Accession Number:

ADA248701

Title:

Mechanisms of Fracture and Creep of Structural Alloys

Descriptive Note:

Annual rept. no. 4, 1 Dec 1990-31 Dec 1991,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

Report Date:

1992-03-30

Pagination or Media Count:

26.0

Abstract:

Progress is reviewed for a research program which focuses on two aspects which limit the performance of structural alloys. First, in a study generic to a wide range of materials, we are determining the mechanisms, as well as local failure criteria, by which voids or pores grow and link during ductile fracture due to damage accumulation. Secondly, in a study focused specifically at high temperature titanium alloys, we are examining the elevated temperature strength and deformation behavior of a novel, age-hardenable beta titanium alloy. Progress for the period December 1, 1990 to December 31, 1991 is reviewed for the following projects 1 modeling the effects of stress state on void linking, 2 three-dimensional void growth and linking during ductile fracture, and 3 elevated temperature behavior of a novel age-hardenable beta titanium alloy.

Subject Categories:

  • Physical Chemistry
  • Metallurgy and Metallography
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE