Results 21 to 30 of about 14,324 (302)
Coherent-to-semi-coherent transition of precipitates in niobium-hydrogen thin films
Physical Review B, 2008 Nucleation and growth in thin films are studied by using niobium-hydrogen (Nb-H) as model system. Hydride precipitation in thin films results in local surface topography changes that can be monitored by scanning tunneling microscopy. The local film expansion can be used to detect hydride precipitates, to study their growth, to gain information about ...
Nörthemann, Kai, Pundt, Astrid
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Stabilization of coherent precipitates in nanoscale thin films
Philosophical Magazine, 2015 Coherent precipitates, on growth beyond a critical size (), become semi-coherent by the presence of interfacial misfit edge dislocations. In the case of precipitation in ‘small’ domains (matrix), the strain energy of the precipitate is altered with respect to its value in bulk domains, due to a lesser volume of strained material and domain deformations,
Rani, Pooja +5 more
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Crystals, 2021 In this work, the microstructural evolution and mechanical properties of new body-centered cubic (BCC)-based Al-Ti-Zr-Nb-Ta-Mo-V refractory high-entropy alloys (RHEAs) with coherent B2 precipitation are investigated.
Zhenhua Wang +5 more
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On the theory of strengthening by coherent ordered precipitates [PDF]
Philosophical Magazine Letters, 1990 Abstract This paper contrasts recent discussions of the theory of strengthening by coherent precipitates. The most important difference is in the assumed condition at maximum hardness. In one treatment, the maximum hardness is reached when dislocations first begin to loop precipitates, and is hence controlled by the largest particles in the precipitate
Glazer, J., Morris, J.W.
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Effect of boron on aging strengthened phase and properties of Cu–Cr–Zr alloy
Journal of Materials Research and Technology, 2022 The effect of trace B on the properties and microstructure of Cu–Cr–Zr alloy was investigated in this work. Aging precipitation phases in Cu matrix were analyzed by transmission electron microscopy (TEM) and high-resolution transmission electron ...
Junqing Han +5 more
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Effect of ceramic particles on precipitation in an Al-Mg-Si alloy with silicon excess during ageing [PDF]
MATEC Web of Conferences, 2020 Providing a good balance between lightweight and high mechanical properties, the aluminum-based metal matrix composites (MMC) became an interesting alternative for specific industrial applications.
Meyruey Gwenaëlle +2 more
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Materials Research Letters, 2021 The present work developed a new Fe-based superalloy of Fe–10.9Cr–13.9Ni–6.4Al–2.2Mo–0.5W–0.04Zr–0.005B (weight percent, wt. %) with cuboidal B2 nanoparticles coherently precipitated into the body-centred-cubic (BCC) matrix.
Zhenhua Wang +6 more
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Materials & Design, 2023 The mechanism for enhanced precipitation strengthening due to the addition of copper to Al-9.0Zn-1.5Mg (wt.%) alloys has been investigated by means of tensile test, transmission electron microscopy, anomalous small-angle X-ray scattering and three ...
Mengchu Yang +4 more
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Optimising predictor domains for spatially coherent precipitation downscaling [PDF]
Hydrology and Earth System Sciences, 2013 Statistical downscaling is widely used to overcome the scale gap between predictors from numerical weather prediction models or global circulation models and predictands like local precipitation, required for example for medium-term operational forecasts
S. Radanovics +4 more
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Shear band-driven precipitate dispersion for ultrastrong ductile medium-entropy alloys
Nature Communications, 2021 Precipitation hardening, used as an effective strengthening strategy in various alloy systems, has been usually achieved by coherent precipitates.
Tae Jin Jang +8 more
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