Tensile and shear fracture of an HSLA steel

Conference · · TMS (The Metallurgical Society) Paper Selection; (USA)

OSTI ID:5442209

Schroth, J G; Hoagland, R G; Hirth, J P; Rosenfield, A R ^[1]

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1. Ohio State Univ., Columbus (USA)

A single specimen J-integral measurement technique has been used to determine the mixed Mode I - Mode III fracture resistance of a Cu-bearing HSLA steel. By varying the initial crack orientation in a modified compact specimen, several shear-/opening-mode ratios were obtained for two heat treated conditions (peak aged and overaged). Crack initiation toughness values define a fracture envelope in J{sub I}-J{sub III} space. The shape of this fracture envelope may be predicted qualitatively by a theoretical model in which a crack interacts with two super dislocations. The fracture toughness results are related to fractographic observations.

• OSTI ID: 5442209
• Report Number(s): CONF-840909--
• Conference Information: Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Journal Volume: 56
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
AGING
ALLOYS
COPPER ALLOYS
CRACKS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
FAILURES
FRACTOGRAPHY
FRACTURE PROPERTIES
FRACTURES
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
LINE DEFECTS
MEASURING METHODS
MECHANICAL PROPERTIES
ORIENTATION
SHEAR PROPERTIES
STEELS
TENSILE PROPERTIES