Results 1 to 10 of about 337 (136)

Effect of martensite pre-quenching on bainite transformation kinetics, martensite/bainite duplex microstructures, mechanical properties and retained austenite stability of GCr15 bearing steel

Journal of Materials Research and Technology, 2021
In this work, effect of martensite pre-quenching on the subsequent bainite transformation kinetics of GCr15 bearing steel has been investigated by means of dilatometry.
Xiaohui Lu, Zhihao Yang, Dongsheng Qian, Jian Lan, Lin Hua   +4 more
doaj   +3 more sources

Effect of cold deformation on the bainite transformation kinetics, microstructural evolution and mechanical properties of austempered GCr15 bearing steel

Journal of Materials Research and Technology, 2023
In this work, the effect of prior cold deformation on the bainite transformation kinetics of austempered GCr15 bearing steel was investigated by means of dilatometry.
Xiaohui Lu, Rushan Lu, Zihan Jin, Dongsheng Qian, Jian Lan, Lin Hua   +5 more
doaj   +3 more sources

Bainite Transformation-Kinetics-Microstructure Characterization of Austempered 4140 Steel

Metals, 2020
Bainite transformation is a kinetic process that involves complex solid diffusion and phase structure evolution. This research systematically studies the bainite transformation of austempered 4140 steel in a wide range of isothermal temperatures, in ...
Jian G. Zhu, Xichen Sun, Gary C. Barber, Xue Han, Hao Qin   +4 more
doaj   +3 more sources

Bainite transformation under the effect of large stress in a carbide-free bainite steel

Journal of Materials Research and Technology, 2023
The effects of large stress on bainite transformation and microstructure were investigated by dilatometry, SEM and EBSD. The results show that the effect of large stress on bainite transformation includes two parts: mechanical driving force and prior ...
Mingxing Zhou, Junyu Tian, Wei Wang, Jun Wu, Zhengliang Xue, Guang Xu   +5 more
doaj   +1 more source

Transformation kinetics of carbide-free bainitic steels during isothermal holding above and below MS

Journal of Materials Research and Technology, 2020
The transformation kinetics of a low carbon bainitic steel was investigated using in situ confocal microscopy and dilatometry for isothermal treatments above and below the martensite start (MS) temperature.
Junyu Tian, Dr., Guang Xu, Dr., Haijiang Hu, Dr., Xiang Wang, Dr., Hatem Zurob, Dr.   +4 more
doaj   +1 more source

Nanostructured bainite transformation characteristics in medium-carbon steel subjected to ausforming and isothermal holding below martensite start temperature

Journal of Materials Research and Technology, 2023
The influence of martensite on the transformation rate of bainite as well as enhancement of various properties is well established, yet the combined influence of both the primary martensite and low temperature ausforming below the martensite start ...
Pentti Kaikkonen, Sumit Ghosh, Mahesh Somani, Jukka Kömi   +3 more
doaj   +1 more source

Kinetics of Bainite Transformation in Multiphase High Carbon Low-Silicon Steel with and without Pre-Existing Martensite

Metals, 2022
In the present study, the isothermal decomposition of austenite to bainite in 1.0 wt% carbon, 0.21% silicon steel during the partitioning step of a quenching and partitioning (Q&P) heat treatment has been investigated in a dilatometer in the temperature ...
Zeinab Babasafari, Alexey V. Pan, Farshid Pahlevani, Suk Chun Moon, Madeleine Du Toit, Rian Dippenaar   +5 more
doaj   +1 more source

Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel

Metals, 2020
The effect of the initial starting microstructures on the austenite reverse transformation kinetics is thoroughly studied in low-carbon steel. The different initial starting microstructures including the ferrite + pearlite, bainite, and martensite are ...
Junhua Hou, Binbin He
doaj   +1 more source

Bainite kinetic transformation of austempered AISI 6150 steel

Journal of Materials Research and Technology, 2020
This research studies the kinetic transformation and austempering temperature effect on the morphologies of bainite for AISI 6150 steel. A minimum of 10 different holding times for each austempering temperature were utilized.
Xue Han, Zhenpu Zhang, Yanhao Rong, Steven J. Thrush, Gary C. Barber, Hongyu Yang, Feng Qiu   +6 more
doaj   +1 more source

Kinetic models of multiple-stage martensite transformation and subsequent isothermal bainite formation excluding ε-carbide precipitation in intercritical quenching and partitioning steels

Materials & Design, 2019
The kinetic models of multiple-stage martensite transformation and subsequent isothermal bainite formation were investigated in intercritical quenching and partitioning steels. The modified K-M model that considering instantaneous kinetic characteristics
Fei Peng, Yunbo Xu, Dingting Han, Xingli Gu   +3 more
doaj   +1 more source