Results 71 to 80 of about 171 (94)
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Materials Science & Engineering: A, 2019
Given the transformation stasis after the incomplete transformation of carbide-free bainite, this paper aimed to study the effects of austempering time within transformation stasis on the bainite microstructure, monotonic deformation behavior, and ...
J. Zhao +7 more
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Given the transformation stasis after the incomplete transformation of carbide-free bainite, this paper aimed to study the effects of austempering time within transformation stasis on the bainite microstructure, monotonic deformation behavior, and ...
J. Zhao +7 more
semanticscholar +1 more source
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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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 & Engineering: A, 2019
High tensile strength of ~ 1550 MPa, uniform elongation of ~ 30%, and impact energy of ~ 80 J were achieved in a high-C high-Si bainitic steel, by austempering around the nose-tip temperature of the time–temperature–transformation (TTT) diagram.
Jiali Zhao +6 more
semanticscholar +1 more source
High tensile strength of ~ 1550 MPa, uniform elongation of ~ 30%, and impact energy of ~ 80 J were achieved in a high-C high-Si bainitic steel, by austempering around the nose-tip temperature of the time–temperature–transformation (TTT) diagram.
Jiali Zhao +6 more
semanticscholar +1 more source
On the control of the scale of nanobainitic microstructures by prior austenite strengthening
2020The bainitic ferrite plate thickness is the most relevant parameter when aiming to obtain a high final strength on the microstructure. Such parameter has been shown to be primarily dependent on the driving force for the transformation and on the yield strength of the austenite prior to the transformation.
Eres-Castellanos, Adriana +6 more
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Wear, 2019
In the current study, a high-carbon, high-silicon steel (1.21 wt% C, 2.56 wt% Mn, 1.59 wt% Si) was subjected to different heat treatments ((a) quenching from 800–1000 °C; (b) quenching from 800–1000 °C with further bainitizing at 250 °C for 8 days ...
V. Efremenko +7 more
semanticscholar +1 more source
In the current study, a high-carbon, high-silicon steel (1.21 wt% C, 2.56 wt% Mn, 1.59 wt% Si) was subjected to different heat treatments ((a) quenching from 800–1000 °C; (b) quenching from 800–1000 °C with further bainitizing at 250 °C for 8 days ...
V. Efremenko +7 more
semanticscholar +1 more source
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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Correlation of Fatigue Limit and Crack Growth Threshold Value to the Nanobainitic Microstructure
Solid State Phenomena, 2016The recently developed nanobainitic steels show high ultimate tensile strength (UTS) as well as high ductility. Although this combination seems to be desirable for fatigue design, fatigue limit of nanostructured bainite is often disappointingly low.
Inga Müller +4 more
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