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Phase nucleation through confined spinodal fluctuations at crystal defects evidenced in Fe-Mn alloys

, D. et al. Grain boundary segregation engineering in metallic alloys: a pathway to the design of interfaces . Curr. Opin. Solid State Mater. Sci . 18 , 253 - 261 ( 2014 ). 17. Kuzmina , M. , Ponge , D ... . & Raabe , D. Grain boundary segregation engineering and austenite reversion turn embrittlement into toughness: example of a 9 wt.% medium Mn steel . Acta Mater . 86 , 182 - 192 ( 2015 ). 18. Kwiatkowski da

A rare-earth free magnesium alloy with improved intrinsic ductility

Metals are the backbone of manufacturing owing to their strength and formability. Compared to polymers they have high mass density. There is, however, one exception: magnesium. It has a density of only 1.7 g/cm3, making it the lightest structural material, 4.5 times lighter than steels, 1.7 times lighter than aluminum, and even slightly lighter than carbon fibers. Yet, the...

Stiff, light, strong and ductile: nano-structured High Modulus Steel

Structural material development for lightweight applications aims at improving the key parameters strength, stiffness and ductility at low density, but these properties are typically mutually exclusive. Here we present how we overcome this trade-off with a new class of nano-structured steel – TiB2 composites synthesised in-situ via bulk metallurgical spray-forming. Owing to the...

Correlative Microscopy—Novel Methods and Their Applications to Explore 3D Chemistry and Structure of Nanoscale Lattice Defects: A Case Study in Superalloys

indicate if changes were made. 1. Y.J. Li , P. Choi , C. Borchers , S. Westerkamp , S. Goto , D. Raabe , and R. Kirchheim , Acta Mater. 59 , 3965 ( 2011 ). 2. C. Fuller , J. Murray , and D. Seidmann , Acta ... ). 7. R.K.W. Marceau , G. Sha, R. Ferragut , A. Dupasquier , and S.P. Ringer , Acta Mater. 58 , 4923 ( 2010 ). 8. M. Herbig , Scr. Mater. 148 , 98 ( 2017 ). 9. M. Herbig , D. Raabe , Y.J. Li , P. Choi

Enhanced strength and ductility in a friction stir processing engineered dual phase high entropy alloy

, Düsseldorf, GermanyZ. Li & D. Raabe AuthorsSearch for S. S. Nene in:Nature Research journals • PubMed • Google Scholar Search for K. Liu in:Nature Research journals • PubMed • Google Scholar Search for M ... • Google Scholar Search for K. C. Cho in:Nature Research journals • PubMed • Google Scholar Search for Z. Li in:Nature Research journals • PubMed • Google Scholar Search for D. Raabe in:Nature Research

Complexion-mediated martensitic phase transformation in Titanium

• Google ScholarSearch for M. J. Lai in:Nature Research journals • PubMed • Google ScholarSearch for A. -C. Dippel in:Nature Research journals • PubMed • Google ScholarSearch for D. Raabe in:Nature Research ... Correspondence to J. Zhang or C. C. Tasan or D. Raabe. Supplementary information PDF files1.Supplementary Information Supplementary Tables and Supplementary Figures Videos1.Supplementary Movie 1 A movie of

Core-shell nanoparticle arrays double the strength of steel

Manipulating structure, defects and composition of a material at the atomic scale for enhancing its physical or mechanical properties is referred to as nanostructuring. Here, by combining advanced microscopy techniques, we unveil how formation of highly regular nano-arrays of nanoparticles doubles the strength of an Fe-based alloy, doped with Ti, Mo, and V, from 500 MPa to 1 GPa...

Ultra-strong and damage tolerant metallic bulk materials: A lesson from nanostructured pearlitic steel wires

Structural materials used for safety critical applications require high strength and simultaneously high resistance against crack growth, referred to as damage tolerance. However, the two properties typically exclude each other and research efforts towards ever stronger materials are hampered by drastic loss of fracture resistance. Therefore, future development of novel ultra...

