A thermodynamic model for fracture toughness prediction
作者： A.A. Baron
DOI: 10.1016/0013-7944(93)90285-Z
关键词: Pressure vessel 、 Fracture toughness 、 Composite material 、 Stress intensity factor 、 Materials science 、 Brinell scale 、 Graphite 、 Forensic engineering 、 Stress (mechanics) 、 Izod impact strength test 、 Charpy impact test
摘要: Abstract Physical dependencies which connect crack resistance, K1c, with the effective and inner components of yield stress, deforming stress Brinell hardness HB iron-carbon body-centred cubic (bcc) alloys such as pressure vessel pipe steels, spheroidal graphite cast irons, are discussed. The existence a linear relationship between K1c parameter k1c/HB is demonstrated. An analogous correlation for impact strength KCV (Charpy test)-KCV/HB in low transitional temperature zones found. A practical procedure prediction resistance within wide (T) range using HB-T dependence values or at T = 77 K developed. Its possible variants also described
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