Results 31 to 40 of about 60,100 (278)

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of the results of rail operation shows that up to a third of all rail breaks in the railway line and up to 12.9% of all withdrawn acute defective rails are associated with welded joints.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 theoretical review of the operation of vibratory stress relief with particular reference to the stabilization of large-scale fabrications [PDF]

, 2011
Vibratory stress relief (VSR) is widely used on large welded fabrications to stabilize the structures so that they do not distort during further machining or during operational duty.
C Walker, Gnirss G., Lusk M. T., Munsi A. S. M. Y., Porter D. A., Rao D., Shi W.   +6 more
core   +1 more source

NiTi shape-memory transformations: minimum-energy pathways between austenite, martensites, and kinetically-limited intermediate states [PDF]

, 2014
NiTi is the most used shape-memory alloy, nonetheless, a lack of understanding remains regarding the associated structures and transitions, including their barriers.
Johnson, Duane, Johnson, Duane, Zarkevich, Nikolai, Zarkevich, Nikolai   +3 more
core   +4 more sources

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

Influence of pre-existing martensite on the wear resistance of metastable austenitic stainless steels [PDF]

, 2016
The effect of pre-existing martensite on the sliding wear behavior of a commercial metastable austenitic stainless steel was investigated. Two different steel conditions were considered: annealed (with a fully austenitic microstructure) and cold rolled ...
Fargas Ribas, Gemma, Mateo García, Antonio Manuel, Roa Rovira, Joan Josep   +2 more
core   +2 more sources

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