Microscopic View of Structural Phase Transitions Induced by Shock Waves
10.1126/science.1070375
Crossref journal-article
American Association for the Advancement of Science (AAAS)
Science (221)
Abstract

Multimillion-atom molecular-dynamics simulations are used to investigate the shock-induced phase transformation of solid iron. Above a critical shock strength, many small close-packed grains nucleate in the shock-compressed body-centered cubic crystal growing on a picosecond time scale to form larger, energetically favored grains. A split two-wave shock structure is observed immediately above this threshold, with an elastic precursor ahead of the lagging transformation wave. For even higher shock strengths, a single, overdriven wave is obtained. The dynamics and orientation of the developing close-packed grains depend on the shock strength and especially on the crystallographic shock direction. Orientational relations between the unshocked and shocked regions are similar to those found for the temperature-driven martensitic transformation in iron and its alloys.

Bibliography

Kadau, K., Germann, T. C., Lomdahl, P. S., & Holian, B. L. (2002). Microscopic View of Structural Phase Transitions Induced by Shock Waves. Science, 296(5573), 1681–1684.

Authors 4
  1. Kai Kadau (first)
  2. Timothy C. Germann (additional)
  3. Peter S. Lomdahl (additional)
  4. Brad Lee Holian (additional)
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  44. K.K. would like to thank P. Entel and R. Meyer (Duisburg) for many helpful discussions and support. This work has been supported by the DOE under contract nos. W-7405-ENG-36 and LDRD-DR 2001501 and by the German science council (Deutsche Forschungsgemeinschaft) through the Graduate College “Structure and Dynamics of Heterogeneous Systems” and SFB 445. It is also a pleasure to thank our colleagues S. Grabowski J. Hammerberg R. Ravelo and J. S. Wark. Supporting Online Material www.sciencemag.org/cgi/content/full/296/5573/1681/DC1 Materials and Methods Movies S1 and S2
Dates
Type When
Created 23 years ago (July 27, 2002, 5:54 a.m.)
Deposited 8 months, 1 week ago (Dec. 8, 2024, 2:44 p.m.)
Indexed 2 weeks ago (Aug. 6, 2025, 7:59 a.m.)
Issued 23 years, 2 months ago (May 31, 2002)
Published 23 years, 2 months ago (May 31, 2002)
Published Print 23 years, 2 months ago (May 31, 2002)
Funders 0

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@article{Kadau_2002, title={Microscopic View of Structural Phase Transitions Induced by Shock Waves}, volume={296}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1070375}, DOI={10.1126/science.1070375}, number={5573}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Kadau, Kai and Germann, Timothy C. and Lomdahl, Peter S. and Holian, Brad Lee}, year={2002}, month=may, pages={1681–1684} }