Published December 2016 | Version v1
Journal article Metadata-only

Effect of boron addition on fatigue crack growth characteristics of austenitic stainless steel

Creators

  • 1. Aoyama Gakuin Univ., Graduate School of Science and Engineering, Sagamihara, Kanagawa (Japan)
  • 2. Aoyama Gakuin Univ., College of Science and Engineering, Sagamihara, Kanagawa (Japan)

Description

Borated austenitic stainless steel, B-SUS304P-1, has been used for storage and transportation cask in the nuclear industry, because it has enough structural strength, heat dissipation function and neutron absorption ability. In the present study, fatigue crack growth (FCG) tests were conducted under stress ratio, R, and maximum stress intensity factor, Kmax, constant conditions and the FCG rates of B-SUS304P-1 were compared with those of SUS316. In order to clarify the upper bound characteristics of FCG, fracture toughness tests were performed for both materials according to the ASTM standard E1820 and revealed the crack growth characteristics under static loading condition. Detailed observations of fracture surfaces indicated that the boride consisted of iron, chromium and boron and produced locally flat fracture surface, which suggested brittle fracture. However, the FCG rates were insensitive to the boride presence, while the fracture toughness was reduced. Based on the results, the effect of boron addition on the FCG characteristics were discussed over the wide range of FCG rate. (author)

Additional details

Publishing Information

Journal Title
Zairyo
Journal Volume
65
Journal Issue
12
Journal Page Range
p. 856-861
ISSN
0514-5163

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
48066452
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
AUSTENITIC STEELS; BORIDES; BORON; COOLING; CRACKS; FRACTURE PROPERTIES; FRACTURES; HEAT TRANSFER; NEUTRON ABSORBERS; SCANNING ELECTRON MICROSCOPY; SPENT FUEL CASKS; SPENT FUELS; STRESS INTENSITY FACTORS; TENSILE PROPERTIES
Descriptors DEC
ALLOYS; BORON COMPOUNDS; CARBON ADDITIONS; CASKS; CONTAINERS; ELECTRON MICROSCOPY; ELEMENTS; ENERGY SOURCES; ENERGY TRANSFER; FAILURES; FUELS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; MECHANICAL PROPERTIES; MICROSCOPY; NUCLEAR FUELS; REACTOR MATERIALS; SEMIMETALS; STEELS; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
11 refs., 12 figs., 2 tabs.