Results 21 to 30 of about 8,165 (229)

Study of Melting Methods by Electric Resistance Welding of Rails

Metals, 2022
An analysis of the results of rail operation shows that up to a third of all rail breaks in the railway line and up to 12.9% of all withdrawn acute defective rails are associated with welded joints.
Viktor A. Rezanov, Nikita V. Martyushev, Vladislav V. Kukartsev, Vadim S. Tynchenko, Viktor A. Kukartsev, Anna V. Grinek, Vadim Y. Skeeba, Anatoly V. Lyosin, Antonina I. Karlina   +8 more
doaj   +1 more source

Interaction of martensite and bainite transformations and its dependence on quenching temperature in intercritical quenching and partitioning steels

Materials & Design, 2019
A series of quenching temperatures (QT) were applied to investigate the interaction of bainite and martensite transformations in intercritical quenching and partitioning steels with multiple-stage martensite transformation.
Fei Peng, Yunbo Xu, Jiayu Li, Xingli Gu, Xu Wang   +4 more
doaj   +1 more source

Deformation induced martensite characterization in Fe-30%Ni-5%Cu alloy [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2012
Deformation induced martensite properties were examined according to existing martensite morphology, crystallography and formation temperatures for different prior austenite homogenization conditions in Fe-30%Ni-5%Cu alloy.
Güler E., Güler M.
doaj   +1 more source

Effect of Quenching and Tempering on Mechanical Properties and Impact Fracture Behavior of Low-Carbon Low-Alloy Steel

Metals, 2022
Conventional quenching and tempering were employed to achieve the optimal strength and toughness of low-carbon low-alloy steel. The fracture behavior (crack initiation and propagation) of the steel in the impact process was also analyzed.
Yajing Zhang, Jianhua Yang, Daheng Xiao, Deng Luo, Chende Tuo, Huibin Wu   +5 more
doaj   +1 more source

A qualitative study of multiphase steel microstructure developed in four different steel alloys [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy
In this work, quench and partitioning (Q&P) heat treatment was performed on four different steel alloys in order to obtain multiphase steels with a microstructure of ferrite, martensite, bainite, and retained austenite.
Khraisat W.
doaj   +1 more source

Microstructures and Properties of Auto-Tempering Ultra-High Strength Automotive Steel under Different Thermal-Processing Conditions

Metals, 2021
Automotive steels with ultra-high strength and low alloy content under different heating and cooling processes were investigated. It was shown that those processes exhibited a great influence on the performance of the investigated steels due to the ...
Han Jiang, Yanlin He, Li Lin, Rendong Liu, Yu Zhang, Weisen Zheng, Lin Li   +6 more
doaj   +1 more source

In Situ Study of Phase Transformations during Non-Isothermal Tempering of Bainitic and Martensitic Microstructures

Metals, 2017
Phase transformations during non-isothermal tempering of bainitic or martensitic microstructures obtained after quenching of a medium-carbon low-alloy steel was studied.
S. Hesamodin Talebi, Hadi Ghasemi-Nanesa, Mohammad Jahazi, Haikouhi Melkonyan   +3 more
doaj   +1 more source

Training-Induced Criticality in Martensites [PDF]

Physical Review Letters, 2007
We propose an explanation for the self-organization towards criticality observed in martensites during the cyclic process known as `training'. The scale-free behavior originates from the interplay between the reversible phase transformation and the concurrent activity of lattice defects.
FRANCISCO JOSE PEREZ RECHE, LEV TRUSKINOVSKY, ZANZOTTO, GIOVANNI   +2 more
openaire   +4 more sources

Structures and Mechanical Properties of Some Dual-Phase Steels with Low Manganese Content

Metals, 2022
In recent years, to reduce cars costs, research has been conducted on dual-phase steels with low manganese content (below 1.0%). This study investigated the influence of technological parameters of heat treatment (heating temperature and cooling medium ...
Constantin Dulucheanu, Traian Lucian Severin, Delia Aurora Cerlinca, Luminita Irimescu   +3 more
doaj   +1 more source

Lattice deformations at martensite-martensite interfaces in Ni-Al [PDF]

Le Journal de Physique IV, 2001
The atomic configurations at macrotwin interfaces between microtwinned martensite plates in $Ni_{65}Al_{35}$ material are investigated using high resolution transmission electron microscopy (HRTEM). The observed structures are interpreted in view of possible formation mechanisms of these interfaces.
Schryvers, D., Boullay, Ph., Kohn, R., Ball, J.   +3 more
openaire   +4 more sources