Serration Behavior of High-Entropy Alloys


Lateral surfaces of compressively-fractured samples at<br/>773 K at strain rates of (a) 2 × 10<sup>-3</sup>/s, (b) 2 × 10<sup>-4</sup>/s,<br/>and (c) 5 × 10<sup>-5</sup>/s, with orange arrows indicating the<br/>fracture planes, and red-dashed rectangles<br/>indicating the cracks
Lateral surfaces of compressively-fractured samples at
773 K at strain rates of (a) 2 × 10-3/s, (b) 2 × 10-4/s,
and (c) 5 × 10-5/s, with orange arrows indicating the
fracture planes, and red-dashed rectangles
indicating the cracks
University of Illinois at Urbana-Champaign
Website:  University of Illinois
Award Number:  FE0011194
Project Duration:  10/01/2013 – 09/30/2018
Total Award Value:  $300,000
DOE Share:  $300,000
Performer Share:  $0
Technology Area:  University Training and Research
Key Technology:  High Performance Materials
Location:  Champaign, Illinois

Project Description

A novel statistical model developed by the PI will be applied to the study of serration behaviors in High-Entropy Alloys (HEAs) under different conditions (covering a wide range of strain rates, temperatures, and compositions, compression and tension behaviors) to elucidate the underlying mechanisms of plastic deformation in HEAs. The model will be used to predict fracture strength and creep life.

Project Benefits

This project will lead to improved understanding of serration behavior of high-entropy alloys. The tools developed under this project will enhance the ability to decrease the time and cost required to develop new materials more traditional trial based methodologies can. Overall, improvement to high-temperature advanced-materials will promote the development of advanced power plant designs that can operate at higher temperatures and pressures, leading to improvements in efficiency and operational flexibility, resulting in lower capital and operating costs.

Contact Information

Federal Project Manager 
Richard Dunst:
Technology Manager 
Briggs White:
Principal Investigator 
Karin Dahmen:

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