Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range
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Tensile properties and fracture mechanism of a polycrystalline IN-100 superalloy have been investigated in the range from room temperature to 900 degrees C. Optical microscopy (OM) and transmission electron microscopy (TEM) applying replica technique were used for microstructural investigation, whereas scanning electron microscopy (SEM) was utilized for fracture study. High temperature tensile tests were carried out in vacuumed chamber. Results show that strength increases up to 700 degrees C, and then sharply decreases with further increase in temperature. Elongation increases very slowly (6-7.5%) till 500 degrees C, then decreases to 4.5% at 900 degrees C. Change in elongation may be ascribed to a change of fracture mechanism. Appearance of a great number of microvoids prevails up to 500 degrees C resulting in a slow increase of elongation, whereas above this temperature elongation decrease is correlated with intergranular crystallographic fracture and fracture of carbides.
Keywords:
Tensile strength / elongation / microstructure / microvoids / intergranular crystallographic fractureSource:
Metallurgical and Materials Engineering, 2017, 23, 2, 99-107Funding / projects:
- Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- Micromechanical criteria of damage and fracture (RS-MESTD-Basic Research (BR or ON)-174004)
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VinčaTY - JOUR AU - Jovanović, Milan T. AU - Drobnjak, Đorđe AU - Cvijović-Alagić, Ivana AU - Maksimović, Vesna PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1711 AB - Tensile properties and fracture mechanism of a polycrystalline IN-100 superalloy have been investigated in the range from room temperature to 900 degrees C. Optical microscopy (OM) and transmission electron microscopy (TEM) applying replica technique were used for microstructural investigation, whereas scanning electron microscopy (SEM) was utilized for fracture study. High temperature tensile tests were carried out in vacuumed chamber. Results show that strength increases up to 700 degrees C, and then sharply decreases with further increase in temperature. Elongation increases very slowly (6-7.5%) till 500 degrees C, then decreases to 4.5% at 900 degrees C. Change in elongation may be ascribed to a change of fracture mechanism. Appearance of a great number of microvoids prevails up to 500 degrees C resulting in a slow increase of elongation, whereas above this temperature elongation decrease is correlated with intergranular crystallographic fracture and fracture of carbides. T2 - Metallurgical and Materials Engineering T1 - Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range VL - 23 IS - 2 SP - 99 EP - 107 UR - https://hdl.handle.net/21.15107/rcub_vinar_1711 ER -
@article{ author = "Jovanović, Milan T. and Drobnjak, Đorđe and Cvijović-Alagić, Ivana and Maksimović, Vesna", year = "2017", abstract = "Tensile properties and fracture mechanism of a polycrystalline IN-100 superalloy have been investigated in the range from room temperature to 900 degrees C. Optical microscopy (OM) and transmission electron microscopy (TEM) applying replica technique were used for microstructural investigation, whereas scanning electron microscopy (SEM) was utilized for fracture study. High temperature tensile tests were carried out in vacuumed chamber. Results show that strength increases up to 700 degrees C, and then sharply decreases with further increase in temperature. Elongation increases very slowly (6-7.5%) till 500 degrees C, then decreases to 4.5% at 900 degrees C. Change in elongation may be ascribed to a change of fracture mechanism. Appearance of a great number of microvoids prevails up to 500 degrees C resulting in a slow increase of elongation, whereas above this temperature elongation decrease is correlated with intergranular crystallographic fracture and fracture of carbides.", journal = "Metallurgical and Materials Engineering", title = "Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range", volume = "23", number = "2", pages = "99-107", url = "https://hdl.handle.net/21.15107/rcub_vinar_1711" }
Jovanović, M. T., Drobnjak, Đ., Cvijović-Alagić, I.,& Maksimović, V.. (2017). Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range. in Metallurgical and Materials Engineering, 23(2), 99-107. https://hdl.handle.net/21.15107/rcub_vinar_1711
Jovanović MT, Drobnjak Đ, Cvijović-Alagić I, Maksimović V. Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range. in Metallurgical and Materials Engineering. 2017;23(2):99-107. https://hdl.handle.net/21.15107/rcub_vinar_1711 .
Jovanović, Milan T., Drobnjak, Đorđe, Cvijović-Alagić, Ivana, Maksimović, Vesna, "Tensile Properties and Fracture Mechanism of In-100 Superalloy in High Temperature Range" in Metallurgical and Materials Engineering, 23, no. 2 (2017):99-107, https://hdl.handle.net/21.15107/rcub_vinar_1711 .