phenomenon, which is consistent with the equiaxed and re ned grains observed in Figure 3.…”

Section: Microstructure and Crystallographic Texturesupporting

confidence: 69%

The Influence of Thermomechanical Processing Conditions on the Evolution of Microstructure and Crystallographic Textures and the Mechanical Properties of Deformed Mild Steels in the Intercritical Region

Sar

Barella

Gruttadauria

et al. 2018

Advances in Materials Science and Engineering

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Rolling temperature and rolling reduction intensively influence the formation of Luder lines and fluting marks in mild steels. They govern these effects through control of strain aging. In order to enhance the strain aging resistance and the consequent reduction of yield point elongation and fluting intensity, warm rolling without using the skin pass process is applied. The development of microstructure and crystallographic textures during deformation process and the determination of fluting intensity and mechanical properties consisting of tensile and formability properties in terms of different thermomechanical conditions (RT and RR%) were investigated in this study. These properties are determined through the use of bending, tensile tests, optical microscope, and EBSD analysis.

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Section: Microstructure and Crystallographic Texturesupporting

confidence: 69%

The Influence of Thermomechanical Processing Conditions on the Evolution of Microstructure and Crystallographic Textures and the Mechanical Properties of Deformed Mild Steels in the Intercritical Region

Sar

Barella

Gruttadauria

et al. 2018

Advances in Materials Science and Engineering

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“…Despite these merits, its production costs have remained high as SAF 2507 SDSS contains high contents of expensive alloying elements such as nickel and molybdenum. Meanwhile, due to the huge differences in composition, microstructure and mechanical properties between the austenite and ferrite phases, and their extremely complex plastic deformation behavior, the hot working difficulty of the alloy increases correspondingly, and usually leads to poor surface quality of finished products [12][13][14][15][16]. Such poor surface integrity of hot-workpiece limits its application in industrial production.…”

Section: Introductionmentioning

confidence: 99%

Controlled cold rolling effect on microstructure and mechanical properties of Ce-modified SAF 2507 super duplex stainless steel

Zhou

Xiong

Yue

et al. 2019

Materials Science and Engineering: A

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Controlled cold rolling impacts on microstructure and mechanical properties of the rare earth Ce-modified SAF 2507 super duplex stainless steel (SDSS) are investigated towards a better application and development prospective over the pristine SDSS. Rolling was performed at room temperature with the deformation level in a range of 30% -90%. A large amount of dislocations into the ferrite phase turned out, and their density increased with the deformation. While, emergence of dislocation plugs group, ferrite grains get refined to nanometer scale during the deformation process. In addition to deformed bands within austenite, formation of α′-martensitic phases and significant increment in their volume fraction are detected and attributed to deformation-induced martensitic transformation. Elongation of the ferrite and austenite microstructures along the deformation direction under the action of high strain also resulted in fibers formation gradually. Correspondingly, significant increase in the strength index while decrement in the plasticity index are observed. Moreover, cold rolling deformation not only affects the tensile fracture morphology but also switches it from a typical ductile to a ductile and quasi-cleavage mixed fracture.

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“…Asymmetric rolling is a rolling technique that enables additional and uniform shear strain. [24][25][26][27][28][29] A primary benefit of asymmetric rolling is the fabrication of a more uniform material, as seen by the uniform-grain-size distribution of ferrite and the homogeneous dispersion of martensite islands in the present research. This results in a 3D uniform distribution of dislocations, and thus the creation of homogeneous recrystallized ferrite grains during annealing.…”

Section: Microstructural Evolutionmentioning

confidence: 99%

Effect of Intercritical Annealing Time on the Microstructure and Mechanical Properties of Dual‐Phase Steel Processed by Large‐Strain Asymmetric Cold‐Rolling

Khorasani

Jamaati

Aval

2023

steel research int.

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Herein, the effect of intercritical annealing time on the microstructure and mechanical properties of dual‐phase steel processed by large‐strain asymmetric cold‐rolling is studied. It is observed that the martensite islands are uniformly distributed in the ferrite phase in the microstructures of dual‐phase steels due to performing the asymmetric cold‐rolling before intercritical annealing treatment. As the intercritical annealing time increases up to 10 min, the fraction of martensite increases. By increasing the holding time and fraction of martensite, the carbon content of the martensite phase is decreased. The short‐term intercritical annealing eliminates the yield point phenomenon. However, intercritical annealing at 860 °C for 20 min leads to the reoccurrence of a yield point phenomenon. Increasing the intercritical annealing time to 10 min improves the yield strength to 505 MPa and ultimate tensile strength to 834 MPa. However, the strength decreases sharply after the holding time of 20 min. There is a perfect linear relationship between the mechanical properties and the fraction of martensite. Ductile failure is observed at the center of the fracture surfaces of dual‐phase steels while shear failure occurs at the edges of the fracture surfaces.

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Comparison between symmetric and asymmetric hot rolling techniques performed on duplex stainless steel 2205

Cited by 11 publications

References 13 publications

The Influence of Thermomechanical Processing Conditions on the Evolution of Microstructure and Crystallographic Textures and the Mechanical Properties of Deformed Mild Steels in the Intercritical Region

The Influence of Thermomechanical Processing Conditions on the Evolution of Microstructure and Crystallographic Textures and the Mechanical Properties of Deformed Mild Steels in the Intercritical Region

Controlled cold rolling effect on microstructure and mechanical properties of Ce-modified SAF 2507 super duplex stainless steel

Effect of Intercritical Annealing Time on the Microstructure and Mechanical Properties of Dual‐Phase Steel Processed by Large‐Strain Asymmetric Cold‐Rolling

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