Results 71 to 80 of about 7,583 (220)

Microstructure Development in a New Generation S1300‐Type Ultrahigh‐Strength Structural Steel on Tempering

steel research international, Volume 97, Issue 1, Page 524-542, January 2026.
Here, the microstructure evolution of a new generation ultrahigh‐strength S1300‐type structural steel has been investigated for direct‐quench and tempering route. Various stages of tempering are elucidated by thorough characterization, and a new strain‐size parameter of martensite is proposed to have a correlation with hardness, which will be useful in
Buddhadev Jana, Radhakanta Rana
wiley   +1 more source

Austempering Post‐Intercritical Austenitizing to Enhance Mechanical Properties of an Oil Country Tubular Goods Steel

steel research international, Volume 96, Issue 12, Page 211-227, December 2025.
A new austempering approach following intercritical austenitizing is explored to improve the mechanical behavior of API 5CT steel. By tailoring ferrite–bainite microstructures, the process achieves a balance of strength and ductility without the need for post‐quench tempering. The results highlight a cost‐effective alternative to conventional quenching
Paulo Henrique Cirilo, Paulo Sérgio Moreira, Geraldo Lúcio de Faria   +2 more
wiley   +1 more source

Thermomechanical Processing, Microstructure, and Mechanical Properties of Medium‐Mn Steel

steel research international, Volume 96, Issue 12, Page 252-260, December 2025.
The microstructure evolution and mechanical properties of a medium‐Mn steel are investigated after thermomechanical processing and isothermal holding at various temperatures. A fine multiphase structure of bainite, fresh or tempered martensite, and retained austenite are obtained.
Burak Barutçuoğlu, Özge Ararat, Ersoy Erişir, Serkan Oktay   +3 more
wiley   +1 more source

Deformation of inclusions in rail steel due to rolling contact [PDF]

, 2012
Rolling contact fatigue (RCF) is a significant problem in the rail industry as it causes rapid and difficult to detect cracks. Inclusions present in the material can have an adverse effect on the RCF life of rails.
Chard, Alison Elizabeth
core  

Evaluation of potential of high Si high C steel nanostructured bainite for wear and fatigue applications [PDF]

, 2013
The present study is concerned with the potential of high carbon, high silicon steel grades isothermally transformed to bainite at low temperature (
Elvira, R., García Caballero, Francisca, García Mateo, Carlos, Kuntz, M., Leiro, A., Smanio, V., Sourmail, Thomas, Teeri, T., Vuorinen, E., Ziegler, C.   +9 more
core   +1 more source

The Influence of Subcritical Annealing and Cold Working on the Hydrogen Embrittlement Susceptibility of X65 D Pipeline Steel

Materials and Corrosion, Volume 76, Issue 10, Page 1478-1496, October 2025.
This study investigated the effect of subcritical heat treatment and cold work on the hydrogen embrittlement (HE) susceptibility of the X65 D pipeline steel. Hydrogen charging reduced the ductility of all specimens. Both subcritical annealing and cold working decreased somewhat the degree of HE.
Joshua Hoschke, Md Fahdul Wahab Chowdhury, Maximilian Roethig, Clotario V. Tapia‐Bastidas, Jeffrey Venezuela, Yilei Shu, Evan Gray, Milos B. Djukic, Tom Depover, Kim Verbeken, Andrej Atrens   +10 more
wiley   +1 more source

Effect of rapid tempering at high temperature on microstructure, mechanical properties and stability of retained austenite of medium carbon ultrafine bainitic steel

Journal of Materials Research and Technology
Rapid tempering at high temperature is beneficial to release residual stress. However, the evolution of microstructure and mechanical properties of ultrafine bainitic steel after rapid tempering at high temperature is still unclear. In this research, the
Jianjun Wang, Hongguang Li, Qingchao Wang, Zhuanqin Liang, Shangjun Gao, Libin Sun, Xinliang Gao, Zhinan Yang, Yanguo Li, Fucheng Zhang   +9 more
doaj   +1 more source

MICROSTRUCTURAL CHARACTERISAZTION OF THERMO-MECHANICAL TREATED TRIP STEELS [PDF]

, 2007
The increasing demand for the reduction of automobiles CO2 emissions for environmental preservation leads the automotive industries towards the mechanical components weight reduction.
BARCELLONA, Antonio, CANNIZZARO, Luigi, PALMERI, Dina   +2 more
core   +1 more source

Impact Toughness and Fatigue Crack Propagation in Carbide‐Free Bainite: The Adverse Role of Retained Austenite and Martensite‐Austenite Islands

Fatigue &Fracture of Engineering Materials &Structures, Volume 48, Issue 10, Page 4217-4227, October 2025.
ABSTRACT The deformation behavior of carbide‐bearing bainite (CBB) and carbide‐free bainite (CFB) under various loading conditions is investigated. Retained austenite (RA) in CFB enhances strength and ductility only under uniaxial tension through gradual strain‐induced martensitic transformation, yet deteriorates impact toughness and fatigue crack ...
Oguz Gulbay, Alexander Gramlich, Ulrich Krupp   +2 more
wiley   +1 more source

Improving strength and ductility via ausforming combined with austempering through deformation-induced bainite refinement

Journal of Materials Research and Technology
The refinement of bainitic ferrite laths is one of the most critical ways to improve the combination of strength and ductility. However, low-temperature bainitic transformations in the microstructural evolution of carbide-free bainite in high-carbon ...
Jianhua Li, Peng Chen, Ning Xu, Dapeng Yang, Hongshuang Di, Hongliang Yi   +5 more
doaj   +1 more source