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LEADER 03777nam 2200805Ia 4500

001 ocm74282624;

003 OCoLC;

005 20141212052108.0;

006 m d f ;

007 cr mn|||||||||;

008 080513s2005 dcua sb f000 0 eng d;

027 a| ARL-TR-3568;

029 0 a| DTICEb| ADA439854;

035 a| (Sirsi) o74282624;

035 a| (OCoLC)74282624;

040 a| DTICEc| DTICEd| GPOd| UtOrBLW;

049 a| ERE#;

074 a| 0324-A-01 (online);

086 0 a| D 101.133:3568;

100 1 a| Kecskes, Laszlo J.=| ^A1033206;

245 10 a| Dynamic devitrification of bulk metallic glasses (BMGs) and composites of BMG with tungsten /c| Laszlo J. Kecskes and Samuel F. Trevino, Robert H. Woodman.;

260 a| Aberdeen Proving Ground, MD :b| U.S. Army Research Laboratory,c| [2005];

300 a| 1 online resource (iv, 25 pages) :b| illustrations.;

336 a| text2| rdacontent;

337 a| computer2| rdamedia;

338 a| online resource2| rdacarrier;

490 1 a| ARL-TR ;v| 3568;

500 a| Title from title screen (viewed May 28, 2010).;

500 a| "August 2005.";

504 a| Includes bibliographical references (p. 12).;

506 a| APPROVED FOR PUBLIC RELEASE NOT AVAILABLE IN MICROFICHE.;

520 a| The penetration behavior of tungsten-bulk metallic glass (BMG) matrix composites is expected to be strongly influenced by the deformation behavior of the BMG matrix. It has been hypothesized that when the BMC matrix, initially in its viscous, deeply undercooled state, is subjected to compressive loads under the rapid time scales during ballistic impact, it may become a liquid without devitrification. We have carried out a series of in-situ x-ray diffraction experiments at the Advanced Photon Source (APS) and the National Synchrotron Light Source (NSLS) on BMG samples while heating them. At the same time, we carried out differential thermal analysis experiments and analyzed the results using the Kissinger method to estimate the critical heating rates necessary to bypass devitrification. The data collected and results show that the heating rates available at either APS or NSLS were insufficient to verify the hypothesis.;

650 0 a| Composite materialsx| Mechanical properties.=| ^A1017709;

650 0 a| Metallic glasses.=| ^A183879;

650 0 a| Tungsten.=| ^A104373;

650 17 a| Ceramics, Refractories and Glass.2| scgdst;

650 27 a| Laminates and Composite Materials.2| scgdst;

650 17 a| Composite materials.2| dtict;

650 17 a| Glass.2| dtict;

650 17 a| Tungsten.2| dtict;

650 27 a| Test and evaluation.2| dtict;

650 27 a| Deformation.2| dtict;

650 27 a| Rates.2| dtict;

650 27 a| Bulk materials.2| dtict;

650 27 a| Light sources.2| dtict;

650 27 a| Scale.2| dtict;

650 27 a| Photons.2| dtict;

650 27 a| Differential thermal analysis.2| dtict;

650 27 a| Synchrotrons.2| dtict;

650 27 a| Ballistics.2| dtict;

650 27 a| Hypotheses.2| dtict;

650 27 a| Behavior.2| dtict;

650 27 a| Heating.2| dtict;

650 27 a| Penetration.2| dtict;

650 27 a| Estimates.2| dtict;

650 27 a| Amorphous materials.2| dtict;

650 27 a| Matrix materials.2| dtict;

650 27 a| X ray diffraction.2| dtict;

650 27 a| Impact.2| dtict;

653 2 a| PE622195A;

700 1 a| Woodman, Robert H.=| ^A1033208;

700 1 a| Trevino, Samuel F.=| ^A1033209;

710 2 a| U.S. Army Research Laboratory.=| ^A367731;

830 0 a| ARL-TR (Aberdeen Proving Ground, Md.) ; 3568.?| UNAUTHORIZED;

856 40 u| https://purl.fdlp.gov/GPO/LPS122565;

949 a| Click on web addressw| ASISh| JOYNER94;

998 a| 2285006;

998 a| u2285006;

596 a| 1;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 2285006-1001l| JNETm| JOYNERr| Ys| Yt| JNE1DOu| 7/22/2010x| EDOCUMENTz| JERESOURCE;

Dynamic devitrification of bulk metallic glasses (BMGs) and composites of BMG with tungsten / Laszlo J. Kecskes and Samuel F. Trevino, Robert H. Woodman.

Author/creator	Kecskes, Laszlo J.
Other author	Woodman, Robert H.
Other author	Trevino, Samuel F.
Other author	U.S. Army Research Laboratory.
Format	Electronic
Publication Info	Aberdeen Proving Ground, MD : U.S. Army Research Laboratory, [2005]
Description	1 online resource (iv, 25 pages) : illustrations.
Supplemental Content	https://purl.fdlp.gov/GPO/LPS122565
Subjects	Composite materials--Mechanical properties. Metallic glasses. Tungsten.

Series	ARL-TR ; 3568 ARL-TR (Aberdeen Proving Ground, Md.) ; 3568. UNAUTHORIZED
Abstract	The penetration behavior of tungsten-bulk metallic glass (BMG) matrix composites is expected to be strongly influenced by the deformation behavior of the BMG matrix. It has been hypothesized that when the BMC matrix, initially in its viscous, deeply undercooled state, is subjected to compressive loads under the rapid time scales during ballistic impact, it may become a liquid without devitrification. We have carried out a series of in-situ x-ray diffraction experiments at the Advanced Photon Source (APS) and the National Synchrotron Light Source (NSLS) on BMG samples while heating them. At the same time, we carried out differential thermal analysis experiments and analyzed the results using the Kissinger method to estimate the critical heating rates necessary to bypass devitrification. The data collected and results show that the heating rates available at either APS or NSLS were insufficient to verify the hypothesis.
General note	Title from title screen (viewed May 28, 2010).
General note	"August 2005."
Bibliography note	Includes bibliographical references (p. 12).
Access restriction	APPROVED FOR PUBLIC RELEASE NOT AVAILABLE IN MICROFICHE.
Technical rpt#	ARL-TR-3568
GPO item number	0324-A-01 (online)
Govt. docs number	D 101.133:3568

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Dynamic devitrification of bulk metallic glasses (BMGs) and composites of BMG with tungsten / Laszlo J. Kecskes and Samuel F. Trevino, Robert H. Woodman.

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