43201. MCIC's objective is to provide a comprehensive current resource of technical information on the development and utilization of advanced metal-or ceramic-base materials. The Center is operated by Battelle-Columbus under Contract Number DSA900-74-C-0616 for the U.S. Defense Supply Agency; technical aspects of MCIC operations are monitored by the Army Materials and Mechanics Research Center. The support of these sponsor organizations is gratefully acknowledged. This document was prepared under the sponsorship of the Department of Defense. r-.;either the United States Government nor any person acti11g on behalf of the United States Government assumes any liabil1ty resulting from the use or publication of the information conta1ned in this document or warrants that such use or publication will be free from pr1vately owned rights. Approved for public release; distribution unlim1ted All nghts reserved. This document, or parts thereof. may not be reproduced in any form without written permission of the Metals and Ceram1cs Information Center. .. II i J TABLE OF CONTENTS SUMMARY INTRODUCTION BACKGROUND. Textures in Titanium Deformation Mechanisms Cold-Rolled Textures Annealing Textures. .

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By appropriate thermomechanical processing treatment in the austenite region of a medium carbon 5Ni steel, three different types of textures, each with various degrees of intensity, have been produced in the quenched-and-tempered high-hardness steel armor plates. The various mechanical properties, including tension, through-thickness tension and compression, impact, fatigue, and fracture toughness, together with the ballistic performance of he plates as a function of the intensity of the texture, in particular the (112)+(iii) type, are presented and discussed.

A study was carried out on the effect of specimeh orientation on the sheet tensile properties of several titanium alloys. For these alloys, chemical analysis, microstructure, X-ray pole figures, and sheet tensile properties were determined at lO-depree increments from the rolling to the transverse direction. In addition to the conventional yield strength, tensile strength, and elongation values, strain gages were used to determine Young's modulus and Poisson's ratio. A study of plastic anisotropy was also made.It is shown that several types of textures exist in these alloys and the characteristics of the mechanical properties are anisotropic and related to the texture type. A simple approximation of the anisotropic behavior patterns can be understood-by relating these patterns to single-crystal properties.

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