Resistance to brittle fracture of high-strength steel

1972 ◽  
Vol 4 (4) ◽  
pp. 459-463
Author(s):  
M. A. Balter ◽  
V. Ya. Gol'dshtein ◽  
V. I. Stennik ◽  
V. P. Kislitsyn
Keyword(s):  
Brittle Fracture ◽  
High Strength Steel ◽  
High Strength ◽  
Resistance To Brittle Fracture

Effect of Welding Residual Stress and Plastic Constraint on Brittle Fracture of a High Strength Steel

2009 ◽  
Author(s):  
Masaki Torigoe ◽  
Yoichi Yamashita ◽  
Takehisa Yamada
Keyword(s):  
Residual Stress ◽  
Brittle Fracture ◽  
High Strength Steel ◽  
Crack Tip ◽  
High Strength ◽  
Fracture Initiation ◽  
Parent Material ◽  
Welding Residual Stress ◽  
Cross Sectional ◽  
Plastic Constraint

This paper investigates the effect of welding residual stress and plastic constraint on brittle fracture of a 780 MPa class high-strength steel (HT780). In order to investigate the effect of welding residual stress, three point bend (3PB) fracture toughness tests were conducted using the parent-material specimens and groove-welded specimens which were prepared to have the same cross-sectional proportion; i.e., a ratio of thickness to width of 0.5. Crack length was determined so that the crack tip was located in the base-metal zone far from the heat-affected zone of the welded specimen to eliminate the effect of any degradation of the parent-material property on fracture resistance. Also, in order to investigate the effect of constraint, tensile loading tests in which the plastic constraint was expected to be less than 3PB were conducted using welded specimens as the same as employed in the 3PB test. Three dimensional finite element (FE) analyses were performed to evaluate the stress state near the crack tip at the point of brittle fracture initiation for each test condition. From the results of experiments and FE analyses, it is confirmed that the fracture test results can be evaluated using J or KJ – Q theory, by considering enhancement or reduction due to residual stress.

scholarly journals Effect of Undermatched Joint on Brittle Fracture Behavior of High Strength Steel Plate

2010 ◽  
Vol 28 (3) ◽  
pp. 296-304
Author(s):  
Tomoya KAWABATA ◽  
Hideo SAKAIBORI ◽  
Kazushi ONISHI ◽  
Masahito MOCHIZUKI ◽  
Shigetaka OKANO ◽  
...  
Keyword(s):  
Brittle Fracture ◽  
High Strength Steel ◽  
Fracture Behavior ◽  
Steel Plate ◽  
High Strength

DOFASCOLOY-P

Alloy Digest ◽  
1967 ◽  
Vol 16 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Brittle Fracture ◽  
Physical Properties ◽  
Atmospheric Corrosion ◽  
High Strength ◽  
Heat Treating ◽  
Bend Strength ◽  
Low Alloy Steel ◽  
Good Resistance ◽  
Resistance To Brittle Fracture

Abstract DOFASCOLOY-P is a high-strength low-alloy steel characterized by excellent weldability, good atmospheric corrosion resistance and good resistance to brittle fracture. It is recommended for structures, bridges, earth moving equipment, etc. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive, shear, and bend strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-218. Producer or source: Dominion Foundries & Steel Ltd.

Sign in / Sign up

Export Citation Format

Share Document