Heavy ion irradiation effects on CrFeMnNi and AlCrFeMnNi high entropy alloys

Youxing Chen; Di Chen; Jordan Weaver; Jonathan Gigax; Yongqiang Wang; Nathan A. Mara; Saryu Fensin; Stuart A. Maloy; Amit Misra; Nan Li

doi:10.1016/j.jnucmat.2022.154163

Heavy ion irradiation effects on CrFeMnNi and AlCrFeMnNi high entropy alloys

Youxing Chen, Di Chen, Jordan Weaver, Jonathan Gigax, Yongqiang Wang, Nathan A. Mara, Saryu Fensin, Stuart A. Maloy, Amit Misra, Nan Li

Chemical Engineering and Materials Science

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Co-free but Al-included medium/high entropy alloys (M/HEAs) have gained increasing interests due to their lower cost and the potential to tune the multi-phase microstructure. The irradiation response of two Co-free HEAs, face-centered cubic (FCC) CrFeMnNi with limited Cr enriched α′ phase and body-centered cubic (BCC) AlCrFeMnNi with B2 s phase and nanoprecipitates were explored. Ion irradiations using 5 MeV Fe²⁺ ions were performed at 500 °C to a peak fluence of 50 and/or 100 displacements per atom (dpa). In dual-phase AlCrFeMnNi, there was no significant radiation induced segregation or chemical intermixing at the coherent matrix (FeCrMn-rich)/second phase (AlNi-rich) boundaries. In CrFeMnNi, limited voids were only detected at the peak damage location of ∼ 50 dpa. On the other hand, voids were widely distributed in AlCrFeMnNi: under 50 and 100 dpa irradiation conditions, voids were found with larger dimension and denser distribution in the FeCrMn-rich matrix, smaller and slightly lower density in an AlNi-rich second phase. In addition, the diameter of the FeCMn-rich nanoprecipitates didn't reveal any tendency of dissolution or growth. This is correlated with their superior structural stability against irradiation. Significant radiation-induced hardening (increases from 3.8 ± 0.2 GPa to 4.7 ± 0.6 GPa) was measured in CrFeMnNi, but only ∼ 4% hardness increase (from 7.4 ± 0.8 GPa to 7.7 ± 0.4 GPa) was noted in AlCrFeMnNi. In addition to the radiation-induced defects, such as voids, dislocation loops and point defects, other factors, such as chemical short-range ordering may play an important role.

Original language	English (US)
Article number	154163
Journal	Journal of Nuclear Materials
Volume	574
DOIs	https://doi.org/10.1016/j.jnucmat.2022.154163
State	Published - Feb 2023

Bibliographical note

Funding Information:
The authors acknowledge the support of the Los Alamos National Laboratory (LANL)/Laboratory Directed Research & Development (LDRD) and Institute for Materials Science (IMS) Program. This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. DOE under contract 89233218CNA000001.

Publisher Copyright:
© 2022

Publisher link

10.1016/j.jnucmat.2022.154163

Find It

Find It at U of M Libraries

Cite this

@article{157ae2e7839541888b203800f8106a22,

title = "Heavy ion irradiation effects on CrFeMnNi and AlCrFeMnNi high entropy alloys",

abstract = "Co-free but Al-included medium/high entropy alloys (M/HEAs) have gained increasing interests due to their lower cost and the potential to tune the multi-phase microstructure. The irradiation response of two Co-free HEAs, face-centered cubic (FCC) CrFeMnNi with limited Cr enriched α′ phase and body-centered cubic (BCC) AlCrFeMnNi with B2 s phase and nanoprecipitates were explored. Ion irradiations using 5 MeV Fe2+ ions were performed at 500 °C to a peak fluence of 50 and/or 100 displacements per atom (dpa). In dual-phase AlCrFeMnNi, there was no significant radiation induced segregation or chemical intermixing at the coherent matrix (FeCrMn-rich)/second phase (AlNi-rich) boundaries. In CrFeMnNi, limited voids were only detected at the peak damage location of ∼ 50 dpa. On the other hand, voids were widely distributed in AlCrFeMnNi: under 50 and 100 dpa irradiation conditions, voids were found with larger dimension and denser distribution in the FeCrMn-rich matrix, smaller and slightly lower density in an AlNi-rich second phase. In addition, the diameter of the FeCMn-rich nanoprecipitates didn't reveal any tendency of dissolution or growth. This is correlated with their superior structural stability against irradiation. Significant radiation-induced hardening (increases from 3.8 ± 0.2 GPa to 4.7 ± 0.6 GPa) was measured in CrFeMnNi, but only ∼ 4% hardness increase (from 7.4 ± 0.8 GPa to 7.7 ± 0.4 GPa) was noted in AlCrFeMnNi. In addition to the radiation-induced defects, such as voids, dislocation loops and point defects, other factors, such as chemical short-range ordering may play an important role.",

author = "Youxing Chen and Di Chen and Jordan Weaver and Jonathan Gigax and Yongqiang Wang and Mara, {Nathan A.} and Saryu Fensin and Maloy, {Stuart A.} and Amit Misra and Nan Li",

note = "Funding Information: The authors acknowledge the support of the Los Alamos National Laboratory (LANL)/Laboratory Directed Research & Development (LDRD) and Institute for Materials Science (IMS) Program. This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. DOE under contract 89233218CNA000001. Publisher Copyright: {\textcopyright} 2022",

year = "2023",

month = feb,

doi = "10.1016/j.jnucmat.2022.154163",

language = "English (US)",

volume = "574",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

TY - JOUR

T1 - Heavy ion irradiation effects on CrFeMnNi and AlCrFeMnNi high entropy alloys

AU - Chen, Youxing

AU - Chen, Di

AU - Weaver, Jordan

AU - Gigax, Jonathan

AU - Wang, Yongqiang

AU - Mara, Nathan A.

