Results 71 to 80 of about 731 (178)

Hydrogen Induced Crack Development in Submerged Arc Welded Steel Pipes

MATEC Web of Conferences, 2018
The current work examines hydrogen sensitivity in different pipeline steels (X65, X70 and X80 HSLA grades) from four productions. Hydrogen Induced Cracking (HIC) experiments were performed and then the welds were characterized via optical and scanning ...
Bouzouni Marianthi, Gavalas Evangelos, Chatzigeorgiou Filippos, Papaefthymiou Spyros   +3 more
doaj   +1 more source

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

In-situ investigation on the morphological evaluation of bainitic microstructure of medium C-steel

Discover Materials
The bainitic transformation behavior and microstructural evolution in C–Mn–Si steel were investigated using in-situ Laser Scanning Confocal Microscopy (LSCM) and dilatometry.
Soumyadarshi Saswat Mahapatra, Md. Basiruddin Sk, Prakash Srirangam, Soumitra Kumar Dinda   +3 more
doaj   +1 more source

Formation Temperature of Bainitic Ferrite in Si-Containing Steels

Materials Transactions, JIM, 1991
A metallographic study of isothermal-transformation products formed at various temperatures was made in 2%Si-1%Mn-0.34%C and 2%Si-1%Mn-0.59%C steels with particular emphasis on the formation mechanism of bainitic ferrite. In the 0.34%C steel, the austenite first decomposes into ferrite and then into pearlite in the later stage of transformation at 973 ...
Tsuzaki, Kaneaki, Nakao, Chikara, Maki, Tadashi   +2 more
openaire   +2 more sources

Effects of austempering on the microstructure and mechanical properties of high-strength nanostructured bainitic steel containing 3.5 wt% aluminum

Journal of Materials Research and Technology
This study aims to produce a cost-effective and low-density, high-strength nanostructured bainitic steel by optimizing the austempering process conditions.
Javad Behzadifar, Seyed Mohammad-Ali Boutorabi, Hassan Saghafian Larijani   +2 more
doaj   +1 more source

Microstructural Evolution and Tensile Properties of Nb-V-Ti-N Microalloyed Steel with Varying Nitrogen Contents

Metals
With the rapid development of long-distance transmission pipelines for oil and natural gas, pipeline steel is continuously evolving towards higher pressure, larger diameter, and thicker wall thickness.
Jiangcheng Liu, Kai Guo, Haote Ma, Jiangli He, Junchao Wang, Chuanyou Zhang, Tiansheng Wang, Qingfeng Wang   +7 more
doaj   +1 more source

A Comprehensive Understanding of Bainite Phase Transformation Mechanism in TRIP Bainitic-supported Ferrite Steel

International Journal on Advanced Science, Engineering and Information Technology
Mechanical parts on ships and automobiles are diverse in shape, size, and working conditions. They operate with static, cyclic, and shock loads in various environments at low and high temperatures. Therefore, materials need to be highly durable to ensure the reliability of parts and structures on ships and automobiles.
Van Nhanh Nguyen, Anh-Tuan Nguyen, Dinh Tuyen Nguyen, Huu Cuong Le, Văn Phúc Nguyễn   +4 more
openaire   +1 more source

Effect of prior martensite on bainitic transformation of high Si hypereutectoid steel

Journal of Materials Research and Technology
The paper discusses the effect of prior martensite on the bainitic transformation of a high Si hypereutectoid steel. The research uses a combination of experimental techniques, high-resolution dilatometry and X-ray diffraction analysis, and theoretical ...
Carlos Garcia-Mateo, Thomas Sourmail, Amandine Philippot, Lucia Morales-Rivas, Jose A. Jimenez   +4 more
doaj   +1 more source