Coupling of Electron Channeling with EBSD: Toward the Quantitative Characterization of Deformation Structures in the SEM

The coupling of electron channeling contrast imaging (ECCI) with electron backscatter diffraction (EBSD) provides an efficient and fast approach to perform ECCI of crystal defects, such as dislocations, cells, and stacking faults, under controlled diffraction conditions with enhanced contrast. From a technical point of view, the ECCI technique complements two of the main electron...

Large recovery strain in Fe-Mn-Si-based shape memory steels obtained by engineering annealing twin boundaries

Max-Planck-Institut für Eisenforschung GmbH and X. Zhang for helping us to prepare all the figures. Author information Author notesY.H. Wen & D. Raabe These authors contributed equally to this work ... Düsseldorf, GermanyY.H. Wen, D. Raabe & I. Gutierrez-UrrutiaResearch Center for Strategic Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba-city, Ibaraki 305-0047, JapanI

Autonomous Filling of Grain-Boundary Cavities during Creep Loading in Fe-Mo Alloys

. Tichelaar , W.G. Sloof , M. Kuzmina , M. Herbig , D. Raabe , E. Bru¨ ck , S. van der Zwaag, and N.H. van Dijk: Metall. Mater. Trans. A , 2015 , vol. 46A, pp. 5656 - 70 . 23. K. Thompson , B. Gorman , D.J ... V. Paidar : Acta Mater., 2003 , vol. 51 , pp. 3951 - 63 . 35. M. Herbig , D. Raabe , Y.J. Li , P. Choi , S. Zaefferer , and S. Goto : Phys. Rev. Lett. , 2014 , vol. 112 , p. 126103 . 36. G. Stechauner

Autonomous Repair Mechanism of Creep Damage in Fe-Au and Fe-Au-B-N Alloys

. 23 , pp. 425 - 40 . 47. Y. Chen , X.Y. Fang , Y. Brechet , and C.R. Hutchinson : Acta Mater., 2014 , vol. 81 , pp. 291 - 303 . 48. Y.J. Li , D. Ponge , P. Choi , and D. Raabe : Scripta Mater., 2015

Particle stress in suspensions of soft objects

In a suspension of extended objects such as colloidal particles, capsules or vesicles, the contribution of particles to the stress is usually evaluated by first determining the stress originating from a single particle (e.g. via integrating the fluid stress over the surface of a particle) and then adding up the contributions of individual particles. While adequate for a...

Spectral and angular distribution of light scattered from the elytra of two carabid beetle species

Color in living organisms is primarily generated by two mechanisms: selective absorption by pigments and structural coloration, or a combination of both. In this study, we investigated the coloration of cuticle from the wings (elytra) of the two ground beetle species Carabus auronitens and Carabus auratus. The greenish iridescent color of both species is created by a multilayer...

Spectral and angular distribution of light scattered from the elytra of two carabid beetle species

Color in living organisms is primarily generated by two mechanisms: selective absorption by pigments and structural coloration, or a combination of both. In this study, we investigated the coloration of cuticle from the wings (elytra) of the two ground beetle species Carabus auronitens and Carabus auratus. The greenish iridescent color of both species is created by a multilayer...

Three-Dimensional Orientation Microscopy in a Focused Ion Beam–Scanning Electron Microscope: A New Dimension of Microstructure Characterization

In the present work, we report our recent progress in the development, optimization, and application of a technique for the three-dimensional (3-D) high-resolution characterization of crystalline microstructures. The technique is based on automated serial sectioning using a focused ion beam (FIB) and characterization of the sections by orientation microscopy based on electron...

Discrete nuclear structures in actively growing neuroblastoma cells are revealed by antibodies raised against phosphorylated neurofilament proteins

Background Nuclear objects that have in common the property of being recognized by monoclonal antibodies specific for phosphoprotein epitopes and cytoplasmic intermediate filaments (in particular, SMI-31 and RT-97) have been reported in glial and neuronal cells, in situ and in vitro. Since neurofilament and glial filaments are generally considered to be restricted to the...