Thermal stability of an ultrafine-grained dual phase TWIP steel

Razmpoosh, M.H.; Zarei-Hanzaki, A.; Haghdadi, N.; Cho, Jae-Hyung; Kim, Won Jae; Heshmati-Manesh, S.

doi:10.1016/j.msea.2015.03.066

Cited by 21 publications

(9 citation statements)

References 71 publications

(76 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Formation of GT component which is seen in Figure c is justified by existence of vast amount of twinning (up to 50% volume fraction) in all specimen, as these twins assist rotation of grains with Goss orientation. On one hand, as is reported elsewhere on the annealing texture of TWIP steel and austenitic stainless steel after developing of recrystallization, the γ‐fiber (F component) depleted and in the current study the same trend could be observed (Figure c). It should be also mentioned that after developing recrystallization, the intensity of S component which is a signature of deformation almost remains the same due to slower kinetic of recrystallization and grain growth phenomena which is expected in high entropy alloys (HEA) .…”

Section: Resultssupporting

confidence: 91%

Microstructural Evolution and Texture Analysis in a Thermomechanically Processed Low SFE Super‐Austenitic Steel (Alloy‐28)

2018

View full text Add to dashboard Cite

Microstructural evolution and texture analysis after 80% cold rolling and subsequent annealing in the temperature range of 750-1050 C is surveyed in Alloy-28. This is precisely studied through electron back scattered diffraction and also is declared through elaborating the hardness map. The occurrence of partially recrystallization is clearly evident in the microstructure which was treated 850 C annealing for 30 min. The recrystallization process is completed at 950 C even after 3 min, but in an inhomogeneous manner, that is, coexistence of relatively large and fine recrystallized grains. This microstructure contains a high volume of special grain boundaries ended to the complete and homogenous recrystallization at 1050 C, where further grain growth is occurred with increasing time. Texture analysis shows the retaining of Goss texture after annealing at 850 C and this component is introduced as the main reason for retarding recrystallization and, therefore, creation of inhomogeneous microstructure. Finally, the specimens processed at 1050 C indicate the α-fiber texture due to occurrence of grain growth. The mechanical properties improvement is mainly attributed to the development of S component and also formation of high fraction of annealing twin. Although, predominant the appearance of Goss texture and grain growth are also known as the main reason for deteriorating strength.

show abstract

Section: Resultssupporting

confidence: 91%

Microstructural Evolution and Texture Analysis in a Thermomechanically Processed Low SFE Super‐Austenitic Steel (Alloy‐28)

2018

View full text Add to dashboard Cite

show abstract

“…In the case of the same steel cold-rolled to 42% thickness reduction and subjected to isochronal annealing, an electron back-scattering diffraction (EBSD) study estimated an activation energy of 237.2 ± 17.3 (kJ/mol) for γ grain growth between 700 and 900 °C annealing; a value that suggests the operation of grain boundary diffusion [19]. In addition, the activation energy of γ grain growth in Fe-29Mn-0.06C high Mn steel during isothermal annealing at 1000 °C was estimated as 208 kJ/mol [20]. In this regard, the activation energy for γ grain growth for Fe-1.51Mn-0.03Si-0.17C, Fe-1.43Mn-0.03Si-0.12C and Fe-0.86Mn-0.03Si-0.11C plain carbon steels is estimated as ~262, 271 and 272 kJ/mol respectively [21]; values that are slightly higher than high Mn steel.…”

Section: Introductionmentioning

confidence: 99%

Effect of isochronal annealing on the microstructure, texture and mechanical properties of a cold-rolled high manganese steel

Pramanik

Saleh

Pereloma

et al. 2018

Materials Characterization

View full text Add to dashboard Cite

show abstract

“…It was concluded that the dynamic recrystallized grains inherit the orientation of the sheared original grains. In contrast, Razmpoosh et al and Sato et al have shown that the static annealing of friction stir welded and processed austenitic steels would lead to recrystallization texture, which are thermally stable grains with different orientations from those developed during the stirring process.…”

Section: Introductionmentioning

confidence: 92%

“…The recrystallized materials would be deposited behind the probe, modifying the local properties. In addition, Fonda et al and Razmpoosh et al have reported the evolution of some particular simple shear textures in the course of friction stir welding and processing of austenitic stainless steel and TWIP steels, respectively. In this regard, Cho et al have investigated the formation of A and B fibers of simple shear textures during FSW of 304L austenitic stainless steel, based on crystal plasticity modeling.…”

Section: Introductionmentioning

confidence: 99%

The Correlation of Macrostructure, Microstructure, and Texture with Room Temperature Mechanical Properties of a Twinning‐Induced Plasticity Automotive Steel after Friction Stir Spot Welding/Processing

Barabi

Zarei-Hanzaki

Abedi

et al. 2018

steel research int.

Self Cite

View full text Add to dashboard Cite

The microstructure and texture evolution of a commercialized twinning‐induced plasticity automotive steel during friction stir spot welding/processing are addressed. The welding is conducted at various rotational speeds of 1000, 1600, and 2500 rpm, considering effects of strain rate and heat input on microstructural evolution. Sub grains with low angle grain boundaries are mainly developed at the thermomechanically‐affected and stirred zones. At low rotational speed of 1000 rpm, continuous dynamic recrystallization occurred at the stirred zone, which eventually led to considerable grain refinement. At higher rotational speeds, dynamic recrystallization is also observed near the stirred zone. The static/dynamic microstructural evolution increased the extent of bimodality of the grain size distribution, and enhanced mechanical properties. The hook formation is hindered owning to the influence of the dynamic recrystallization on the material's flow during welding. Some fiber textures belonging to shear components are detected under low rotational speed. As deformation increased with rotational speed, shear texture further developed. Different types of shear textures of A‐Fiber and B/B¯ are observed at 1600 and 2500 rpm, respectively. The mechanical properties are explored in connection with macrostructure, microstructure, and texture evolutions.

show abstract

Thermal stability of an ultrafine-grained dual phase TWIP steel

Cited by 21 publications

References 71 publications

Microstructural Evolution and Texture Analysis in a Thermomechanically Processed Low SFE Super‐Austenitic Steel (Alloy‐28)

Microstructural Evolution and Texture Analysis in a Thermomechanically Processed Low SFE Super‐Austenitic Steel (Alloy‐28)

Effect of isochronal annealing on the microstructure, texture and mechanical properties of a cold-rolled high manganese steel

The Correlation of Macrostructure, Microstructure, and Texture with Room Temperature Mechanical Properties of a Twinning‐Induced Plasticity Automotive Steel after Friction Stir Spot Welding/Processing

Contact Info

Product

Resources

About