Results 61 to 70 of about 126 (83)
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Effect of Austempering Route on Microstructural Characterization of Nanobainitic Steel
Acta Metallurgica Sinica (English Letters), 2014A low-temperature nanobainitic steel was obtained through one-step and two-step austempering. The effect of austempering temperature, time, and route on bainitic lath width, volume fraction of retained austenite, carbon concentration in retained austenite, and nanohardness of bainitic lath and retained austenite was studied.
Huifang Lan +3 more
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Electron beam hardening of nanobainitic steel
Surface EngineeringNanobainitic steels with high Si content are very promising materials due to the very favourable combination of mechanical and functional properties. However, sometimes in order to achieve the required results, it is necessary to further increase the surface's layer hardness.
Piotr Śliwiński +3 more
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Solid State Phenomena, 2011
A 0.79C-1.5Si-1.98Mn-0.98Cr-0.24Mo-1.06Al-1.58Co (wt%) steel was isothermally heat treated at 350°C bainitic transformation temperature for 1 day to form fully bainitic structure with nano-layers of bainitic ferrite and retained austenite, while a 0.26C-1.96Si-2Mn-0.31Mo (wt%) steel was subjected to a successive isothermal heat treatment at 700°C for ...
Ilana Timokhina +4 more
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A 0.79C-1.5Si-1.98Mn-0.98Cr-0.24Mo-1.06Al-1.58Co (wt%) steel was isothermally heat treated at 350°C bainitic transformation temperature for 1 day to form fully bainitic structure with nano-layers of bainitic ferrite and retained austenite, while a 0.26C-1.96Si-2Mn-0.31Mo (wt%) steel was subjected to a successive isothermal heat treatment at 700°C for ...
Ilana Timokhina +4 more
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Nanobainite formation in high-Al medium-Mn steels: thermodynamic approach
Journal of Thermal Analysis and CalorimetryAbstractThe objective of this study was to analyze the thermodynamic feasibility of forming nanobainite in Al-alloyed medium-Mn steels through intercritical annealing (IA) and subsequent heat treatments. The research aimed to determine the influence of IA temperature and Mn content on the stability of austenite, the Ms temperature, and the resulting ...
Jarosław Opara +2 more
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Characterization of Isothermally Heat-Treated High Carbon Nanobainitic Steels
Journal of Materials Engineering and Performance, 2013Isothermal heat treatment close to the martensite-start temperature at various transformation times, followed by hardness and compression tests, has been performed for three new high carbon experimental nanobainitic steels. Microstructural characterization clearly revealed the formation of lower bainitic structures with plate thickness in the range of ...
G. Sidhu +3 more
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Materials Science and Engineering: A, 2021
Abstract The transformation of a metastable phase plays an important role in guaranteeing the excellent property of a material. However, this transformation introduces a new phase that contributes to the mechanical behavior, thereby making the calculation of the contribution of each phase to the material's stress and strain more complex.
Z.N. Yang +7 more
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Abstract The transformation of a metastable phase plays an important role in guaranteeing the excellent property of a material. However, this transformation introduces a new phase that contributes to the mechanical behavior, thereby making the calculation of the contribution of each phase to the material's stress and strain more complex.
Z.N. Yang +7 more
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Improved rolling contact fatigue life for an ultrahigh-carbon steel with nanobainitic microstructure
Scripta Materialia, 2014In the present work, the influence of nanobainite on the rolling contact fatigue (RCF) performance of an ultrahigh-carbon steel has been studied. The results show that nanobainite can effectively improve the RCF life of the steel. In particular, the L10 life of specimens with 21 ± 1 vol.% nanobainite is approximately 3.3 times longer than that of ...
Yongning Liu, Hongji Liu
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The formation mechanism and microstructural characteristics of novel nanobainitic steel
Металловедение и термическая обработка металловИсследовано влияние предварительного высокотемпературного отжига при температурах выше Accm на эволюцию микроструктуры при бейнитном превращении в процессе аустемперинга в стали, содержащей, % (масс.): 0,95C; 1,37Si; 1,04Cr; 0,44Mn. Использованы методы дифференциального термического анализа, рентгеноструктурного анализа и просвечивающей электронной ...
Xin Zhang +3 more
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Properties of Steel with Nanobainitic Structure
Metal Science and Heat Treatment, 2022A. I. Popelyukh +2 more
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Effect of isothermal temperature and load on wear of nanobainitic cast steel
Materials Science and TechnologyThe wear behaviour of a nanobainitic cast steel: 0.76C-2.08Si-0.74Mn-0.79Cr (wt. %), isothermally treated at different temperatures, 250 and 300°C; have been investigated by pin on disk test in dry conditions. The tests were carried out at different loads: 2, 7, 12 and 15 N.
Mateo Montoya-Mejía +2 more
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