Environmental Molecular Sciences Laboratory

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Advanced Microstructural Characterization of Metallic Alloys for High Temperature Applications in Automobile Engines

Monday, October 19, 2020
Principal Investigator: 
Arun Devaraj
Lead Institution: 
Pacific Northwest National Laboratory
Project ID: 

Advanced microstructural characterization of next generation propulsion materials can provide material processing-microstructure-mechanical property relationships. In addition, advanced characterization is also crucial for understanding material degradation when exposed to extreme environments of temperature and/or stress. As a part of this project, high temperature Al alloys for use from 300-350oC and high temperature Ni, Fe based alloys developed for 800-950oC developed through innovative alloy composition selection and advanced processing methods from ORNL will be closely complemented with multimodal microstructural characterization of alloy microstructure using state-of-the-art characterization capabilities such as atom probe tomography (APT) and aberration corrected Scanning transmission electron microscopy (STEM) at EMSL. The advanced characterization capabilities housed in the EMSL provides crucial information for optimizing the alloy design for propulsion applications in automobiles.