Texture Strengthening of Plates for Ballistic Purposes

Motivated by previous studies in relating texture-based strength to ballistic performance of 5% Ni steel armor, an investigation was initiated to examine other materials, particularly face-centered cubic materials, for possible texture strengthening effects. Theoretical and experimental work were ca...

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Bibliographic Details
Main Authors: Ghosh,Amit K, Paton,Neil E
Format: Report
Language:English
Subjects:
Aluminum alloy 7039
ANISOTROPY
ARMOR
ASH84
AUSTENITE
Ballistics
DEFORMATION
Metallurgy and Metallography
NICKEL ALLOYS
ORIENTATION(DIRECTION)
PE62105A
STEEL
Steel A-286
STRAIN HARDENING
STRAIN RATE
Taylor factors
TERMINAL BALLISTICS
TEXTURE
THREE DIMENSIONAL
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Summary:Motivated by previous studies in relating texture-based strength to ballistic performance of 5% Ni steel armor, an investigation was initiated to examine other materials, particularly face-centered cubic materials, for possible texture strengthening effects. Theoretical and experimental work were carried out side by side, and significant progress in understanding and achieving that goal are reported here. On the theoretical side, (110) and (111) textures were identified as the most strong contributors to through-thickness strength, and hence ballistic resistance. A computer program to calculate Taylor factors from pole figure data by incorporating spatial crystallite orientation distribution function was developed. Furthermore, theoretical modeling of the ballistic performation process validated the previously speculated effects of normal anisotropy as well as showed the effects of other material properties, including strain hardening and strain-rate sensitivity.