Synchrotron X-Ray Diffraction Study of Texture Evolution in 904L Stainless Steel under Dynamic Shock Compression

Li, Nanan; Wang, Y. D.; Peng, Ru Lin; X, Sun; Ren, Yang; Wang, Lei; Cai, Houzhi

doi:10.1007/s11661-010-0368-2

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…The topography of grain orientation is more precise than optical microscopy and allows to determine the shape and size of grains [4]. An analysis of phase and crystallographic orientation of steel 904 L under the influence of dynamic deformations was presented in the article [5]. Research shows that the grains inside the transverse strands can result in little rotation while the transverse surfaces have less impact on the deformation texture.…”

Section: The Structure Of the Genuine Materialsmentioning

confidence: 99%

Microstructure and Mechanical Behavior of a Co2 Laser and Tig Welded 904l Steel

Bogdanowicz

Jóźwik

Nasiłowska

2014

mafe

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This paper presents the analysis of structural research, micro-hardness and mechanical properties of the base material which is steel 904 L and joints made with CO 2 laser beam and the TIG method. The analysis of the equilibrium system created in the Thermo-Calc programme based on chemical composition shows a dominancy of austenite with of Fe α additions, phase σ, P and Laves' and M 23 C 6 and Cr 9 Mo 21 Ni 20 carbides. EBSD (electron backscatter diffraction) research done by using an electron scanning microscope confirmed the presence of pure austenite.

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Section: The Structure Of the Genuine Materialsmentioning

confidence: 99%

Microstructure and Mechanical Behavior of a Co2 Laser and Tig Welded 904l Steel

Bogdanowicz

Jóźwik

Nasiłowska

2014

mafe

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“…In the literature, several studies are reported related to the microstructural evolution of AISI 904L, particularly focused on plastic deformation (e.g., [40][41][42]). Numerous variables have heavy impacts during this mechanical process and the consequent thermal treatments, so much that their effect needs to be analyzed in depth.…”

Section: Introductionmentioning

confidence: 99%

Recrystallization and Grain Growth of AISI 904L Super-Austenitic Stainless Steel: A Multivariate Regression Approach

Stornelli

Gaggiotti

Mancini

et al. 2022

Metals

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AISI 904L is a super-austenitic stainless steel that is remarkable for its mechanical properties and high corrosion resistance, which strictly depend on its chemical composition and microstructural features. The recrystallization process and grain growth phenomena play key roles in achieving high levels of material quality, as often requested by customers for specific applications. In this paper, the evolution of the microstructure and hardness values after cold rolling and subsequent annealing is reported, with the aim of optimizing the thermomechanical treatment conditions and improving the efficiency of the production process. The investigation was focused on three different cold reduction ratios (50%, 70% and 80%), while combining different annealing temperatures (950, 1050 and 1150 °C) and soaking times (in the range of 20–180 s. The test results were organized using a data analysis and statistical tool, which was able to show the correlation between the different variables and the impacts of these on recrystallization and grain growth processes. For low treatment temperatures, the tested soaking times led to partial recrystallization, making this condition industrially unattractive. Instead, for the higher temperature, full recrystallization was achieved over a short time (20–40 s), depending on the reduction ratio. Regarding the grain growth behavior, it was found to be independent of the reduction ratio; for each treatment temperature, the grain growth showed a linear trend as a function of the soaking time only. Moreover, the static recrystallization kinetics were analyzed using a statistical analysis software program that was able to provide evidence indicating the most and least influential parameters in the process. In particular, taking into consideration the hardness values as output data, the temperature and soaking time were revealed to have major effects as compared with the reduction ratio, which was excluded from the statistical analysis. The prediction approach allowed us to formulate a regression equation in order to correlate the response and terms. Moreover, a response optimizer was used to predict the best solution to get as close as possible to the hardness target required by the market.

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Texture evolution in nanocrystalline Ta under shock compression

Huang

Feng

et al. 2021

Journal of Applied Physics

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We present systematic investigation on texture evolution in nanocrystalline Ta under planar shock wave loading at different impact velocities. Seven representative initial textures and two loading directions are studied via large-scale molecular dynamics simulations. Orientation mapping and texture analysis, including orientation distribution functions, pole figures, and inverse pole figures, are performed. Shock compression induces a ⟨221⟩ texture in nanocrystalline Ta initially with no texture, ⟨100⟩ fiber texture, {100}⟨100⟩ texture, and θ+γ rolling texture via twinning, which can be traced back to grains initially with ⟨100⟩. A ⟨100⟩ texture is induced via twinning for nanocrystalline Ta initially with no texture, ⟨110⟩ fiber texture, and α+γ rolling texture and can be traced back to ⟨110⟩. Dislocation slip and grain boundary sliding lead to the movement of ⟨110⟩ toward ⟨111⟩, and the strengthening of ⟨100⟩ and ⟨111⟩ orientation densities. The generation of new textures is observed for most cases. However, no new texture is found in the ⟨111⟩ fiber texture case for shock loading parallel to the fiber, and a much slower elastic–plastic transition occurs due to the lack of deformation twinning.

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Synchrotron X-Ray Diffraction Study of Texture Evolution in 904L Stainless Steel under Dynamic Shock Compression

Cited by 3 publications

References 18 publications

Microstructure and Mechanical Behavior of a Co2 Laser and Tig Welded 904l Steel

Microstructure and Mechanical Behavior of a Co2 Laser and Tig Welded 904l Steel

Recrystallization and Grain Growth of AISI 904L Super-Austenitic Stainless Steel: A Multivariate Regression Approach

Texture evolution in nanocrystalline Ta under shock compression

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