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atom probe tomography

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Published: 01 October 2014
Fig. 10 Copper-rich precipitate morphology as determined from atom probe tomography reconstructions in an iron-copper steel. The precipitates are delineated by 10 at.% Cu isoconcentration surfaces. The increasing precipitate size is depicted as a function of aging time. The change in number More
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Published: 15 December 2019
Fig. 45 Atom probe tomography sample-preparation workflow using the focused ion beam. See text for description. Courtesy of B. Langelier, Canadian Centre for Electron Microscopy More
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003760
EISBN: 978-1-62708-177-1
... sectioning, focused ion beam tomography, atom probe tomography, and X-ray microtomography. Nine case studies are presented that represent the work of the various research groups currently working on 3D microscopy using serial sectioning and illustrate the variants of the basic experimental techniques...
Image
Published: 01 June 2016
Fig. 13 θ″ (GP-II) precipitates in aluminum-copper alloys. Al-4Cu alloy artificially aged for 8 h at 165 °C (330 °F), as seen by atom probe tomography. Dots are copper atoms; aluminum atoms are invisible. The regions of increased copper concentration are θ″ (GP-II). Courtesy of A. Biswas More
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Published: 01 June 2016
Fig. 16 θ′ precipitates in Al-4Cu alloy. (a) Bright-field transmission electron microscopy image after artificial aging for 1 h at 190 °C (375 °F). The alloy contained 0.01 wt% Sn, which forms the spherical nucleation sites marked by arrows ( Ref 146 ). (b) Atom probe tomography of a volume 78 More
Image
Published: 01 June 2016
Fig. 20 Correspondence between hardening (schematic) and the approximate occurrence of different metastable and stable phases in Al-Cu-Mg alloys situated in the α + S composition range of the phase diagram, as presented by various authors. GPB, Guinier-Preston-Bagaryatski; APT, atom probe More
Image
Published: 15 June 2020
Fig. 8 Oxide dispersion. (a) Scanning transmission electron micrographs and oxygen energy-dispersive spectroscopy maps of a bonded interface adjacent to a void showing the presence of an ~500 nm oxide dispersion. Source: Ref 42 . (b) Atom probe tomography reconstructions showing the interface More
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006675
EISBN: 978-1-62708-213-6
... determination of the surface Atom probe tomography Ellipsometry, mostly used for thin-film thickness measurement The techniques covered in this division are based on probing methods using direct probe contact, electron, ion, photon, thermal, or x-ray interaction between the analytical instrument...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006677
EISBN: 978-1-62708-213-6
... atomic site and is relatively well collimated ( Ref 17 ). The high brightness makes it possible to form focused probes smaller than can be achieved with the gallium FIB. Probe sizes as small as 0.25 nm have been reported for helium, but only for very low currents (<0.2 pA). The available ion species...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006268
EISBN: 978-1-62708-169-6
... transmission electron microscopy), and atom probe tomography reveal details in increasing resolution. Integral methods yield quantities that reflect the precipitation process indirectly. The most important quantities are the mechanical ones, for example, different hardness or strength values. Thermal analysis...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006574
EISBN: 978-1-62708-290-7
... Atom probe tomography ( Ref 43 , 50 ) Understand the role of oxide dispersion during ultrasonic additive manufacturing Sometimes (especially when the parameters are not optimized) the demarcation between individual layers becomes more apparent, with voids and unbonded regions. This is evident...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006456
EISBN: 978-1-62708-190-0
... CT scans of a section acquired at different x-ray energies to evaluate the effective atomic number of the materials present. Fig. 6 Computed tomography image of a rock sample with oil and water. The lighter circular areas at the top and right are areas containing water, while the darker...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005218
EISBN: 978-1-62708-187-0
... topography, two-dimensional X-ray radiography, and ultra-fast three-dimensional X-ray tomography. solidification microstructure solidification two-dimensional X-ray topography two-dimensional X-ray radiography in situ monitoring X-ray imaging synchrotron radiation ultra-fast three-dimensional X...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005504
EISBN: 978-1-62708-197-9
... these types of results can then be used in process and simulation modeling. Although there are a number of other very useful 3-D characterization techniques, such as x-ray tomography and 3-D atom probe tomography, it is beyond the scope of this article to cover them all. Instead, the reader is referred...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003238
EISBN: 978-1-62708-199-3
... inspection involves viewing of a real-time image on a fluorescent screen or image-intensifier, the radiographic process is termed “real-time inspection.” When electronic, nonimaging instruments are used to measure the intensity of radiation, the process is termed “radiation gaging.” Tomography, a radiation...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... Abstract This article introduces the principal methodologies and some advanced technologies that are being applied for nondestructive evaluation (NDE) of fiber-reinforced polymer-matrix composites. These include acoustic emission, ultrasonic, eddy-current, computed tomography, electromagnetic...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003436
EISBN: 978-1-62708-195-5
..., radiography, X-ray computed tomography, thermography, low-frequency vibration methods, acoustic emission, eddy current testing, optical holography, and shearography. The article presents some examples are for fiber-reinforced polymer-matrix composites. Many of the techniques have general applicability...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006262
EISBN: 978-1-62708-169-6
... scattering and atom probe tomography have further clarified both the changes in precipitate size and volume fraction as well as the local chemistry changes due to the partition of solute between matrix and precipitate ( Ref 38 ). The alloy receiving the most attention has been 7075, and in this material...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005962
EISBN: 978-1-62708-168-9
...; for it to form, cooling must be sufficiently fast to prevent the diffusion of carbon atoms. Although martensite is a nonequilibrium phase, it is capable of existing at room temperature almost indefinitely. In copper steels, martensite is the primary microconstituent of several higher-strength grades ( Ref 21...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.9781627081900
EISBN: 978-1-62708-190-0