The thermodynamics of brittle fracture initiation under triaxial stress conditions

1972 ◽  
Vol 8 (2) ◽  
pp. 167-173 ◽  
Author(s):  
S. A. F. Murrell ◽  
P. J. Digby
Keyword(s):  
Brittle Fracture ◽  
Fracture Initiation ◽  
Stress Conditions ◽  
Triaxial Stress

Researches on Brittle Fracture Initiation of Welded Steel Structure in Japan (Part 1)

1973 ◽  
Vol 42 (2) ◽  
pp. 157-178 ◽  
Author(s):  
Hiroshi Kihara ◽  
Kunihiko Satoh ◽  
Masao Toyoda
Keyword(s):  
Brittle Fracture ◽  
Steel Structure ◽  
Fracture Initiation ◽  
Welded Steel

scholarly journals On the Characteristics of Brittle Fracture Initiation in a Structurally Stress Concentrated Region (2nd Report)

1980 ◽  
Vol 1980 (148) ◽  
pp. 169-176 ◽  
Author(s):  
Kin-ichi Nagai ◽  
Hiroshi Yajima ◽  
Katsuya Kajimoto ◽  
Takahiro Hino ◽  
Nagio Minami
Keyword(s):  
Brittle Fracture ◽  
Fracture Initiation

Investigation of the Microstructure Factors Affecting the Brittle Fracture Initiation of Pre-Cracked Charpy-Type Samples of VVER-1000 RPV Steel

2013 ◽  
Vol 592-593 ◽  
pp. 635-638
Author(s):  
Evgenia A. Kuleshova ◽  
Maxim A. Artamonov ◽  
Artem D. Erak
Keyword(s):  
Brittle Fracture ◽  
Base Metal ◽  
Fracture Initiation ◽  
Type Specimens ◽  
Fracture Origin ◽  
Factors Affecting ◽  
Three Point Bending ◽  
Weld Metals ◽  
Rpv Steel ◽  
Higher Temperature

The correlation between fracture toughness parameter KJc and cleavage initiation distance (CID) for the three point bending (3PB) pre-crecked Charpy type specimens of VVER-1000 reactor pressure vessel base and weld metals was observed. Two types of brittle fracture origin sites were found: nonmetallic inclusions and grain or subgrain boundaries. It was shown that KJc values are shifted to the higher temperature area for weld metal with respect to base metal data. In case when the initiation origin is grain or subgrain boundary, the KJc values are higher for base metal at the same CID values. This indicates the higher crack resistance of base metal.

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