Abstract
A full picture of tensile deformation mechanism evolution in the FCC-to-HCP transformation-induced plasticity high entropy alloy (TRIP-HEA) was revealed by real-time in situ neutron diffraction. Three transition points, i.e. the triggering of TRIP in the FCC phase and the activation of single and multiple twinning in the HCP phase, were identified to result in significant stress redistribution. Accordingly, four deformation stages with distinct phase-specific work-hardening behaviors were recognized. It was concluded that the easily-triggered persisting TRIP and the work-hardening potential of the HCP contribute together to the persisting bulk work-hardening.
| Original language | English |
|---|---|
| Pages (from-to) | 620-626 |
| Number of pages | 7 |
| Journal | Materials Research Letters |
| Volume | 6 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2 2018 |
Bibliographical note
Publisher Copyright:© 2018, © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
Funding
This work was supported by the US Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. Neutron scattering was conducted at the Spallation Neutron Source (SNS), which is a DOE Office of Science User Facility operated by ORNL. This work was supported by the US Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. Neutron scattering was conducted at the Spallation Neutron Source (SNS), which is a DOE Office of Science User Facility operated by ORNL. We thank Dr. Q. Xie and Dr. A.D. Stoica in ORNL for their help with the data reduction of texture measurement by neutron diffraction. This work was supported by the US Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. Neutron scattering was conducted at the Spallation Neutron Source (SNS), which is a DOE Office of Science User Facility operated by ORNL. We thank Dr. Q. Xie and Dr. A.D. Stoica in ORNL for their help with the data reduction of texture measurement by neutron diffraction. This work was supported by the US Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. Neutron scattering was conducted at the Spallation Neutron Source (SNS), which is a DOE Office of Science User Facility operated by ORNL.
| Funders | Funder number |
|---|---|
| US Department of Energy | |
| U.S. Department of Energy | DE-AC05-00OR22725 |
| Office of Science | |
| Basic Energy Sciences | |
| Division of Materials Sciences and Engineering |
Keywords
- In situ neutron diffraction
- dual phase
- high entropy alloy
- phase transformation
- twinning