Publication
Coupled 3D Dislocation Modeling at Nano- and Micro-Scales
Related publications (62)
Dislocation Hardening in a New Manufacturing Route of Ferritic Oxide Dispersion-Strengthened Fe-14Cr Cladding Tube
The microstructure evolution associated with the cold forming sequence of an Fe-14Cr-1W-0.3Ti-0.3Y2O3 grade ferritic stainless steel strengthened by dispersion of nano oxides (ODS) was investigated. The material, initially hot extruded at 1100 degrees C an ...
MDPI2024The influence of lattice misfit on screw and edge dislocation-controlled solid solution strengthening in Mo-Ti alloys
William Curtin, Carolina Baruffi, You Rao
Mo-Ti alloys form solid solutions over a wide range of compositions, with lattice misfit parameters increasing significantly with titanium content. This indicates a strong increase in the critical stress for edge dislocation motion. Here, we probe the tran ...
SPRINGERNATURE2023Strengthening mechanisms in dilute and random solid solution high-entropy BCC alloys
Tuning the mechanical properties of metals, including strength, through adjusting the type and/or concentration of added solute elements, has been recognized as an effective way to design and produce materials with desired or optimized mechanical propertie ...
EPFL2022Screw vs. edge dislocation strengthening in body-centered-cubic high entrophy alloys and implications for guided alloy design
William Curtin, Francesco Maresca, Carolina Baruffi
Body-centered-cubic (BCC) high entropy alloys (HEAs) can show exceptionally high strength up to high temperatures. Mechanistic theories are needed to guide alloy discovery within the immense multicomponent HEA compositional space. Here, two new theories fo ...
SPRINGER HEIDELBERG2022Modeling of precipitate strengthening with near-chemical accuracy: case study of Al-6xxx alloys
Many metal alloys are strengthened by controlling precipitation to achieve an optimal peak-aged condi-tion where the strength-limiting processes of precipitate shearing and Orowan looping are thought to be comparable. Qualitative models have long captured ...
PERGAMON-ELSEVIER SCIENCE LTD2022Giant hardening response in AlMgZn(Cu) alloys
William Curtin, Daniel John Gilles Marchand
This study presents a thermomechanical processing concept which is capable of exploiting the full industrial application potential of recently introduced AlMgZn(Cu) alloys. The beneficial linkage of alloy design and processing allows not only to satisfy th ...
PERGAMON-ELSEVIER SCIENCE LTD2021Atomic Scale Investigations into the Origins of Ductility in Mg Alloys
The industrial applications of Mg, the lightest structural metal, and abundant in Earth's crust, are hampered by its low intrinsic ductility and low fracture toughness at room temperature which is attributed to the underlying less symmetric and plastically ...
EPFL2020Concurrent multiscale modeling and theory of solute-strengthening for dilute and complex concentrated alloys
Under common processing conditions, both dilute and complex concentrated alloys are often realized as random alloys, with no correlation in the occupancy of lattice sites by the constituent atom types. The current thesis primary addresses two problems in r ...
EPFL2020Analysis of double cross-slip of pyramidal I < c plus a > screw dislocations and implications for ductility in Mg alloys
William Curtin, Zhaoxuan Wu, Rasool Ahmad
Solute accelerated cross-slip of pyramidal < c + a > screw dislocations has recently been recognized as a crucial mechanism in enhancing the ductility of solid-solution Mg alloys. In pure Mg, cross-slip is ineffective owing to the energy difference between ...
PERGAMON-ELSEVIER SCIENCE LTD2020Hybrid granular hydrogels: combining composites and microgels for extended ranges of material properties
Dominique Pioletti, Pierre-Etienne Bourban, Peyman Karami, Céline Samira Wyss
Developing hydrogels with optimal properties for specific applications is challenging as most of these properties, such as toughness, stiffness, swelling or deformability, are interrelated. The improvement of one property usually comes at the cost of anoth ...
ROYAL SOC CHEMISTRY2020