Search Results for material selection

Selecting materials for high-pressure hydrogen systems requires balancing technical understanding of hydrogen embrittlement and business considerations. While the direct effect of hydrogen on materials is usually manifested as ductility loss under tension stress, the most concerning failure in a hydrogen system is fatigue. Although no material is immune to property degradation caused by hydrogen, Type 316 stainless steel is among the best in resisting hydrogen embrittlement.

Although computer modeling of friction phenomena continues to improve, bench-scale and subscale tribotesting remain important in selecting materials, surface treatments, and lubricants for automotive applications.

A search for alternative, sustainable tonewood species has been prompted by constraints in availability and concerns about ecological impacts associated with established sources. This article describes an effort to identify tonewood substitutes for guitar soundboards using the ANSYS Granta Selector based on derived performance objectives for physical and mechanical properties. These objectives are then combined with those for species morphology, producibility, and sustainability to arrive at sustainable and viable tonewood substitution options that meet manufacturer and customer expectations.

Using a six sigma, statistics-based approach for selecting materials, offers a unique way to compare different options for use in various applications. Key factors to consider when selecting a new material for an application include a clear understanding of component and application requirements and component design aspects. This articles describes key concepts in using six sigma and quality function deployment concepts in materials selection.

3D printing of organic and inorganic materials requires special consideration in both material selection and the process used. This article provides an overview of the the six major processes used for 3D bioprinting: extrusion bioprinting, inkjet printing, selective laser sintering, stereolithography, laser-induced forward transfer bioprinting, and two-photon polymerization.

Induction coils are considered the weakest link in an induction hardening system, so advanced designs and precise fabrication are paramount to ensure long life while producing high quality treated parts. This article describes material selection and fabrication techniques for conventional inductors and new breakthrough designs.

This article presents examples of engineered parts where PEEK (polyether ether ketone) thermoplastics have replaced traditional materials such as stainless steel, aluminum, titanium, and glass.

To learn about the important connection between mechanical engineering and materials science, we turned to five experts with backgrounds in both fields for insight. The panelists share their perspectives on how the two disciplines informed their careers, which types of design challenges can be solved with materials information, and how ASM can improve that connection by leading with a “unity of disciplines” approach. The panelists are Scott Carpenter, Vactronix Scientific; Bertrand Jodoin, University of Ottawa; Vistasp Karbhari, The University of Texas at Arlington; Marina B. Ruggles-Wrenn, Air Force Institute of Technology; and Judith A. Todd, The Pennsylvania State University.

Consumer demand for greater fuel efficiency and a changing regulatory environment have stimulated substantial interest in alternative materials for passenger vehicles. Automotive manufacturers now have a wide variety of choices available, ranging from various grades of steel and aluminum to the most advanced lightweight composite materials. This article describes testing innovations introduced to keep pace with the use of new materials in automobiles.

Today’s materials engineering leadership role is expected to expand and have a greater impact on evolving the organizational, technological, and strategic initiatives of original equipment manufacturers.

This article explores two case studies regarding use of materials data and software educational tools to analyze biocompatibility related to implantable medical devices. The example applications are glass-ceramic scaffolds and suture anchor implants.

The use of coatings to enhance the performance of components is one of the most powerful tools in materials engineering. This article highlights some examples of how thermal spray technologies are used to enhance surface properties for selected applications and industries.

The July and September issues of the Journal of Materials Engineering and Performance (JMEP) were special issues focused on additive manufacturing. The issues were guest edited by William E. Frazier, FASM, Pilgrim Consulting LLC and editor of JMEP; Rick Russell, NASA; Yan Lu, NIST; Brandon D. Ribic, America Makes; and Caroline Vail, NSWC Carderock. The highlighted articles described in this article were selected by Dr. Frazier to showcase the varied topics covered in the special issues.

Titanium boron composite coatings with superior wear performance were selected for use in materials experiments on the International Space Station. The titanium-boron nitride composite coatings were prepared using an atmospheric plasma spray technique from engineered composite powders. The coatings were subjected to extensive characterization and tribological studies. The results show tremendous improvement in the wear performance.

Enhancement of the diffusion bonding process for the development of compact heat exchangers (CHXs) provides an energy efficient solution for high-temperature applications in advanced nuclear reactors and other technologies. However, available information is limited concerning the diffusion bonding (and manufacturing) of CHXs in high temperature applications and associated selection of bonded materials, bonding conditions, mechanical performance, and thermo-fluid characteristics. This article reviews the available knowledge and the ongoing research being conducted to address gaps in information and application.

Significant advancements in metallurgy were highlighted at a special symposium presented at the Materials Science & Technology 2016 conference in Salt Lake City. This article summarizes the topics presented. All six speakers shared examples of the importance of understanding how the specific manufacturing process affects microstructure development in metals. The fundamental understanding of microstructure allows metallurgists to select manufacturing processes and schedules to tailor the microstructure, and therefore mechanical properties and performance, for a particular component.

The Heat Treating Society R&D Committee, under the direction of Michael Pershing, Caterpillar, has compiled a list of organizations conducting research related to heat treating. Each listing includes contact information and selected projects.

Additive manufacturing by itself provides many benefits, but by combining different materials processing techniques like traditional casting with additive manufacturing to create hybrid processes, custom materials can be tailor-made and mass produced for applications with specific performance needs. This article reports on research to create metal-metal interpenetrating phase composite materials using additive manufacturing and casting methods in combination.

Additive manufacturing techniques give the mining industry a chance to revolutionize the conceptualization, prototyping, and production of mining tools, including using WC-Fe, Ni-based matrix coatings that display exceptional properties. The article includes a case study involving the successful utilization of WC-NiCrBSi mixed powder as a protective coating on AISI 9310 steel components to enhance wear resistance and durability for mining tool applications.

NitrideTool software, developed by the the Center for Heat Treating Excellence (CHTE), simulates the gas nitriding of steels to understand nitriding potential, temperature, time, and surface condition.