Results 81 to 90 of about 65,345 (302)

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

Methods for qualifying the thermodynamic stability of safety valves and steam dump devices of nuclear power plants

Trudy Odesskogo Politehničeskogo Universiteta
Analysis of known developments in reliability analysis of safety valves and steam dump devices of reactors and steam generators of nuclear power plants with VVER has recognized the need for calculation qualification of safety valves and steam dump ...
Володимир Іванович Скалозубов, Юрій Сергійович Кацарський, Гліб Сергійович Дербеньов, Євгеній Вікторович Мазур, Валерія Юріївна Кочнєва   +4 more
doaj   +3 more sources

Precipitation Behavior of Carbides in H13 Hot Work Die Steel and Its Strengthening during Tempering

Metals, 2017
The properties of carbides, such as morphology, size, and type, in H13 hot work die steel were studied with optical microscopy, transmission electron microscopy, electron diffraction, and energy dispersive X-ray analysis; their size distribution and ...
Angang Ning, Wenwen Mao, Xichun Chen, Hanjie Guo, Jing Guo   +4 more
doaj   +1 more source

Calculation of Thermodynamic Properties of Polyelectrolytes [PDF]

The Journal of Chemical Physics, 1955
Expressions are derived which introduce an appreciable simplification into the calculation of the thermodynamic properties of solutions of polyelectrolytes in certain cases. For example, for a certain class of theoretical models of these systems it is found that the square of the mean ion activity coefficient of a uni-univalent salt in the presence of ...
openaire   +2 more sources

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

Advanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb, Zachary T. Kloenne, Samuel R. Rogers, Chi Hang Dominik Kwok, Mark C. Hardy, Michele S. Conroy, David Dye   +6 more
wiley   +1 more source

Some Aspects of Estimating Geometric Characteristics of Screw Compressors [PDF]

, 2012
The methods used today for the calculation of screw compressor thermodynamic and fluid flow processes, from quasi one-dimensional thermodynamic models to three-dimensional computational fluid dynamics (CFD) procedures, require accurate identification and
Buckney, David, Stosic, Nikola, Mujic, Elvedin, Kovacevic, Ahmed   +3 more
core   +1 more source

Thermodynamic properties calculation of Calpha Hbeta Ogamma Ntheta insulator plasmas [PDF]

, 1993
In the temperature range 5000-30000 K, thermodynamic properties of plasmas from vaporization of Calpha Hbeta Ogamma Ntheta insulators have been calculated in the pressure range from 1*105 Pa to 10*105 Pa. The method of calculation is indicated.
Koalaga, Z., Abbaoui, M'Hammed, Lefort, A.   +2 more
core   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source