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Materials

Metals

Projects/Programs

Displaying 26 - 50 of 66

Magnetic Materials Metrology

Ongoing
Our aim is to develop the metrology for control and manipulation of magnetic anisotropy in magnetic materials. This includes development of the measurement science for quantification of the magnetic properties (e.g., magnetic anisotropy, magnetic exchange) and the structure-property-processing

Magnetic Nanostructures for post-CMOS Electronics

Completed
We focus primarily on arrays of magnetic nanostructures in order to reveal how defects alter the fundamental physics of magnetization reversal processes in the nanometer regime. We have an integrated approach that consists of four inter-related elements. The first element, film edge metrology

Material Qualification

Ongoing
Objective To develop, utilize, and analyze methods of characterizing the precursor materials in additive manufacturing in both virgin and recycled states with the goal of advancing measurement science to benefit the AM community. The components of principal interest will include the rheological
MGI goals

Materials Informatics

Ongoing
To develop the need data infrastructure and informatics tools, NIST is focusing on three areas: data curation, data infrastructure, and data access. Data curation efforts include efforts to develop a phase-based materials ontology to ensure that the data is represented in a semantically
complex oxides

Measurements of Point-Defect Chemistry in Complex Oxides

Ongoing
Project Goal: To develop magnetic resonance, x-ray absorption, electron diffraction, and electrical conductivity measurements to better characterize dilute concentrations of point defects in oxide materials and effectively correlate electro-mechanical properties to measured defect chemistry. Oxide

Metrics for Reactive Wetting in Complex Systems

Completed
From fundamental physical considerations, we have derived a set of partial differential equations describing wetting and spreading. These equations are derived using a variational thermodynamic principle applied to a two-component alloy system with three (vapor, liquid and solid) phases. The method
Photo of the magnetic moment and susceptibility SRMs - platinum cylinder, YIG sphere, Ni sphere, and Ni disk.

Metrology of Magnetic Materials

Ongoing
Currently, the bulk of this project is focused on three main pieces: Thermal MagIC: An SI-Traceable Method for 3D Thermal Magnetic Imaging and Control Magnetic Refrigeration Magnetic Standard Reference Materials (SRMs) Thermal MagIC (MAGnetic Imaging and Control) is focused on developing new

Metrology for Multi-Physics AM Model Validation

Completed
Objective To provide reference data for the validation of multi-physics models of metal additive manufacturing processes to enable improvement of AM process models and more rapid and predictable process development for AM production by manufacturers. What is the Technical Idea? The Metrology for

Metrology for Real-Time Monitoring of Additive Manufacturing

Completed
Objective To develop and disseminate metrology methods, tools, data, and standards applied to in-situ monitoring of AM processes, such that manufacturers and their customers can accurately and precisely determine the quality of the fabrication process and resulting parts. What is the Technical Idea

Microscopy Methods

Completed
Due to projection effects, analytical transmission electron microscopy (AEM) of thinned or sectioned samples has traditionally been limited to essentially two-dimensional imaging and analysis. Current nanometer scale devices are too small and complex for current sectioning capabilities and two

Microstructure-Property Tools for Structure-Property Design

Ongoing
Materials Digital Twins for AM Current methodologies for designing digital twins in additive manufacturing (AM) exhibit two main approaches: one involves AI models. that establish a direct correlation between input and output properties, overlooking materials structure and characterization, while
A stainless steel micro tensile specimen in a silicon frame.

Microsystems for Harsh Environment Testing

Completed
Classically, measurement of the mechanical properties and reliability of bulk-scale materials is performed with macroscopic specimens and methods. Specimen preparation limitations, miniaturized load-frame tooling problems, and inadequate understanding of the roles of specimen size and constraint on
Multifunctional AM Project Page

Multifunctional 3D Printable Polymer-Metal Composites

Ongoing
Recent advances in additive manufacturing (AM) have positioned metals and polymers as two key materials. Typically, AM of these two materials involves incompatible methods and conditions. The novel multifunctional polymer-metal composites in this project incorporate low-melting alloys with
USAXS animation

Multiscale structure and dynamics in advanced technological materials

Ongoing
New technologies increasingly harness materials phenomena that operate across many length-scales: e.g., in selective gas adsorption, additive manufacturing, new alloy designs, or advanced concretes. To overcome technology barriers, it is no longer sufficient just to characterize the materials
Nanocalorimeter Measurements Project

Nanocalorimetry Measurements

Ongoing
Accurate thermodynamic measurements are essential to understand fundamental properties of materials, providing direct and quantifiable insight into the thermodynamics of thin film reactions and phase transitions. Going forward, new classes of materials may only be synthesized as thin films, a scale

Nanoplasmonics and Three-Dimensional Plasmonic Metamaterials

Ongoing
Plasmonic materials are composed of metals and insulators that are ordered in geometric arrangements with dimensions that are fractions of the wavelength of light. Research groups are experimenting with a variety of geometric approaches, but all aim to exploit surface plasmons, which are light

NCAL: Diffraction Stress Measurement Under Applied Load

Ongoing
Using X-ray diffraction (XRD) techniques one can measure the full stress tensor just inside the surface of a sheet metal specimen under applied loading. This permits the measurement of biaxial stress states resulting from directly applied deformation (see NCAL: Multiaxial Material Performance) or

NCAL: Intermediate Strain Rate Testing

Ongoing
This project seeks to improve servohydraulic testing methods at intermediate strain rates by addressing the well-known problems associated with excessive stress oscillations (ringing) that currently limit our understanding of the mechanical behavior of engineering materials for loading conditions

NCAL: International Documentary Standards Activities

Ongoing
NIST Center for Automotive Lightweighting (NCAL) staff participate in many different international standards committees (e.g. ISO TC 164, ASTM E28 and D30); however, our main focus has been in the mechanical testing of metals and, to a lesser extent, composites. We work on the calibration and

NCAL: Materials Testing 2.0

Ongoing
The traditional approach to calibrating material models, known as Materials Testing 1.0, is a time-consuming and costly process that requires multiple experiments to be performed on different types of testing equipment. This not only results in high capital costs for testing machines but also leads
2 meter diameter horizontal mechanical test machine with control computers

NCAL: Multiaxial Material Performance

Ongoing
Modern metal forming methods are designed and optimized using digital models of specific manufacturing operations. These models rely on a precise understanding of the mechanical behavior of sheet materials as they undergo multiaxial loading out to large plastic strains without failure (necking or

NCAL: NIST Center for Automotive Lightweighting

Ongoing
The ongoing development of new, advanced lightweight materials presents opportunities for the USA automotive industry to produce better, more reliable and less expensive products provided the new materials can be efficiently manufactured. The use of lightweight materials in automobiles, such as
Tension compresion fixturing with upper and lower loadcells and grips and lateral anti-buckling guides with pneumatic actuators

NCAL: Tension-Compression Testing

Ongoing
The inability to predict the mechanical behavior of new automotive alloys during forming has generated strong demand in industry for more advanced material models and test methods necessary to calibrate them. Industry is particularly interested in modeling the behavior of advanced sheet metals

Physical Infrastructure: Connections

Completed
The NIST Physical Infrastructure Program will provide the critical measurement science needed to assess the condition of aging physical infrastructure and guide cost-effective strategies for its maintenance, repair, and replacement. Infrastructure management challenges in the U.S. have received
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