Damage in sheet metal forming. I. Physical behavior

Journal Article · Wed Sep 01 00:00:00 EDT 1982 · Acta Metall.; (United States)

DOI:https://doi.org/10.1016/0001-6160(82)90095-5· OSTI ID:5924277

Schmitt, J H; Jalinier, J M

It is well established that ductile fracture occurs by nucleation, growth and coalescence of voids generally associated with particles. However, volume damage is present in the material at the first stage of the plastic deformation and, therefore, has an influence on the plastic behavior of the material. Metallographical observations and relative density change measurements show that there exist two main damage mechanisms: either decohesion at the particle-matrix interface or failure of the particles. In both cases, an analysis of the evolution of damage is performed and a model is proposed. A general law of void growth according to the strain and strain path is then established for both damage mechanisms.

• Research Organization: Lab' de Physique et Technologie des Materiaux, Lab' Associe au C.N.R.S. No. 155, Greco C.N.R.S. ''Grandes Deformations et Endommagement'', Univ' de Metz, Ile du Saulcy, 57000 Metz
• OSTI ID: 5924277
• Journal Information: Acta Metall.; (United States), Vol. 30:9
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
METALS
DUCTILE-BRITTLE TRANSITIONS
FRACTURE MECHANICS
NUCLEATION
PLASTICITY
DAMAGE
DEFORMATION
DENSITY
METALLOGRAPHY
PARTICLES
SHEETS
SIMULATION
STRAINS
VOLUME
ELEMENTS
MECHANICAL PROPERTIES
MECHANICS
PHYSICAL PROPERTIES
360103* - Metals & Alloys- Mechanical Properties
420500 - Engineering- Materials Testing