Load and deformation effects on brittle fracture of ferritic steel 20МnМoНi 55 in temperature transition region
Апстракт
It is known that the load level, the way deformation is applied and the level of plastic strain, all can 'aid' or 'hinder' the occurrence of brittle fracture, but the question is - to what extent? These influential factors are analysed by testing of C(T)50 specimens made of ferritic steel 20MnMoNi 55 at two temperatures within the transition temperature range. The effect of displacement rates is analysed by testing C(T) specimens at -60 degrees C, while the effect of plastic strain is analysed by introducing an initial fatigue crack with low and high stress intensity factor threshold values of Delta K, by testing the C(T) specimens at -90 degrees C, in accordance with ASTM 1820 standard. The analysis of these influences involves interpretation of test results for parameters J(c), CMOD, and r(c). Conclusions based on this analysis can be used in further studies which involve understanding of ductile to brittle transition region, as well as the general fracture behaviour of ferritic stee...ls.
Кључне речи:
transition region / displacement rate / brittle fracture / 20MnMoNi 55 ferritic steelИзвор:
Structural Integrity and Life, 2020, 20, 2, 184-189Издавач:
- Institut za ispitivanje materijala, Beograd
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200135 (Универзитет у Београду, Технолошко-металуршки факултет) (RS-MESTD-inst-2020-200135)
Институција/група
Inovacioni centarTY - JOUR AU - Đorđević, Branislav R. AU - Sedmak, Aleksandar AU - Petrovski, Blagoj AU - Sedmak, Simon AU - Radaković, Zoran PY - 2020 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3440 AB - It is known that the load level, the way deformation is applied and the level of plastic strain, all can 'aid' or 'hinder' the occurrence of brittle fracture, but the question is - to what extent? These influential factors are analysed by testing of C(T)50 specimens made of ferritic steel 20MnMoNi 55 at two temperatures within the transition temperature range. The effect of displacement rates is analysed by testing C(T) specimens at -60 degrees C, while the effect of plastic strain is analysed by introducing an initial fatigue crack with low and high stress intensity factor threshold values of Delta K, by testing the C(T) specimens at -90 degrees C, in accordance with ASTM 1820 standard. The analysis of these influences involves interpretation of test results for parameters J(c), CMOD, and r(c). Conclusions based on this analysis can be used in further studies which involve understanding of ductile to brittle transition region, as well as the general fracture behaviour of ferritic steels. PB - Institut za ispitivanje materijala, Beograd T2 - Structural Integrity and Life T1 - Load and deformation effects on brittle fracture of ferritic steel 20МnМoНi 55 in temperature transition region EP - 189 IS - 2 SP - 184 VL - 20 UR - https://hdl.handle.net/21.15107/rcub_machinery_3440 ER -
@article{ author = "Đorđević, Branislav R. and Sedmak, Aleksandar and Petrovski, Blagoj and Sedmak, Simon and Radaković, Zoran", year = "2020", abstract = "It is known that the load level, the way deformation is applied and the level of plastic strain, all can 'aid' or 'hinder' the occurrence of brittle fracture, but the question is - to what extent? These influential factors are analysed by testing of C(T)50 specimens made of ferritic steel 20MnMoNi 55 at two temperatures within the transition temperature range. The effect of displacement rates is analysed by testing C(T) specimens at -60 degrees C, while the effect of plastic strain is analysed by introducing an initial fatigue crack with low and high stress intensity factor threshold values of Delta K, by testing the C(T) specimens at -90 degrees C, in accordance with ASTM 1820 standard. The analysis of these influences involves interpretation of test results for parameters J(c), CMOD, and r(c). Conclusions based on this analysis can be used in further studies which involve understanding of ductile to brittle transition region, as well as the general fracture behaviour of ferritic steels.", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Structural Integrity and Life", title = "Load and deformation effects on brittle fracture of ferritic steel 20МnМoНi 55 in temperature transition region", pages = "189-184", number = "2", volume = "20", url = "https://hdl.handle.net/21.15107/rcub_machinery_3440" }
Đorđević, B. R., Sedmak, A., Petrovski, B., Sedmak, S.,& Radaković, Z.. (2020). Load and deformation effects on brittle fracture of ferritic steel 20МnМoНi 55 in temperature transition region. in Structural Integrity and Life Institut za ispitivanje materijala, Beograd., 20(2), 184-189. https://hdl.handle.net/21.15107/rcub_machinery_3440
Đorđević BR, Sedmak A, Petrovski B, Sedmak S, Radaković Z. Load and deformation effects on brittle fracture of ferritic steel 20МnМoНi 55 in temperature transition region. in Structural Integrity and Life. 2020;20(2):184-189. https://hdl.handle.net/21.15107/rcub_machinery_3440 .
Đorđević, Branislav R., Sedmak, Aleksandar, Petrovski, Blagoj, Sedmak, Simon, Radaković, Zoran, "Load and deformation effects on brittle fracture of ferritic steel 20МnМoНi 55 in temperature transition region" in Structural Integrity and Life, 20, no. 2 (2020):184-189, https://hdl.handle.net/21.15107/rcub_machinery_3440 .