AU - Fensin, Saryu

AU - Maloy, Stuart A.

AU - Misra, Amit

AU - Li, Nan

N1 - Funding Information: The authors acknowledge the support of the Los Alamos National Laboratory (LANL)/Laboratory Directed Research & Development (LDRD) and Institute for Materials Science (IMS) Program. This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is operated by Triad National Security, LLC, for the National Nuclear Security Administration of the U.S. DOE under contract 89233218CNA000001. Publisher Copyright: © 2022

PY - 2023/2

Y1 - 2023/2

N2 - Co-free but Al-included medium/high entropy alloys (M/HEAs) have gained increasing interests due to their lower cost and the potential to tune the multi-phase microstructure. The irradiation response of two Co-free HEAs, face-centered cubic (FCC) CrFeMnNi with limited Cr enriched α′ phase and body-centered cubic (BCC) AlCrFeMnNi with B2 s phase and nanoprecipitates were explored. Ion irradiations using 5 MeV Fe2+ ions were performed at 500 °C to a peak fluence of 50 and/or 100 displacements per atom (dpa). In dual-phase AlCrFeMnNi, there was no significant radiation induced segregation or chemical intermixing at the coherent matrix (FeCrMn-rich)/second phase (AlNi-rich) boundaries. In CrFeMnNi, limited voids were only detected at the peak damage location of ∼ 50 dpa. On the other hand, voids were widely distributed in AlCrFeMnNi: under 50 and 100 dpa irradiation conditions, voids were found with larger dimension and denser distribution in the FeCrMn-rich matrix, smaller and slightly lower density in an AlNi-rich second phase. In addition, the diameter of the FeCMn-rich nanoprecipitates didn't reveal any tendency of dissolution or growth. This is correlated with their superior structural stability against irradiation. Significant radiation-induced hardening (increases from 3.8 ± 0.2 GPa to 4.7 ± 0.6 GPa) was measured in CrFeMnNi, but only ∼ 4% hardness increase (from 7.4 ± 0.8 GPa to 7.7 ± 0.4 GPa) was noted in AlCrFeMnNi. In addition to the radiation-induced defects, such as voids, dislocation loops and point defects, other factors, such as chemical short-range ordering may play an important role.

AB - Co-free but Al-included medium/high entropy alloys (M/HEAs) have gained increasing interests due to their lower cost and the potential to tune the multi-phase microstructure. The irradiation response of two Co-free HEAs, face-centered cubic (FCC) CrFeMnNi with limited Cr enriched α′ phase and body-centered cubic (BCC) AlCrFeMnNi with B2 s phase and nanoprecipitates were explored. Ion irradiations using 5 MeV Fe2+ ions were performed at 500 °C to a peak fluence of 50 and/or 100 displacements per atom (dpa). In dual-phase AlCrFeMnNi, there was no significant radiation induced segregation or chemical intermixing at the coherent matrix (FeCrMn-rich)/second phase (AlNi-rich) boundaries. In CrFeMnNi, limited voids were only detected at the peak damage location of ∼ 50 dpa. On the other hand, voids were widely distributed in AlCrFeMnNi: under 50 and 100 dpa irradiation conditions, voids were found with larger dimension and denser distribution in the FeCrMn-rich matrix, smaller and slightly lower density in an AlNi-rich second phase. In addition, the diameter of the FeCMn-rich nanoprecipitates didn't reveal any tendency of dissolution or growth. This is correlated with their superior structural stability against irradiation. Significant radiation-induced hardening (increases from 3.8 ± 0.2 GPa to 4.7 ± 0.6 GPa) was measured in CrFeMnNi, but only ∼ 4% hardness increase (from 7.4 ± 0.8 GPa to 7.7 ± 0.4 GPa) was noted in AlCrFeMnNi. In addition to the radiation-induced defects, such as voids, dislocation loops and point defects, other factors, such as chemical short-range ordering may play an important role.

UR - http://www.scopus.com/inward/record.url?scp=85143727441&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85143727441&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2022.154163

DO - 10.1016/j.jnucmat.2022.154163

M3 - Article

AN - SCOPUS:85143727441

SN - 0022-3115

VL - 574

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

M1 - 154163

ER -

Heavy ion irradiation effects on CrFeMnNi and AlCrFeMnNi high entropy alloys

Abstract

Bibliographical note

Publisher link

Find It

Other files and links

Fingerprint

Cite this