Temperature effect of elastic anisotropy and internal strain development in advanced nanostructured alloys: An in-situ synchrotron X-ray investigation

Yingye Gan; Kun Mo; Di Yun; David T. Hoelzer; Yinbin Miao; Xiang Liu; Kuan Che Lan; Jun Sang Park; Jonathan Almer; Tianyi Chen; Huijuan Zhao

doi:10.1016/j.msea.2017.03.068

Temperature effect of elastic anisotropy and internal strain development in advanced nanostructured alloys: An in-situ synchrotron X-ray investigation

Yingye Gan, Kun Mo, Di Yun, David T. Hoelzer, Yinbin Miao, Xiang Liu, Kuan Che Lan, Jun Sang Park, Jonathan Almer, Tianyi Chen, Huijuan Zhao

Alloy Behavior & Design

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

10 Scopus citations

Abstract

Nanostructured ferritic alloys (NFAs) are promising structural materials for advanced nuclear systems due to their exceptional radiation tolerance and high-temperature mechanical properties. Their remarkable properties result from the ultrafine ultrahigh density Y-Ti-O nanoclusters dispersed within the ferritic matrix. In this work, we performed in-situ synchrotron X-ray diffraction tests to study the tensile deformation process of the three types of NFAs: 9YWTV, 14YWT-sm13, and 14YWT-sm170 at both room temperature and elevated temperatures. A technique was developed, combining Kroner's model and X-ray measurement, to determine the intrinsic monocrystal elastic-stiffness constants, and polycrystal Young's modulus and Poisson's ratio of the NFAs. Temperature dependence of elastic anisotropy was observed in the NFAs. An analysis of intergranular strain and strengthening factors determined that 14YWT-sm13 had a higher resistance to temperature softening compared to 9YWTV, attributed to the more effective nanoparticle strengthening during high-temperature mechanical loading.

Original language	English
Pages (from-to)	53-61
Number of pages	9
Journal	Materials Science and Engineering: A
Volume	692
DOIs	https://doi.org/10.1016/j.msea.2017.03.068
State	Published - Apr 24 2017

Funding

We gratefully acknowledge the support of the Nuclear Energy University Program (NEUP) program under Award Number 13-5408 from the Department of Energy. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility Operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.

Funders	Funder number
DOE Office of Science
U.S. Department of Energy
Office of Science
Argonne National Laboratory	DE-AC02-06CH11357

Keywords

Deformation
High-energy X-ray diffraction
In-situ tensile test
Nanostructure
Oxide dispersion strengthened (ODS) alloy

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10.1016/j.msea.2017.03.068

Cite this

Gan, Y., Mo, K., Yun, D., Hoelzer, D. T., Miao, Y., Liu, X., Lan, K. C., Park, J. S., Almer, J., Chen, T., & Zhao, H. (2017). Temperature effect of elastic anisotropy and internal strain development in advanced nanostructured alloys: An in-situ synchrotron X-ray investigation. Materials Science and Engineering: A, 692, 53-61. https://doi.org/10.1016/j.msea.2017.03.068

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title = "Temperature effect of elastic anisotropy and internal strain development in advanced nanostructured alloys: An in-situ synchrotron X-ray investigation",

abstract = "Nanostructured ferritic alloys (NFAs) are promising structural materials for advanced nuclear systems due to their exceptional radiation tolerance and high-temperature mechanical properties. Their remarkable properties result from the ultrafine ultrahigh density Y-Ti-O nanoclusters dispersed within the ferritic matrix. In this work, we performed in-situ synchrotron X-ray diffraction tests to study the tensile deformation process of the three types of NFAs: 9YWTV, 14YWT-sm13, and 14YWT-sm170 at both room temperature and elevated temperatures. A technique was developed, combining Kroner's model and X-ray measurement, to determine the intrinsic monocrystal elastic-stiffness constants, and polycrystal Young's modulus and Poisson's ratio of the NFAs. Temperature dependence of elastic anisotropy was observed in the NFAs. An analysis of intergranular strain and strengthening factors determined that 14YWT-sm13 had a higher resistance to temperature softening compared to 9YWTV, attributed to the more effective nanoparticle strengthening during high-temperature mechanical loading.",

keywords = "Deformation, High-energy X-ray diffraction, In-situ tensile test, Nanostructure, Oxide dispersion strengthened (ODS) alloy",

author = "Yingye Gan and Kun Mo and Di Yun and Hoelzer, {David T.} and Yinbin Miao and Xiang Liu and Lan, {Kuan Che} and Park, {Jun Sang} and Jonathan Almer and Tianyi Chen and Huijuan Zhao",

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AU - Gan, Yingye

AU - Mo, Kun

AU - Yun, Di

AU - Hoelzer, David T.

AU - Miao, Yinbin

AU - Liu, Xiang

AU - Lan, Kuan Che

AU - Park, Jun Sang

AU - Almer, Jonathan

AU - Chen, Tianyi

AU - Zhao, Huijuan

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N2 - Nanostructured ferritic alloys (NFAs) are promising structural materials for advanced nuclear systems due to their exceptional radiation tolerance and high-temperature mechanical properties. Their remarkable properties result from the ultrafine ultrahigh density Y-Ti-O nanoclusters dispersed within the ferritic matrix. In this work, we performed in-situ synchrotron X-ray diffraction tests to study the tensile deformation process of the three types of NFAs: 9YWTV, 14YWT-sm13, and 14YWT-sm170 at both room temperature and elevated temperatures. A technique was developed, combining Kroner's model and X-ray measurement, to determine the intrinsic monocrystal elastic-stiffness constants, and polycrystal Young's modulus and Poisson's ratio of the NFAs. Temperature dependence of elastic anisotropy was observed in the NFAs. An analysis of intergranular strain and strengthening factors determined that 14YWT-sm13 had a higher resistance to temperature softening compared to 9YWTV, attributed to the more effective nanoparticle strengthening during high-temperature mechanical loading.

AB - Nanostructured ferritic alloys (NFAs) are promising structural materials for advanced nuclear systems due to their exceptional radiation tolerance and high-temperature mechanical properties. Their remarkable properties result from the ultrafine ultrahigh density Y-Ti-O nanoclusters dispersed within the ferritic matrix. In this work, we performed in-situ synchrotron X-ray diffraction tests to study the tensile deformation process of the three types of NFAs: 9YWTV, 14YWT-sm13, and 14YWT-sm170 at both room temperature and elevated temperatures. A technique was developed, combining Kroner's model and X-ray measurement, to determine the intrinsic monocrystal elastic-stiffness constants, and polycrystal Young's modulus and Poisson's ratio of the NFAs. Temperature dependence of elastic anisotropy was observed in the NFAs. An analysis of intergranular strain and strengthening factors determined that 14YWT-sm13 had a higher resistance to temperature softening compared to 9YWTV, attributed to the more effective nanoparticle strengthening during high-temperature mechanical loading.

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KW - High-energy X-ray diffraction

KW - In-situ tensile test

KW - Nanostructure

KW - Oxide dispersion strengthened (ODS) alloy

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Temperature effect of elastic anisotropy and internal strain development in advanced nanostructured alloys: An in-situ synchrotron X-ray investigation

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