Characteristics of fracture behaviour of Duplex steels in transition region

被引：0
|
作者：
Dlouhy, I
Prochazkova, A
Kozak, V
Holzmann, M
机构：
来源：
ECF 11 - MECHANISMS AND MECHANICS OF DAMAGE AND FAILURE, VOLS I-III | 1996年
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中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Fracture behaviour of duplex stainless steel was analyzed arising from temperature dependencies of strength properties, fracture toughness, impact energy and, in particular, from characteristics of load - deflection traces obtained using instrumented impact tester. At uniaxial tensile loading, the ferrite transition behaviour is significantly compensated by austenite plasticity. Fracture of Charpy V-notch specimens and precracked compact tension specimens, respectively, in transition and lower shelf regions is controlled by fracture behaviour of ferritic constituent of the microstructure. Critical (effective) fracture stress at the onset of unstable fracture for Charpy type specimen was estimated. The values determined are well comparable with results of FEM calculation.
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页码：651 / 656
页数：6
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