Ductile-to-brittle transition temperature as a measure of the crack resistance of steels

Krasovskii, A. Ya.

doi:10.1007/bf01534035

Cited by 4 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is well known that during the low temperature climate operation the catastrophic breakdown of structure and machine elements often occurred. In that case the plasticity properties fall and the character of fracture changes from ductile to brittle [1,2]. The significant loss of safety and economic efficiency occurred in the operation of railway equipment in extremely low climatic temperatures conditions [3,4].…”

Section: Introductionmentioning

confidence: 99%

Some Aspects of Structural Modeling of Damage Accumulation and Fracture Processes in Metal Structures at Low Temperature

Lepov

Grigoriev

Achikasova

et al. 2016

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

The problem of brittle fracture of structures at low temperature conditions connected to damage accumulation and ductile-brittle transition in metals. The data for locomotive tire contact impact fatigue and spalling are presented. The results of experimental testing showed the impact toughness drop at low temperature. The internal friction method was applied to revealing of the mechanism of dislocation microstructure changes during the low temperature ductile-brittle transition. It has been shown for the first time that the transition is not connected to interatomic interactions but stipulated by thermofluctuation on nucleus such as microcracks and by their further growth and coalescence. From now on, the proposed mechanism would be used for theoretical and numerical modeling of damage accumulation and fracture in materials.

show abstract

Section: Introductionmentioning

confidence: 99%