Influence of the cutting direction of Charpy specimens from steel 10GN2MFA on the components of the fracture energy and the ductile-to-brittle transition temperature
Journal Title: Вісник Тернопільського національного технічного університету - Year 2017, Vol 88, Issue 4
Abstract
The Charpy specimens impact tests are one of more simple and inexpensive methods to determine the mechanical properties of materials. The results of these tests can be used to estimate the strength and durability of large-scale structures. A series of the Charpy specimens impact test from high-alloyed high-temperature resistant steel10GN2MFA were carried out in the temperature range of –130 ÷ +70ºС with control of cutting direction. The tests were conducted on instrumented vertical impact machine, which can record a full diagram of specimen’s deformation and fracture. The values of total energy of deformation and fracture and its components: energy of crack initiation, energy of ductile crack growth, brittle cracks energy and ductile rupture energy were determined. It was found, that ductile-brittle transition temperature for specimens cut in longitudinal direction (group GK) is higher than for specimens cut in transversal direction (group GO). It is shown, that the cutting direction of Charpy specimens significantly influences the values of total energy of deformation and fracture and its components, and the values of the ductile-brittle transition temperature for 10GN2MFA steel.
Authors and Affiliations
Andriy Kravchuk, Ievgen Kondryakov, Oleksandr Panasenko, Valeriy Kharchenko
Keywords
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- EP ID EP280338
- DOI 10.33108/visnyk_tntu2017.04.026
- Views 56
- Downloads 0
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