Results 121 to 130 of about 47,195 (313)

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Numerical modeling of microstructural evolution in metals, ceramics and rocks

, 2002
Practically all metals, ceramics and rocks are polycrystalline materials which consist of a mixture of tiny grains (single crystals) which are" glued" together by interatomic forces. Polycrystals are intrinsically unstable.
El-Khozondar, Rifa J.
core  

Modeling the microstructural evolution during constrained sintering [PDF]

, 2012
A numerical model able to simulate solid state constrained sintering of a powder compact is presented. The model couples an existing kinetic Monte Carlo (kMC) model for free sintering with a finite element (FE) method for calculating stresses on a ...
Bjørk, Rasmus, Pryds, Nini, Frandsen, Henrik Lund, Tikare, V.   +3 more
core  

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

Microstructural evolution of tungsten oxide thin films

, 2009
Tungsten oxide thin films are of great interest due to their promising applications in various optoelectronic thin film devices. We have investigated the microstructural evolution of tungsten oxide thin films grown by DC magnetron sputtering on silicon
Rao, Mohan G, Thomas, Rajesh, Hembram, KPSS   +2 more
core  

A time dependent constitutive law for materials with microstructural evolution

, 2001
A material model is proposed which captures microstructural changes in materials with phase transformations. The micromechanical concept of a representative cell is used to derive evolution equations for microstructural variables and relations for the ...
Müller, Ralf, Gross, Dietmar, Ralf Mueller, Dietmar Gross   +3 more
core   +1 more source

Microstructure evolution and deformation mechanisms of service-exposed P91 steel via interrupted uniaxial creep tests at 660 °C

Journal of Materials Research and Technology
Creep degradation behaviour of service-exposed P91 steel is evaluated during interrupted creep tests at 660 °C and 80 MPa using a number of material characterization techniques including transmission electron microscopy (TEM), scanning electron ...
R. Bonetti, N.C. Neate, A. Morris, P.H. Shipway, W. Sun   +4 more
doaj   +1 more source

MicroProcSim: A Software for Simulation of Microstructure Evolution

Integrating Materials and Manufacturing Innovation
Abstract Understanding the large deformation behavior of materials under external forces is crucial for reliable engineering applications. The mechanical properties of materials depend on their underlying microstructures, which change over time during deformation. Experimental observation of these processes is time-consuming and influenced by
Md Maruf Billah, Muhammed Nur Talha Kilic, Md Mahmudul Hasan, Zekeriya Ender Eger, Yuwei Mao, Kewei Wang, Alok Choudhary, Ankit Agrawal, Veera Sundararaghavan, Pınar Acar   +9 more
openaire   +3 more sources

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source