Results 31 to 40 of about 19,906 (261)

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

Variant Pairing of Lath Bainite and Martensite in an Ultra-High-Strength Steel

Metals, 2022
The mixed structure of lath bainite and martensite was obtained by isothermal transformation tests at 698 K, 673 K and 623 K in ultra-high-strength steel. The interweaving mode of lath bainite and martensite was revealed by colored metallography and band
Meiying Li, Shun Wang, Tao Jia, Xianming Zhao   +3 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

A semi-physical α-β model on bainite transformation kinetics and carbon partitioning

, 2021
A semi-physical kinetic model with two adjustable parameters is proposed for prediction of the isothermal bainite transformation and carbon redistribution in steels.
Wen-Wen Wei, P. Retzl, E. Kozeschnik, Erwin Povoden-Karadeniz   +3 more
semanticscholar   +1 more source

Influence of Austenitisation Temperature and Time on Martensitic and Isothermal Bainite Phase Transformation of Spring Steel

Metals, 2022
The influence of austenitisation temperature and time on the martensitic and isothermal bainite transformation of 51CrV4 spring steel was analysed. Based on the analysis of dilatometric curves, the martensite start temperatures (MS) were determined at ...
Anže Bajželj, Jaka Burja
doaj   +1 more source

Intrinsic Mechanisms of Ductile-brittle Transition for F460 Steel Welding Coarse Grained Heat Affected Zones with Different Heat Inputs

Cailiao gongcheng, 2016
Coarse grain heat affected zone (HAZ) of F460 steel was simulated by a Gleeble 3800 thermo-mechanical simulator. The microstructure, critical event of the HAZ formed at various heat inputs (E) were characterized and determined by optical microscopy (OM ...
LI Jing, CAO Rui, MAO Gao-jun, LIU Dong-sheng, CHEN Jian-hong   +4 more
doaj   +1 more source

Effect of recrystallization on bainite transformation and mechanical properties of complex phase steel with high formability (CH steel)

Journal of Materials Research and Technology, 2023
Herein, the effect of recrystallization on the bainite transformation and mechanical properties of CH steel were investigated using SEM, TEM, EBSD, dilatometry, and tensile testing machine.
Xiaohong Chu, Yan Zhao, Yuhuan Yang, Feng Zhou, Lei Liu, Zhengzhi Zhao   +5 more
doaj   +1 more source

Effect of Austenitizing Temperature on Mechanical Properties of the Mixed Bainite - Martensite Microstructure in CrMoV Steel [PDF]

Materials Research, 2017
The effect of austenitizing temperature on mechanical properties of the mixed bainite - martensite microstructure in CrMoV steel was studied in the present work.
Parsa Abbaszadeh, Shahram Kheirandish, Hassan Saghafian, Mohammad hossein Goodarzy   +3 more
doaj   +2 more sources

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

Modeling the effect of prior austenite grain size on bainite formation kinetics

Acta Materialia
While experiments show that refining the prior austenite grain size can either accelerate or decelerate bainite formation in steels, kinetic models based on the successive nucleation of bainitic ferrite subunits can only predict an acceleration.
Daniel dos Santos Avila, S. E. Offerman, M. Santofimia   +2 more
semanticscholar   +1 more source