Multiple dispersed phases in a high-strength low-carbon steel: An atom-probe tomographic and synchrotron X-ray diffraction study

2009 ◽  
Vol 60 (11) ◽  
pp. 992-995 ◽  
Author(s):  
Michael D. Mulholland ◽  
David N. Seidman
Keyword(s):  
Carbon Steel ◽  
Diffraction Study ◽  
Low Carbon Steel ◽  
High Strength ◽  
Atom Probe ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dispersed Phases

scholarly journals Dislocation densities in a low-carbon steel during martensite transformation determined by in situ high energy X-Ray diffraction

2021 ◽  
Vol 800 ◽  
pp. 140249
Author(s):  
Juan Macchi ◽  
Steve Gaudez ◽  
Guillaume Geandier ◽  
Julien Teixeira ◽  
Sabine Denis ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Martensite Transformation ◽  
Low Carbon Steel ◽  
High Energy ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dislocation Densities

Influence of Iron Bacteria on the Corrosion Behavior of Carbon Steel: SEM Study

2013 ◽  
Vol 65 (1) ◽  
Author(s):  
E. Hamzah ◽  
C. L. Khohr ◽  
Ahmad Abdolahi ◽  
Z. Ibrahim
Keyword(s):  
Carbon Steel ◽  
Cooling Water ◽  
Low Carbon Steel ◽  
Iron Hydroxides ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Iron Bacteria ◽  
Microbially Influenced Corrosion ◽  
Sem Study

In this work, the iron bacteria were cultured and inoculated into the cooling water before immersion, and low carbon steel coupons were immersed for one month. Then, microbially influenced corrosion (MIC) of carbon steel in the presence of these bacteria was investigated using scanning electron microscopy (SEM), x-ray diffraction spectroscopy (XRD) and weight loss methods. SEM results showed that large amounts of corrosion products and heterogeneous biofilm layer were formed on the coupon surface. SEM also revealed the uniform-pitting corrosion on the steel surface due to bacteria colonization. XRD results show that the main constituents present in corrosion product are composed of iron oxides and iron hydroxides. 

Texture and Evolution of Recrystallization in Low Carbon Steel Wire

2006 ◽  
Vol 514-516 ◽  
pp. 554-558 ◽  
Author(s):  
Mosbah Zidani ◽  
Zakaria Boumerzoug ◽  
Thierry Baudin ◽  
Richard Penelle
Keyword(s):  
Carbon Steel ◽  
Isothermal Annealing ◽  
Steel Wire ◽  
Low Carbon Steel ◽  
Structural Evolution ◽  
Wire Drawing ◽  
Fiber Texture ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
X Ray

The effect of cold wire drawing on texture of industrial low carbon steel wire was investigated. On the other hand, the mechanism of recrystallization of drawn-wire was studied during different isothermal annealing below 723 °C. The structural evolution of wire was studied by optical microscopy, SEM, EBSD and X-Ray diffraction. From this study, a fiber texture was observed in deformed wire. However, a recrystallization reaction occurs after critical temperature during annealing.

Voltage-Pulsed and Laser-Pulsed Atom Probe Tomography of a Multiphase High-Strength Low-Carbon Steel

2011 ◽  
Vol 17 (6) ◽  
pp. 950-962 ◽  
Author(s):  
Michael D. Mulholland ◽  
David N. Seidman
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
High Strength ◽  
Atom Probe ◽  
Atomic Density ◽  
Metal Carbide ◽  
Low Carbon ◽  
Pulse Energies ◽  
532 Nm ◽  
Magnification Effect

AbstractThe differences in artifacts associated with voltage-pulsed and laser-pulsed (wavelength = 532 or 355 nm) atom-probe tomographic (APT) analyses of nanoscale precipitation in a high-strength low-carbon steel are assessed using a local-electrode atom-probe tomograph. It is found that the interfacial width of nanoscale Cu precipitates increases with increasing specimen apex temperatures induced by higher laser pulse energies (0.6–2 nJ pulse−1 at a wavelength of 532 nm). This effect is probably due to surface diffusion of Cu atoms. Increasing the specimen apex temperature by using pulse energies up to 2 nJ pulse−1 at a wavelength of 532 nm is also found to increase the severity of the local magnification effect for nanoscale M2C metal carbide precipitates, which is indicated by a decrease of the local atomic density inside the carbides from 68 ± 6 nm−3 (voltage pulsing) to as small as 3.5 ± 0.8 nm−3. Methods are proposed to solve these problems based on comparisons with the results obtained from voltage-pulsed APT experiments. Essentially, application of the Cu precipitate compositions and local atomic density of M2C metal carbide precipitates measured by voltage-pulsed APT to 532 or 355 nm wavelength laser-pulsed data permits correct quantification of precipitation.

Texture and Microstructure of Cold Rolled and Recrystallized Pure Niobium

2007 ◽  
Vol 539-543 ◽  
pp. 3436-3441 ◽  
Author(s):  
H.F.G. Abreu ◽  
Sergio S.M. Tavares ◽  
S.S. Carvalho ◽  
T.H.T. Eduardo ◽  
Antonia Daniele S. Bruno ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Cold Work ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Pure Niobium ◽  
Back Scattering ◽  
Cold Rolled

Crystallographic macrotexture of pure niobium cold rolled to 30, 60, 80 and 90% reduction was analyzed by X-ray diffraction and compared with low carbon steel texture. Annealed samples from 800oC, to 1200oC were investigated by X-ray diffraction and electron back scattering diffraction (EBSD). The texture of cold rolled polycrystalline niobium is characterized by a component {001}<110> that increases in intensity with the cold work percentage. After annealing, the component {001}<110> spreads out about 20o.

Scanning Three-Dimensional X-Ray Diffraction Microscopy with a High-Energy Microbeam at SPring-8

2017 ◽  
Vol 905 ◽  
pp. 157-164 ◽  
Author(s):  
Yujiro Hayashi ◽  
Daigo Setoyama ◽  
Yoshiki Seno
Keyword(s):  
Residual Stress ◽  
Carbon Steel ◽  
Stress Tensor ◽  
Three Dimensional ◽  
Low Carbon Steel ◽  
High Energy ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
X Ray ◽  
Grain Orientations

The grain-resolved residual stress (type II) in commercial-quality low carbon steel was observed using scanning three-dimensional X-ray diffraction (3DXRD) microscopy. In this method, grain orientations and lattice parameters are mapped using a monochromatic high-energy X-ray microbeam and 3DXRD-based polycrystalline indexing. Defining the reference lattice parameter a0 as the average value in the entire field of view, grain orientations and lattice parameters are converted into stress tensors, yielding a grain-resolved stress tensor map. The effectiveness of the scanning 3DXRD method was demonstrated by evaluating the residual stress in a cold-rolled low carbon steel sheet using a 50 keV microbeam at SPring-8. The area of the cross-sectional sample was 1×1 mm2, which was sufficiently larger than the grain size of about 20 μm. To produce a two-dimensional map of a circular region with a diameter of 160 μm at a pixel size of 1×1 μm2, the measurement time was about 1 h. From the stress tensor map, differences in residual stress of about 150–200 MPa between some neighboring grains were observed.

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