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Structural Dynamics of Polycrystals under Shock Compression Observed via Nanosecond Time-resolved X-ray Diffraction

Published online by Cambridge University Press:  18 March 2013

Kazutaka G. Nakamura ,
Jianbo Hu ,
Kouhei Ichiyanagi ,
Nobuaki Kawai  and
Shin-ichi Adachi
Kazutaka G. Nakamura
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, R3-10, 4259 Nagatsuta, Yokohama 226-8503, Japan
Jianbo Hu
Affiliation:
Materials and Structures Laboratory, Tokyo Institute of Technology, R3-10, 4259 Nagatsuta, Yokohama 226-8503, Japan
Kouhei Ichiyanagi
Affiliation:
Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8562, Japan
Nobuaki Kawai
Affiliation:
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Yoshinodai 3-1-1, Sagamihara 252-5210, Japan
Shin-ichi Adachi
Affiliation:
Photon Factory, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba 305-0801, Japan
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Abstract

Dynamics of structural phase transition in polycrystalline samples (tetragonal stabilized zirconia and bismuth) under laser-shock compression has been studied using nanosecond time-resolved X-ray diffraction technique based on synchrotron radiation. Tetragonal zirconia shows the structural phase transition to the monoclinic phase within 20 ns during shock compression without any intermediate and reverts back to the tetragonal phase during pressure release. Bismuth shows more complex phase transition dynamics. The Bi-I phase, which is the stable phase at ambient pressure and temperature, transfers to Bi-V phase within 4 ns under shock compression and gradually reverts back following the path of Bi-V →Bi-III → Bi-II → Bi-I within 30 ns during pressure release.

Keywords

x-ray diffraction (XRD)phase transformationpolycrystal
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1528: Symposium VV – Advanced Materials Exploration with Neutrons and Synchrotron X-Rays , 2013 , mrsf12-1528-vv02-04
Copyright
Copyright © Materials Research Society 2013

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References

REFERENCES

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