Results 41 to 50 of about 1,034 (181)

Tailored Hardening and Isothermal Bainitizing of Additively Manufactured Nitrogen‐Enhanced Martensitic Chromium Steel

steel research international, EarlyView.
Tailored heat treatments transform additively manufactured high‐nitrogen martensitic Cr steel from austenitic as‐built condition to high‐hardness states. Isothermal bainitizing at 250°C generates an ultrafine nanostructure and achieves higher hardness than conventional hardening and tempering, highlighting a promising postprocessing route for laser ...
Philip König, Sebastian Weber, Jonathan Lentz   +2 more
wiley   +1 more source

Ultrafine bainitic steel produced through ausforming-quenching process

Journal of Materials Research and Technology, 2020
The coupling effects of ausforming and quenching process on isothermal bainite transformation behaviors, microstructures and mechanical properties of ultrafine bainitic steel have been analyzed.
H. Guo, Y.P. Fan, X.Y. Feng, Q. Li
doaj   +1 more source

Mechanical Property Comparison of AISI 5120 Steel Produced by LENS and DMD Systems

Engineering Reports, Volume 8, Issue 6, June 2026.
This study compares AISI 5120 steel produced by LENS and DMD processes, revealing trade‐offs in mechanical performance. LENS offers higher surface hardness and impact toughness, while DMD provides superior tensile strength and ductility. Findings guide process selection for application‐specific needs in automotive, aerospace, and heavy machinery ...
Thabiso Hopewell Sibisi, Ipfi Mathoho, Mxolisi Brendon Shongwe, Lerato Tshabalala, Samuel Skhosane, Rose Motau, Nomcebo Mndebele, Nontuthuzelo Vithi   +7 more
wiley   +1 more source

Two‐Stage Isothermal Transformation of Austenite into Nanobainite in a Chemically Inhomogeneous Medium‐Alloy Steel Containing 0.5 wt% C

steel research international, Volume 97, Issue 6, Page 3308-3327, June 2026.
The effect of chemical inhomogeneity on the microstructure and properties of nanobainitic steel is investigated. A two‐stage isothermal heat treatment that produced a more uniform microstructure is designed. The first‐stage temperature is higher than the MS of depleted bands; conversely, the second‐stage temperature is lower than the first‐stage ...
Bogdan Garbarz, Jarosław Marcisz, Marek Jelec, Władysław Zalecki, Radosław Rozmus, Zofia Kania‐Pifczyk   +5 more
wiley   +1 more source

Bainite Transformation in a Silicon Steel.

ISIJ International, 1997
The processes of upper bainite formation, the crystallographic aspects and the internal structure in a 1.83% silicon steel have been investigated. The T-T-T diagram is separated into two C-curves as in the case of steels containing strong carbide forming elements.
Jung, Yun Chul, Ohmori, Yasuya, Nakai, Kiyomichi, Ohtsubo, Hiroyuki   +3 more
openaire   +2 more sources

Accelerated Fatigue Testing of High‐Speed Steel

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 6, Page 2156-2166, June 2026.
ABSTRACT The staircase method is commonly employed in the characterization of metals to determine their fatigue limit. In this approach, the stress amplitude is systematically varied around the assumed fatigue limit in consecutive tests. However, its applicability for in‐process optimization in alloy design and development is limited by the large ...
Leonhard Gertlowski, Oliver Schenk, Stefan Müller, Santiago Benito, Sebastian Weber, Christoph Broeckmann   +5 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

Unraveling the Effect of Tramp Elements on Phase Transformations in Steels by Combining CALPHAD Modeling and Experiments

Advanced Engineering Materials, Volume 28, Issue 9, 6 May 2026.
This study investigates how tramp elements from increased scrap usage influence phase transformations in low‐alloyed steel. Combining dilatometry and microscopy reveal that tramp elements delay transformations, reduce critical cooling rates and increase hardenability.
Lukas Hatzenbichler, Daniel Marian Ogris, Phillip Haslberger, Matthew Galler, Oleksandr Glushko, Ronald Schnitzer   +5 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

The Acceleration of Phase Transformation and Strength–Toughness Match by Cerium Addition for Low‐Temperature Bainite

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT The engineering application of traditional nano‐bainite steel, also known as low‐temperature bainite steel, has been restricted due to its relatively low toughness and the prolonged isothermal transformation time during manufacturing processes.
Jin‐Zhou Zhang, Zhun‐Li Tan, Zi‐Ming Liu, Jian‐Zhong He, Yu Tian, Zheng‐Yuan Yuan, Bing‐Zhe Bai, Min Zhang   +7 more
wiley   +1 more source