Results 41 to 50 of about 82 (66)

Phase quantification in nanobainite via magnetic measurements and X-ray diffraction

Journal of Magnetism and Magnetic Materials, 2015
Abstract Accurate phase quantification of nanostructured bainitic steel is of importance because of the nature of its percolating structure that controls many of its mechanical properties. X-ray diffraction is the technique of choice for such analysis, but magnetic methods can be more rapid and less sensitive to defect structures.
W Solano-Alvarez, M R da Silva, Mathew J Peet   +2 more
exaly   +2 more sources

Crystallographic analysis of nanobainitic steels

Scripta Materialia, 2009
Electron back-scattered diffraction in conjunction with transmission electron microscopy was employed to investigate the crystallographic nature of bainitic laths formed at relatively low transformation temperatures where a nanostructured bainite forms.
H BELADI, Y ADACHI, I TIMOKHINA, P HODGSON   +3 more
openaire   +1 more source

Nanoscale microstructural characterization of a nanobainitic steel

Acta Materialia, 2011
Abstract A 0.79 C–1.5 Si–1.98 Mn–0.98 Cr–0.24 Mo–1.06 Al–1.58 Co (wt.%) steel was isothermally heat treated at 200 °C for 10 days and 350 °C for 1 day to form a nanoscale bainitic microstructure consisting of nanobainitic ferrite laths with high dislocation density and retained austenite films. The microstructures of the samples were characterized by
I.B. Timokhina, H. Beladi, X.Y. Xiong, Y. Adachi, P.D. Hodgson   +4 more
openaire   +1 more source

Microstructures and properties of a novel carburizing nanobainitic bearing steel

Materials Science and Engineering: A, 2020
Abstract Nanobainite and dispersed carbides were gained on the surface layer of a modified carburizing 23Cr2Ni2Si1Mo bainitic bearing steel based on carburization, tempering at high temperature, and succedent low-temperature isothermal quenching. As compared with the conventional carburizing 20Cr2Ni4 martensitic bearing steel, the novel carburizing ...
Yanhui Wang, Zhinan Yang, Fucheng Zhang, Yuman Qin, Xubiao Wang, Bo Lv   +5 more
openaire   +1 more source

A Preliminary Study on Machinability Assessment of Nanobainite Steel

Volume 2B: Advanced Manufacturing, 2013
The demand for high strength materials and improvements in heat treatment techniques has given rise to this new form of high strength steel known as nanobainite steel. The production of nanobainite steel involves slow isothermal holding of austenitic steel around 200°C for 10 days, in order to obtain a carbon enriched austenite and cooling to room ...
Ashwin Polishetty, Guy Littlefair, Thomas Musselwhite, Chinmay Sonavane   +3 more
openaire   +1 more source

Effect of Austempering Route on Microstructural Characterization of Nanobainitic Steel

Acta Metallurgica Sinica (English Letters), 2014
A 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, Linxiu Du, Na Zhou, Xianghua Liu   +3 more
openaire   +1 more source

Producing Nanobainite on Carburized Surface of a Low-Carbon Low-Alloy Steel

Journal of Materials Engineering and Performance, 2022
Conducting the carburizing process on the surface layer of low-carbon steel and subsequent austempering heat treatment can be implemented to obtain nanobainite microstructure on the surface of steels. In this research, steel with 0.23 wt.% carbon was carburized for 3 h at 900 degrees C in a liquid salt bath containing sodium cyanide, sodium carbonate ...
Avishan, Behzad, Talebi, Peyman, Yazdani, Sasan, TEKELİ, SÜLEYMAN   +3 more
openaire   +2 more sources

Electron beam hardening of nanobainitic steel

Surface Engineering
Nanobainitic 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, Marek St Węglowski, Andrzej N. Wieczorek, Emilia Skołek   +3 more
openaire   +1 more source

Application of Advanced Experimental Techniques for the Microstructural Characterization of Nanobainitic Steels

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, Hossein Beladi, Xiang Yuan Xiong, Yoshitaka Adachi, Peter Hodgson   +4 more
openaire   +1 more source

Characterization of Isothermally Heat-Treated High Carbon Nanobainitic Steels

Journal of Materials Engineering and Performance, 2013
Isothermal 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, S. D. Bhole, E. Essadiqi, D. L. Chen   +3 more
openaire   +1 more source