Results 51 to 60 of about 374 (167)

Formation of Bainite in a Low‐Carbon Steel at Slow Cooling Rate – Experimental Observations and Thermodynamic Validation

steel research international, Volume 96, Issue 2, February 2025.
A low‐carbon (0.23 wt%) carbide‐free bainitic steel is successfully developed with a total alloying addition of 4.9 wt%, which is relatively lower than alloying additions reported in similar category of steels. The present findings indicate that the currently designed low‐alloy steel composition is amenable to generation of nearly carbide‐free bainitic
Poulami Chakraborty, Suman Neogy, Nilabja Kanti Sarkar, Harish Donthula, Subir Kumar Ghosh, Hillol Kumar Nandi, Bandarupalli Gopalakrishna, Ilangovan Balasundar, Raghvendra Tewari   +8 more
wiley   +1 more source

Multiphase Ausformed Austempered Ductile Iron [PDF]

Archives of Metallurgy and Materials, 2017
AbstractDuctile iron was subjected to a total true strain (φt) of 0.3 either by applying φtin the austenite region or by apportioning it through applying a true strain of 0.2 in the austenite region before quenching to austempering temperature (TA) of 375°C, where a true strain of 0.1 is applied (ausforming).
Soliman M., Palkowski H., Nofal A.
openaire   +2 more sources

The Effect of Cryogenic Treatment on W360 and E38K Hot Work Tool Steels

steel research international, Volume 95, Issue 9, September 2024.
The cryogenic treatment facilitates the transformation of retained austenite to martensite to an undetectable limit, with about 3 times higher amount of the carbide precipitation for both steel types. Both steel types exhibit almost similar impact energy values at room temperature, but E38K steel has 2 times higher energy at 350 °C.
Caner Kiraz, Burak Birol, Ahmet Sağın
wiley   +1 more source

The Austempering Kinetics, Microstructural Development and Processing Window in the Austempered, FE-3.2C-4.8AL Compacted Graphite Cast Iron

Iranian Journal of Materials Science and Engineering, 2020
In the present study, austempering heat treatment was performed on compacted graphite aluminum cast iron with the chemical composition of 4.8%wt Al, 3.2%wt C, 0.81%wt Ni, 0.37%wt Mn, and 0.02%wt Mg.
A. Kazazi, S. M. Montazeri, S. M. A. Boutorabi   +2 more
doaj  

Determining Factors of Grain Size in Bainite Structure of Fe–2Mn–C Alloys

steel research international, Volume 95, Issue 8, August 2024.
The crystallographic variants and effective grain sizes of bainitic ferrite in Fe–2Mn–C alloys with various carbon contents are determined by local orientation measurements. Decrease in transformation temperature is beneficial for grain refinement of bainite structure although effects of carbon content are different between low‐carbon and high‐carbon ...
Tadashi Furuhara, Takeshi Kaneshita, Goro Miyamoto   +2 more
wiley   +1 more source

Microstructure and mechanical behaviors of grinding balls produced by dual matrix structure two-step austempering process

Journal of Materials Research and Technology, 2020
The austempered ductile iron (ADI) grinding balls were austenitized at 900 °C for 2 h and then incomplete quenched in a sodium silicate solution for 100 s, after that austempered in an isothermal furnace at 230 °C for 1 h.
Hongyu Zhou, phD, Yaqiang Li, phD, Zheng Yin, Master, Minrui Ran, phD, Shibin Liu, phD, Ying Huang, Master, Weidong Zhang, phD, Wenyue Zheng, phD, Junyou Liu, phD   +8 more
doaj   +1 more source

Microstructural evolution during austempering of a ASTM A-532 CLASS III type high chromium white cast iron undergoing abrasive wear

Revista Facultad de Ingeniería, 2017
This paper studies the influence of variables such as holding temperatures and times during austempering of High Chromium White Cast Iron (HCWCI), with the following chemical composition: Cr 25 %, C 3 %, Si 0.47 %, Mn 0.74 % and Mo 1.02 %. The aim of the
Oscar Fabián Higuera-Cobos, Jeison Bucurú-Vasco, Andrés Felipe Loaiza-Patiño, Mónica Johanna Monsalve-Arias, Dairo Hernán Mesa-Grajales   +4 more
doaj   +1 more source

Austempered Materials for Powertrain Applications [PDF]

Journal of Materials Engineering and Performance, 2011
Abstract Austempered irons and steels offer the design engineer alternatives to conventional material/process combinations. Depending on the material and the application, Austempering may provide the following benefits to producers of powertrain components like gears and shafts: ease of manufacturing, increased bending and/or contact ...
Lefevre, Justin, Hayrynen, Kathy L.
openaire   +1 more source

Bainitic Transformation and Properties of Low Carbon Carbide-Free Bainitic Steels with Cr Addition

Metals, 2017
Two low carbon carbide-free bainitic steels (with and without Cr addition) were designed, and each steel was treated by two kinds of heat treatment procedure (austempering and continuous cooling).
Mingxing Zhou, Guang Xu, Junyu Tian, Haijiang Hu, Qing Yuan   +4 more
doaj   +1 more source

MICROSTRUCTURAL CHARACTERISTICS, MECHANICAL AND WEAR BEHAVIOUR OF ALUMINIUM-ALLOYED DUCTILE IRONS SUBJECTED TO TWO AUSTEMPERING PROCESSES

Acta Polytechnica, 2020
The effect of aluminium addition and austempering processes on the microstructures, mechanical and wear properties of rotary melting furnace processed ductile irons was investigated.
Abdullahi Olawale Adebayo, Akinlabi Oyetunji, Kenneth Kenayo Alaneme   +2 more
doaj   +1 more source