This specification covers an iron-nickel alloy in the form of bars, forgings, flash-welded rings, and stock for forging, flash-welded rings, or heading.

AMS F Corrosion Heat Resistant Alloys Committee

Multi-Attribute, System-Level Design Process for Automotive Powertrain Electric Drives: An Integrated Approach

08-07-02-000706/05/2018

This article presents an electric drive powertrain design and virtual integration methodology in the context of electric vehicle systems. In the first stage, using the Model-Based System Engineering paradigm, the electric vehicle performance requirements are translated into electric drive target specifications using a system-level vehicle model. Subsequently, a functional electric drive subsystem-level model is developed based on magnetic co-energy and iron losses data obtained from a reference electric machine design. The functional electric drive model is scaled in order to meet the requested specifications, and it is coupled with different 1D (i.e. lumped-parameter) multi-physics sub-models that are later integrated into the electric vehicle system-level model. At the electric drive level the torque ripple and Noise, Vibration and Harshness characteristics are analyzed. At the vehicle level the energy consumption, thermal behavior, and mechanical performances are determined with

Ciceo, Sebastian, Faria, Cassio T., Gyselinck, Johan, Martis, Claudia

Response of Austempering Heat Treatment on Microstructure and Mechanical Property in Different Zones of As-Welded Ductile Iron (DI)

05-11-02-001605/08/2018

Sound ductile iron (DI) welded joints were performed using developed coated electrode and optimized welding parameters including post weld heat treatment (PWHT). Weldments consisting of weld metal, partially melted zone (PMZ), heat affected zone (HAZ) and base metal were austenitized at 900 °C for 2 hour and austempered at 300 °C and 350 °C for three different holding time (1.5 hour, 2 hour and 2.5 hour). In as-weld condition, microstructures of weld metal and PMZ show ledeburitic carbide and alloyed pearlite, but differ with their amount. Whereas microstructure of HAZ shows pearlite with some ledeburitic carbide and base metal shows only ferrite. However, in spite of the significant variation in microstructures at different zones of weldment in as-weld condition, all the zones show similar microstructure of base metal such as bainitic ferrite along with some retained austenite after austempering heat treatment, indicating the response of heat treatment from different zones like base

Sarkar, Tapan, Pal, Tapan Kumar

An Integrated Approach to Constitutive Modeling and Life Prediction for Automotive Materials

2018-01-121304/03/2018

An integrated approach of constitutive modeling and life prediction is presented through introduction of the integrated creep-fatigue theory (ICFT). The ICFT is formulated based on participating deformation and damage mechanisms, which not only describes the cyclic deformation behavior but also the life and fracture mode. Automotive exhaust system materials such as ductile cast iron and austenitic cast steel are used as example materials for demonstration in good agreement with experimental results and metallurgical examinations. This enlightens the understanding of the roles each mechanism plays in low-cycle fatigue (LCF) and thermomechanical (TMF) processes, thus helping material and component design specifically targeting the most damaging mechanism(s) encountered in service.

Wu, Xijia

Automotive Compacted Graphite Iron Castings

J1887_201802 (Current)02/15/2018

This SAE Standard covers the mechanical and physical requirements for Compacted Graphite Iron (CGI) castings used in automotive and allied industries. Requirements in this document include: a Tensile Strength b Yield Strength c Elongation d Graphite Morphology

Metals Technical Committee

Tech Briefs April 2018

18AERP0202/01/2018

Multi-Domain Command and Control (MDC2) Changing the Face of Modern Warfare Loop Thermosyphons Gravity-Driven Two-Phase Cooling for the 21st Century CompactPCI Serial Space A New Embedded System Specification Takes on Extreme Environments Plain Bearings for Aerospace Applications Additive Manufacturing Materials for RF Components NASA CubeSats: Pushing the Boundaries of Technology Content Addressable Memory (CAM) Technologies for Big Data and Intelligent Electronics Enabled By Magneto-Electric Ternary CAM New associative memory approach based on the propagation of spikes provides ultra-low energy search operations. Natural DNA-Based Nonvolatile Resistive Switching Memory Reliable memory devices can be realized within a single macromolecule based on natural DNA. A Mechanistic Analysis of Oxygen Vacancy Driven Conductive Filament Formation in Resistive Random Access Memory Metal/NiO/Metal Structures Study could lead to more efficient electrically switchable resistive random access memory

Elevated Temperature Properties of Cast Irons

J125_201801 (Current)

01/09/2018

The purpose of this SAE Information Report is to provide automotive engineers and designers with a concise statement of the basic characteristics of cast iron under elevated temperature conditions. As such, the report concentrates on general statements regarding these properties with limited illustrative data, anticipating that those who may be interested in more detail will want to use the bibliography provided at the conclusion of the report.

Metals Technical Committee