Search · four archives
Search · four archives
27 papers · ranked by Valyu relevance
Renata de Oliveira Melo, Jean-Bernard Vogt, Eric Nivet, Flore Villaret + 5 more
This work investigated the effects of aging heat treatments on the microstructure and, consequently, the quasi-static (tensile properties) and dynamic (impact toughness) mechanical behaviour of a 17-4PH stainless steel produced by powder bed fusion laser beam (PBF-LB). Multiscale microstructural characterization, using…
Elizabeth A. Holm, Ryan Cohn, Nan Gao, Andrew R. Kitahara + 3 more
'Thomas P. Matson' 'Bo Lei' 'Srujana Rao Yarasi'] The characterization and analysis of microstructure is the foundation of microstructural science, connecting the materials structure to its composition, process history, and properties. Microstructural quantification traditionally involves a human deciding a priori what…
Seong-Hyun Park, Sungho Choi, Dong-Gi Song, Kyung-Young Jhang + 1 more
'Emanuela Cerri'] Metal additive manufacturing (AM) is an innovative manufacturing technology that uses a high-power laser for the layer-by-layer production of metal components. Despite many achievements in the field of AM, few studies have focused on the nondestructive characterization of microstructures, such as…
Paul Seibert, Alexander Raßloff, Karl A. Kalina, Marreddy Ambati + 1 more
'Markus Kästner'] Microstructure characterization and reconstruction (MCR) is an important prerequisite for empowering and accelerating integrated computational materials engineering. Much progress has been made in MCR recently, however, in absence of a flexible software platform it is difficult to use ideas from other…
Anton Davydok, Kritika Singh, Surya Snata Rout, Christina Krywka + 1 more
A rapid scanning X-ray nanodiffraction method is demonstrated to efficiently assess local microstructural changes in polycrystalline micropillars during deformation, enabling real-time insights.
Jurij J. Sidor, Baitao Zhang
The microstructural features of polycrystals determine numerous properties, whereas the evolution of crystallographic texture is responsible for the anisotropy of particular properties. Therefore, it is of crucial importance to find proper quantitative indicators, which reflect the nature of microstructure and texture…
A. Dhal, S. K. Panigrahi, M. S. Shunmugam
During microforming of conventional materials, specimen and microstructural length-scales are close to each other. This leads to an abnormal deformation behavior of the material and reduces microformability. Engineering ultrafine-grained (UFG) microstructure in the material is a possible solution. However, micro-scale…
Arun J. Bhattacharjee, Harold S. Barnard, Alastair MacDowell, Dilworth Parkinson + 2 more
'Dilworth Parkinson' 'Harrison P. Lisabeth' 'K. Kvashnina'] An environmental cell with fluid flow-through capability for performing in situ nano-mechanical experiments at X-ray nanotomography beamlines and a sample manipulator for mounting nanotomography samples are described.
Marina Knyazeva, Julian Rozo Vasquez, Leonard Gondecki, Max Weibring + 6 more
'Fabian Pöhl' 'Monika Kipp' 'Peter Tenberge' 'Werner Theisen' 'Frank Walther' 'Dirk Biermann'] The evaluation of wear progress of gear tooth flanks made of 16MnCr5 was performed using non-destructive micro-magnetic testing, specifically Barkhausen noise (BN) and incremental permeability (IP). Based on the physical…
Enze Chen, Byumsu Kim, Nikolaos Bouklas, Lawrence J. Bonassar + 1 more
Collagen scaffolds seeded with human chondrocytes have shown great potential for cartilage repair and regeneration. However, these porous scaffolds buckle under low compressive forces, creating regions of highly localized deformations that can cause cell death and deteriorate the integrity of the engineered tissue. We…
Zhiyuan Lang, Zunshuai Zhang, Lei Wang, Yuhan Liu + 5 more
scale Authors: ['Zhiyuan Lang' 'Zunshuai Zhang' 'Lei Wang' 'Yuhan Liu' 'Weixiong Qian' 'Shenghua Zhou' 'Ying Jiang' 'Tong‐Yi Zhang' 'Jiong Yang'] Zhiyuan Lang1 , Zunshuai Zhang1 , Lei Wang1 , Yuhan Liu1,2 , Weixiong Qian1 , Shenghua Zhou1 , Ying Jiang3 , Tongyi Zhang1 , and Jiong Yang1 1Materials Genome Institute…
Authors not listed
Given the recent inclusion of sodium-ion batteries (SIBs) in the energy market, the optimization of their performance becomes a relevant research topic. At the electrode-level, the parameters selected during its manufacturing process influence its microstructure and, consequently, its electrochemical performance. Here…
Authors not listed
Hydrogen embrittlement severely degrades mechanical properties of austenitic stainless steels (γ-SS), yet the bulk deformation microstructures responsible for this phenomenon have not been directly observed. While the internal microstructure is essential to define metal plasticity, deformation, and fracture, no…
Pei‐En Chen, Wenxiang Xu, Nikhilesh Chawla, Yi Ren
Effective and accurate characterization and quantification of complex microstructure of a heterogeneous material and its evolution under external stimuli are very challenging, yet crucial to achieving reliable material performance prediction, processing optimization and advanced material design. Here, we address this…
Jordi Seuba, Eric Maire, Jérôme Adrien, Sylvain Meille + 1 more
Ceramics are brittle, so imagine what porous ceramics are like. This weakness is often a major obstacle in many applications. The addition of a ductile phase such as a polymer to a porous ceramics can help overcome this intrinsic limitation. Yet, most studies so far have focused on the processing and characterization…
Elizabeth J. Kautz, Wufei Ma, Saumyadeep Jana, Arun Devaraj + 3 more
'Vineet V. Joshi' 'Bülent Yener' 'D. Lewis'] Micrograph quantification is an essential component of several materials science studies. Machine learning methods, in particular convolutional neural networks, have previously demonstrated performance in image recognition tasks across several disciplines (e.g. materials…
Corinne Charles Murgau, Andreas Lundbäck, Pia Åkerfeldt, Robert Pederson
'Robert Pederson'] In the present study, the gas tungsten arc welding wire feed additive manufacturing process is simulated and its final microstructure predicted by microstructural modelling, which is validated by microstructural characterization. The Finite Element Method is used to solve the temperature field and…
Authors not listed
Microplastics - defined as tiny polymer fragments less than 5 mm in size - pose a clear threat to a wide range of small organisms through ingestion, leading to starvation. In addition, there are many reports of their occurrence both in remote geographical areas and in the human body. Small and made of mostly inert…
Justina Bonaventura, Kellys Morara, Rhea Carlson, Courtney Comrie + 3 more
Understanding microscale physiology and microstructural cellular features of the brain is key to understanding the mechanisms of neurodegenerative diseases and injury, as well as the prominent changes that neurons and glia in the brain undergo in development and aging which reflect functional state. Non-invasive…
Hassan Saad, Thierry Douillard, Annie Malchère, Philippe Steyer + 3 more
Nacre-like aluminas are bio-inspired, ceramic-based composites that display high toughness and strength. Their toughness arises from their brick-and-mortar microstructure. We must understand the role of several microstructural features over their mechanical properties. Techniques that allow microstructural imaging…
Stefan Gabel, Benoit Merle, Erik Bitzek, Mathias Göken
The lifetime of most metals is limited by cyclic loads, ending in fatigue failure. The progressive growth of cracks ends up in catastrophic failure. An advanced method is presented for the determination of cyclic crack growth on the microscale using a nanoindenter, which allows the characterization of>10,000 loading…
Nikita Vostrov, Isaac Martens, Mattia Colalongo, Edoardo Zatterin + 5 more
The core principles and nanoscale mechanisms of ion deintercalation in battery cathode materials remain poorly understood, in particular, the relationship between crystallographic defects (dislocations, small angle grain boundaries, vacancies, etc.) and microscopic features of Li deintercalation. Here, we used operando…
Eva Seknazi, Paul Zaslansky, Alex Katsman, Julie Villanova + 1 more
The dorsal arm plates (DAPs) of the Ophiocoma Wendtii brittle star are highly functional single crystalline biominerals whose optimized structure and nanostructure enable them to fullfill mechanical and optical functions in the organism. Here, a large DAP bulk piece is characterized by means of synchrotron X-ray…
Drew Vecchio, Samuel Mahler, Mark D. Hammig, Nicholas A. Kotov
Mimicking numerous biological membranes and nanofiber-based tissues, there are multiple materials that are structured as percolating nanoscale networks (PPNs). They reveal unique combination of properties and the family of PNN-based composites and nanoporous materials is rapidly expanding. Their technological…
Alexander M Wolff, Iris D Young, Raymond G Sierra, Aaron S Brewster + 34 more
Innovative new crystallographic methods are facilitating structural studies from ever smaller crystals of biological macromolecules. In particular, serial X-ray crystallography and microcrystal electron diffraction (MicroED) have emerged as useful methods for obtaining structural information from crystals on the…
Raphaël de Wijn, Kévin Rollet, Sylvain Engilberge, Alastair G. McEwen + 9 more
The reproducible preparation of well diffracting crystals is a prerequisite for every structural study based on crystallography. An instrument called the XtalController has recently been designed that allows the monitoring of crystallization assays using dynamic light scattering and microscopy, and integrates piezo…
Grant Korensky, Xinye Chen, Mengdi Bao, Abbi Miller + 3 more
A planar, transparent, and adaptable nano-sieve device is developed for efficient microalgae/bacteria separation. In our strategy, a sacrificial layer is applied in the dual photolithography patterning to achieve a one-dimensional channel with a very low aspect ratio (1:10,000). Microalgae/bacteria mixture is then…