Metallurgical analysis and computer simulation of a solid steel sphere under shock loading

James N. Wilson; Javad Hashemi; Darryl James; Necip Güven; Tim Dallas; Kurtis Kuhrts; Bret Combs; Michael Hale; Grant Willson

doi:10.1080/08957950108200998

Metallurgical analysis and computer simulation of a solid steel sphere under shock loading

James N. Wilson, Javad Hashemi, Darryl James, Necip Güven, Tim Dallas, Kurtis Kuhrts, Bret Combs, Michael Hale, Grant Willson

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

Abstract

An explosive-based spherical shock-recovery system was used to load an annealed solid steel sphere. The hydrocode CTH was utilized to model the explosive-metal interaction. Based on the simulation results, pressures reached as high as 100 GPa (1 Mbar) at the surface and converged to 1.25 TPa (12.5 Mbar) at the center of the sphere. As the computer simulation predicted, post-shock examination of the recovered sphere revealed a large void at its center created as a result of strong tensile waves emanating from the surface. Micro-hardness measurements showed a hardness at the surface of the sphere approximately twice the hardness at its center. X-ray analysis of the pre and post shocked samples revealed no permanent phase transformation.

Original language	English
Pages (from-to)	1-14
Number of pages	14
Journal	High Pressure Research
Volume	21
Issue number	1
DOIs	https://doi.org/10.1080/08957950108200998
State	Published - 2001

Keywords

Hydrocode simulation
Microhardness
Microstructure
Shock compression
Shock loading
Steel

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10.1080/08957950108200998

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title = "Metallurgical analysis and computer simulation of a solid steel sphere under shock loading",

abstract = "An explosive-based spherical shock-recovery system was used to load an annealed solid steel sphere. The hydrocode CTH was utilized to model the explosive-metal interaction. Based on the simulation results, pressures reached as high as 100 GPa (1 Mbar) at the surface and converged to 1.25 TPa (12.5 Mbar) at the center of the sphere. As the computer simulation predicted, post-shock examination of the recovered sphere revealed a large void at its center created as a result of strong tensile waves emanating from the surface. Micro-hardness measurements showed a hardness at the surface of the sphere approximately twice the hardness at its center. X-ray analysis of the pre and post shocked samples revealed no permanent phase transformation.",

keywords = "Hydrocode simulation, Microhardness, Microstructure, Shock compression, Shock loading, Steel",

author = "Wilson, {James N.} and Javad Hashemi and Darryl James and Necip G{\"u}ven and Tim Dallas and Kurtis Kuhrts and Bret Combs and Michael Hale and Grant Willson",

note = "Funding Information: The authors wish to acknowledge financial support from the DOE through the Amarillo National Resources Center For Plutonium (ANRCP) under Grant No. 95-05-0380-188. The authors would like to thank Dr. Carl A. Beard of ANRCP for administrative assistance and support. The authors would also like to thank Dr. Gene Hertel from Sandia National Laboratories for his extensive assistance with CTH.",

year = "2001",

doi = "10.1080/08957950108200998",

language = "English",

volume = "21",

pages = "1--14",

journal = "High Pressure Research",

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T1 - Metallurgical analysis and computer simulation of a solid steel sphere under shock loading

AU - Wilson, James N.

AU - Hashemi, Javad

AU - James, Darryl

AU - Güven, Necip

AU - Dallas, Tim

AU - Kuhrts, Kurtis

AU - Combs, Bret

AU - Hale, Michael

AU - Willson, Grant

N1 - Funding Information: The authors wish to acknowledge financial support from the DOE through the Amarillo National Resources Center For Plutonium (ANRCP) under Grant No. 95-05-0380-188. The authors would like to thank Dr. Carl A. Beard of ANRCP for administrative assistance and support. The authors would also like to thank Dr. Gene Hertel from Sandia National Laboratories for his extensive assistance with CTH.

PY - 2001

Y1 - 2001

N2 - An explosive-based spherical shock-recovery system was used to load an annealed solid steel sphere. The hydrocode CTH was utilized to model the explosive-metal interaction. Based on the simulation results, pressures reached as high as 100 GPa (1 Mbar) at the surface and converged to 1.25 TPa (12.5 Mbar) at the center of the sphere. As the computer simulation predicted, post-shock examination of the recovered sphere revealed a large void at its center created as a result of strong tensile waves emanating from the surface. Micro-hardness measurements showed a hardness at the surface of the sphere approximately twice the hardness at its center. X-ray analysis of the pre and post shocked samples revealed no permanent phase transformation.

AB - An explosive-based spherical shock-recovery system was used to load an annealed solid steel sphere. The hydrocode CTH was utilized to model the explosive-metal interaction. Based on the simulation results, pressures reached as high as 100 GPa (1 Mbar) at the surface and converged to 1.25 TPa (12.5 Mbar) at the center of the sphere. As the computer simulation predicted, post-shock examination of the recovered sphere revealed a large void at its center created as a result of strong tensile waves emanating from the surface. Micro-hardness measurements showed a hardness at the surface of the sphere approximately twice the hardness at its center. X-ray analysis of the pre and post shocked samples revealed no permanent phase transformation.

KW - Hydrocode simulation

KW - Microhardness

KW - Microstructure

KW - Shock compression

KW - Shock loading

KW - Steel

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DO - 10.1080/08957950108200998

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VL - 21

SP - 1

EP - 14

JO - High Pressure Research

JF - High Pressure Research

IS - 1

ER -

Metallurgical analysis and computer simulation of a solid steel sphere under shock loading

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Keywords

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