Accession Number : ADA189429

Title :   Ductile Failure.

Descriptive Note : Summary rept.,

Corporate Author : BROWN UNIV PROVIDENCE RI

Personal Author(s) : Kushner, A S

PDF Url : ADA189429

Report Date : 28 Sep 1987

Pagination or Media Count : 8

Abstract : The aim of this work on the ductile failure is to provide a framework for quantitatively relating macroscopic measures of fracture toughness and ductility to micro-structural mechanisms of ductile fracture. Microvoid nucleation and growth is the principal mechanism of ductile fracture in metals; the voids and mainly nucleate at second phase particles, by particle cracking or by decohesion of the particle-matrix interface, and final rupture involves the growth of neighboring voids to coalescence. Although the role of void nucleation and growth in ductile failure of metals is now well known, the details of the mechanism governing this failure process are not fully understood. A detailed characterization of porosity evolution is necessary to relate microstructural descriptions of the ductile rupture process quantitatively to macroscopic measures of ductility.

Descriptors :   *DUCTILITY, *FRACTURE(MECHANICS), *FAILURE(MECHANICS), *HIGH STRENGTH ALLOYS, CRACKS, METALS, MICROSTRUCTURE, NUCLEATION, PARTICLES, POROSITY, RUPTURE, TOUGHNESS, NUMERICAL METHODS AND PROCEDURES, NOTCH SENSITIVITY

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE