Pure screw dislocations can become helical by absorbing defects such as vacancies and develop attractive interaction with another helical dislocation to form a double helix structure.

In steel production, an automated particle workflow can increase the efficiency and statistical relevance of nanosized precipitate analyses, resulting in increased productivity and accuracy.

A new type of material based on nanoporous copper foams using metallic nanowires as building blocks has promising applications in filtration media, smart masks, and air cleaners.

New electrical, mechanical, and chemical testing capabilities give scanning electron microscopes the feel of a self-contained “nano-laboratory.” Several developments in SEM technology allow new and more flexible approaches to the analysis of novel systems, such as Li battery-related materials, nanostructured and nanoporous materials, and novel approaches to 3D analysis.

This article describes a procedure for optimizing the annealed microstructure of a high Al KAB steel. The main focus is directed toward characterization of microstructural development during annealing of different phases in a nanostructured bainitic steel using high resolution transmission electron microscopy (HRTEM). This entry won the prestigious 2019 Jacquet-Lucas Award for Excellence in Metallography at the International Metallographic Contest held in Portland, Oregon, October 2019.

The rapid ability of next-generation EDS detectors to characterize beam sensitive materials is leading to breakthroughs in nanoparticle research.

Nanobrazing is an innovative brazing technique that uses nanomaterials as the filler materials. Incorporating nanobrazing into conventional technologies such as vacuum and laser brazing creates a new frontier for repairing turbine blades and vanes. Due to the unique “nanopowdering” of filler materials, the metallurgical mechanisms and thermodynamics of nanobrazing show promise for innovative applications.

A recently discovered nanocarbon phase, first imaged to atomic resolution in 2012, is being exploited to increase the electrical and thermal conductivity of metals and alloys. These unique materials, known as carbon covetic nanomaterials or covetics for short, represent an opportunity to improve energy efficiency over a wide range of applications using low-cost raw materials and scalable processes. This article briefly describes the structure, properties, and potential applications for covetics.

Affordable bulk production of a newly developed nanostructured bainitic steel is possible without using severe deformation or complex heat treatments. This article discusses the characteristics and significance of nanostructured bainite in terms of the transformation mechanism.

Advancements in nanoscience are making it possible to metallically glue two solids together at room temperature, in air, and under a small amount of mechanical pressure. Metallic glues can serve as excellent conductors for heat dissipation and electrical current in electronic devices and also as leak-resistant seals for vacuum environments.

Harnessing graphene's potential for commercial use requires attaining homogeneous dispersion and strong chemical bonding with the matrix of a target material. This can be achieved by effective surface modification. This article discusses approaches to graphene surface modification and includes a case study for using graphene as a filler to improve the mechanical properties of polymer composites.

This article briefly describes a new carbon nanocoating that provides corrosion protection through a two-coat system that is applied like paint, acts like plating, and relies on a much lower zinc content than existing three-coat solutions. Lost conductivity resulting from reduced zinc content is offset by highly conductive carbon nanotubes in the base layer.

By changing a setup and using electron transparent samples, hundreds of laboratories worldwide have access to a characterization technique, transmission Kikuchi diffraction, that measures grain sizes and orientations in nanocrystalline materials.

This article provides an overview of pulsed laser dewetting self-assembly (PLDSA) and its use in the production of silver and cobalt films with desired nanostructure.

Shape memory alloy nanowires have been successfully produced from indium-thallium, one of the least-studied binary SMAs. This article provides a brief overview of the process and some of the unique properties of the material. The article is based on the winning entry in the 2012 International Metallographic Contest sponsored by the International Metallographic Society.

Raman spectroscopy is an indispensable tool in laboratories conducting research in the nascent field of carbon nanomaterials. It provides comprehensive information about the structure and layer thickness of graphene samples with high levels of sensitivity, stability, and control.

Nano-scratch testing can be tailored to quantify the adhesion strength of small-scale surface formations, deposits, and structures on a wide range of materials. This article describes the basic measurement technique and presents examples showing how it has been used to evaluate the bonding characteristics of plasma-sprayed Al 2 O 3 splats on steel, osteoblast cells on hydroxyapatite-based coatings, and carbon nanotubes on copper and silicon substrates.

This article provides a brief overview of the applications of multimodal alumina-titania (n-AT) coatings stemming from a five-year program on thermal spray nanocoatings sponsored by the U.S. Office of Naval Research (ONR). In the main example, plasma sprayed n-AT coatings are applied to the propulsion shafts of Mine Countermeasure ships, bringing a fourfold increase in service life.

A multicomponent thermal spray coating system resists pick-up of contaminants that can cause flaws on heat treated strip surface.