Results 161 to 170 of about 79,931 (211)
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Impact toughness of austenitic steels at low temperatures
Metal Science and Heat Treatment, 19671. If austenite undergoes no change in the impact test than the impact toughness decreases monotonically with decreasing temperatures. 2. The martensite forming during the test increases the work of formation of the crack but reduces the work of its propagation. The curves of the impact toughness have peaks.
A. P. Gulyaev, A. M. Minaev
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SSRN Electronic Journal, 2021
Ultrafine ferrite with a grain size range of 0.5-2 μm was introduced into low-temperature bainitic medium-carbon high-silicon steel through partially austenitization of cold-rolled tempered troostite followed by austempering at temperatures of 10 °C above martensite starting temperature.
TIng Zhao +4 more
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Ultrafine ferrite with a grain size range of 0.5-2 μm was introduced into low-temperature bainitic medium-carbon high-silicon steel through partially austenitization of cold-rolled tempered troostite followed by austempering at temperatures of 10 °C above martensite starting temperature.
TIng Zhao +4 more
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Enhanced Low-Temperature Impact Toughness of Ultra-Fine Grained SiCp/ZL108 Composites
Materials Science Forum, 2012A new strategy for increasing the low-temperature toughness of structural materials is in urgent need for overcoming the general rheotropic brittleness in coarse-grain state. Here, a unique phenomenon was observed that ultra-fine-grained (UFG) SiCp/ZL108 composites after severe plastic deformation (SPD) exhibit higher impact toughness at temperatures ...
Jing Hua Jiang +7 more
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Effect of Low Temperatures on Charpy Impact Toughness of Austempered Ductile Irons
Journal of Materials Engineering and Performance, 2002Impact properties of standard American Society for Testing Materials (ASTM) grades of austempered ductile iron (ADI) were evaluated at subzero temperatures in unnotched and V-notched conditions and compared with ferritic and pearlitic grades of ductile irons (DIs).
Mikhail V. Riabov +2 more
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Effect of residual aluminum on impact toughness of steel at low temperatures
Metal Science and Heat Treatment of Metals, 19591. The transitional embrittlement of low carbon steel depends on the contents of aluminum and the ferritic grain size. 2. The higher the rate of cooling of steel from the austenite range, the finer the grain and the lower the tough-to-brittle transition temperature.
E. I. Rabinovich +2 more
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The impact toughness and mechanism of low-carbon steel fracture at low temperatures
Industrial laboratory. Diagnostics of materials, 2019The goal of the work is to study the effect of severe plastic deformation (SPD) on the impact toughness and fracture mechanism of St3sp low-carbon structural steel within a test temperature range of 293 – 213 K. The issues of deformation processing of steel St3sp billets using SPD method in conditions of the equal-channel angular pressing scheme (ECAP)
A. M. Ivanov, N. D. Kovalenko
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Microstructures and impact toughness of low-alloy high-carbon steel austempered at low temperature
Scripta Materialia, 2009We studied the microstructure and impact toughness of low-alloy high-carbon steel austempered at low temperature. Ultrafine carbide-free bainitic microstructure was obtained, which is composed of lath-like bainitic ferrite and retained austenite. The impact absorbed energy of austempered samples is much greater than that of the low-temperature tempered
T.S. Wang +5 more
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Materials Science and Engineering: A, 2022
Abstract The influence of martensite morphology and volume fraction on low-temperature impact toughness of dual-phase (DP) steels was investigated by impact tests, nanoindentation tests, atom probe tomography (APT) and microstructural examination.
Jing Wang +3 more
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Abstract The influence of martensite morphology and volume fraction on low-temperature impact toughness of dual-phase (DP) steels was investigated by impact tests, nanoindentation tests, atom probe tomography (APT) and microstructural examination.
Jing Wang +3 more
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Journal of Iron and Steel Research International, 2015
Abstract The impact toughness of EN-GJS-400-18-LT ductile iron was measured by Charpy V-notch impact test at temperature between −80 and 20°C. The fracture properties were tested under instrumented impact loading. Total impact fracture energy, crack initiation and propagation energy, dynamic loads and the ductile to brittle temperature were measured.
Xin-ning Zhang, Ying-dong Qu, Rong-de Li
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Abstract The impact toughness of EN-GJS-400-18-LT ductile iron was measured by Charpy V-notch impact test at temperature between −80 and 20°C. The fracture properties were tested under instrumented impact loading. Total impact fracture energy, crack initiation and propagation energy, dynamic loads and the ductile to brittle temperature were measured.
Xin-ning Zhang, Ying-dong Qu, Rong-de Li
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Metallurgical Research & Technology, 2023
The effect of Mo content on impact toughness of the coarse-grained heat-affected zone (CGHAZ) in 420 MPa offshore engineering steels after 15 kJ/cm welding simulations is studied at low temperatures of −40, −60 and −80 °C. With increasing Mo content from 0.08 to 0.16 wt.%, the average size of the prior austenite grain in the CGHAZ is decreased from 150
Hailong Du +3 more
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The effect of Mo content on impact toughness of the coarse-grained heat-affected zone (CGHAZ) in 420 MPa offshore engineering steels after 15 kJ/cm welding simulations is studied at low temperatures of −40, −60 and −80 °C. With increasing Mo content from 0.08 to 0.16 wt.%, the average size of the prior austenite grain in the CGHAZ is decreased from 150
Hailong Du +3 more
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