Results 31 to 40 of about 2,294 (204)

Grain Growth during Mechanical Processing of Austenitic Stainless Steel AISI 321

Metals, 2023
The kinetics of austenite grain growth during thermomechanical treatment of AISI 321 steel with a relatively high content of carbon (0.07 wt. %) and titanium (0.50 wt. %) were studied.
Liudmila V. Radionova, Danil V. Perevozchikov, Aleksandr N. Makoveckii, Victor N. Eremin, Alexander M. Akhmedyanov, Sergey V. Rushchits   +5 more
doaj   +1 more source

Analytical Modeling and Computer Simulation of the Transformation of Ellipsoids Nucleated on Random Parallel Planes [PDF]

Materials Research, 2020
A considerable number of engineering materials is polycrystalline. Cahn proposed analytical expressions for transformations nucleated at the grain faces, triple junctions, and quadruple junctions.
Gabriella Maria Silveira de Sá, Harison da Silva Ventura, Weslley Luiz da Silva Assis, Elena Villa, Paulo Rangel Rios   +4 more
doaj   +1 more source

Evaluation of the Austenitic Grain Growth by Thermoelectric Power Measurements [PDF]

Materials Science Forum, 2004
The influence of the deformation grade on the recrystallised grain size has been studied in the AISI 304 stainless steel. Therefore, cold rolled samples of this material with reductions varying between 30% and 80% were annealed at different temperatures and subsequently quenched. The mean austenitic grain sizes were measured and compared. Moreover, the
Carlos Capdevila, Tommy De Cock, Francisca G. Caballero, Carlos Garcia-Mateo, Carlos García de Andrés   +4 more
openaire   +2 more sources

Precipitation Criterion for Inhibiting Austenite Grain Coarsening during Carburization of Al-Containing 20Cr Gear Steels

Metals, 2021
AlN precipitates are frequently adopted to pin the austenite grain boundaries for the high-temperature carburization of special gear steels. For these steels, the grain coarsening criterion in the carburizing process is required when encountering the ...
Huasong Liu, Yannan Dong, Hongguang Zheng, Xiangchun Liu, Peng Lan, Haiyan Tang, Jiaquan Zhang   +6 more
doaj   +1 more source

The Austenite Grain Growth Behavior and Mathematical Model of 20CrMnTiH [PDF]

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016), 2016
The 20CrMnTiH gear steel was heated at temperature range from 850°C to 1250°C and at holding time range from 0s to 480s to obtain the law of austenite grain growth by using Gleeble-3500 thermo-simulation-machine in this research. The effects of heating temperature and holding time on austenite grain growth behavior were investigated.
Fei Qin, Ri-Jie Cong, Zhi-Xing Guan, Wei Feng, Feng Wang   +4 more
openaire   +1 more source

Heterogeneous Austenite Grain Growth in ASTM A213–T91 Steel

ISIJ International, 2007
Heterogeneous grain growth during austenitization in ASTM A213–T91 steel has been studied using a Gleeble 3500 thermomechanical simulator. Starting from a uniform, fine austenite grain size distribution after 1 min austenite holding time, a heterogeneous austenite grain size distribution was observed after 15 min austenite holding time at 1060°C and 1 ...
Zavaleta Gutiérrez, Nilthon, Luppo, María Inés, Danón, Claudio Ariel   +2 more
openaire   +2 more sources

Characterization of the Austenite Reformation Mechanisms as a Function of the Initial Ferritic State in a UNS S32304 Duplex Stainless Steel [PDF]

Materials Research, 2017
Aiming to better understand the effects of heat treatment parameters on Ferrite-Austenite phase transformation in a 2304 duplex stainless steel different thermal cycles were applied to this steel in a quenching dilatometer.
Charles Henrique Xavier Morais Magalhães, Geraldo Lúcio de Faria, Leonardo Evangelista Lagoeiro, Jéssica Dornelas Silva   +3 more
doaj   +1 more source

Evolution of ultrafine bainite microstructure during rapid heating process and the role of retained austenite

Journal of Materials Research and Technology, 2023
Rapid heat treatment is an important method to improve the properties of steel. Moreover, the study of the phase transformation process plays an important role in the formulation of rapid heat treatment.
Changbo Liu, Qiwen Fang, Jianjun Wang, Hongguang Li, Xubiao Wang, Dongyun Sun, Zhinan Yang, Fucheng Zhang   +7 more
doaj   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

Advanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Evolution of Austenite Recrystallization and Grain Growth Using Laser Ultrasonics

Metallurgical and Materials Transactions A, 2008
Laser ultrasonics is a noncontacting technique with which the attenuation of ultrasonic signals can be measured and related to the grain size of the investigated material. In the present article, a laser-ultrasonic grain-size measurement technique previously developed for various C-Mn and microalloyed steels has been extended to examine austenite ...
Sarkar, S., Moreau, A., Militzer, M., Poole, W.   +3 more
openaire   +3 more sources