Accession Number : ADA189725

Title :   Fundamental Studies on High Temperature Deformation Recrystallization, and Grain Growth of Two-Phase Materials.

Descriptive Note : Interim technical rept. 1 Dec 86-30 Nov 87,

Corporate Author : MARYLAND UNIV COLLEGE PARK DEPT OF CHEMICAL AND NUCLEAR ENGINEERING

Personal Author(s) : Ankem, S ; Grewal, G ; Vijayshankar, M N

PDF Url : ADA189725

Report Date : Jan 1988

Pagination or Media Count : 132

Abstract : Two-phase materials are technologically important because optimum properties can be obtained by a proper combination of the two phases. Among these materials, two phase Titanium alloys are of particular interest for high temperature aerospace applications. However, there is a lack of understanding in the areas of high temperature deformation, recrystallization and grain-growth behavior of two-phase alloys in terms of the properties of the component phases. Such an understanding is essential to develop new titanium alloys with greater high temperature strength and stability for high temperature applications. The lack of understanding is due to the complex deformation behavior of these two-phase materials. Whenever a material comprising two or more phases is subjected to stress, the component phases deform differently and this results in inhomogeneous strain and stress distributions. In addition, interaction stresses develop as a result of interactions between the deforming phases. For these reasons, the deformation behavior of two-phase materials cannot be explained by the simple law of mixture rule.

Descriptors :   *DEFORMATION, *GRAIN GROWTH, *TITANIUM ALLOYS, AEROSPACE SYSTEMS, ALLOYS, BEHAVIOR, DISTRIBUTION, HIGH STRENGTH, HIGH TEMPERATURE, INTERACTIONS, MATERIALS, OPTIMIZATION, PHASE, PHASE STUDIES, RECRYSTALLIZATION, STRESSES, TWO PHASE FLOW

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE