A study of the deformation and fracture of a dual-phase steel

Journal Article · Sat Oct 01 04:00:00 EDT 1983 · Metall. Trans., A; (United States)

OSTI ID:5563831

Szewczyk, A F; Gurland, J

A metallographic study of the tensile deformation and fracture of a commercial dual-phase steel shows that extensive plastic deformation of the martensite occurs mainly in the neck of the tensile specimen. The average load-transfer stress in martensite was roughly calculated from a shear-lag model, and it was found that it exceeds the estimated martensite yield stress value at strains corresponding to the ultimate uniform elongation, and beyond. Ductile fracture begins with void formation at martensite ferrite interfaces, most frequently at the poles of closely spaced martensite particles situated o ferrite grain boundaries. Large inclusions and martensite banding also affect the fracture process.

• Research Organization: IBM East Fishkill Facility, Hopewell Junction, NY 12533
• DOE Contract Number: AC02-80ER10556
• OSTI ID: 5563831
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 13A; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CARBON ADDITIONS
CRYSTAL STRUCTURE
DEFORMATION
DUCTILITY
ELONGATION
FERRITE
FRACTURE MECHANICS
GRAIN BOUNDARIES
INCLUSIONS
IRON ALLOYS
IRON BASE ALLOYS
MARTENSITE
MECHANICAL PROPERTIES
MECHANICS
MICROSTRUCTURE
SHEAR
STEELS
STRAINS
STRESSES
TENSILE PROPERTIES