Results 61 to 70 of about 59,106 (209)

Insights Into Paint‐Bake Toughening of Resistance Spot Welds of a 2.0 GPa Warm‐Stamped Medium‐Mn Steel

steel research international, EarlyView.
Paint baking of resistance spot welded joints of 2.0 GPa warm‐stamped medium‐Mn steel activates low‐temperature tempering, forming fine cementite in the fusion zone and enhancing toughness. Crack propagation resistance increases, shifting the failure mode from partial interfacial to complete pullout, with peak load and energy absorption rising ...
Sunusi Marwana Manladan, Savyasachi Nellikode, YeoJin Jang, Sumin Lee, Dileep Chandran Ramachandran, Sung‐bo Heo, Jinyoung Lee, Young‐Kook Lee, Yeong‐Do Park   +8 more
wiley   +1 more source

Introducing nano-VC precipitates makes ultrafine bainitic steel a better combination of strength, ductility, and toughness

Materials Research Letters
Simultaneously enhancing the strength, plasticity, and toughness of metal materials has been a prominent research objective. In this study, the precipitation of nano-scale vanadium carbide particles at a lower tempering temperature is controlled to ...
Zhuanqin Liang, Hongguang Li, Cuicui Chen, Huajun Fu, Xiaoyong Feng, Xinliang Gao, Zhinan Yang, Fucheng Zhang   +7 more
doaj   +1 more source

Elucidating the heat input on CGHAZ microstructure and its irregular effect on impact toughness for a novel V–N microalloying weathering steel

Journal of Materials Research and Technology, 2023
This study investigated the effect of heat inputs on coarse-grained heat affected zone (CGHAZ) microstructure and impact properties of a novel vanadium (V) and nitrogen (N) microalloyed weathering steel via a Gleeble™ system, revealing the metallurgical ...
Bing Hu, Genhao Shi, Qiuming Wang, Liyang Zhao, Huibing Fan, Yucan Tang, Wei Wang, Qingfeng Wang, Riping Liu   +8 more
doaj   +1 more source

Crash Behavior of DP800–DP1000 Advanced High‐Strength Steel’s Dissimilar Resistance Spot Welded Joints Under Quasi‐static and High Strain Rates

steel research international, EarlyView.
The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
wiley   +1 more source

Mechanism of the Transition from Bainite to Acicular Ferrite

Materials Transactions, JIM, 1991
The factors controlling the transition from a microstructure consisting of austenite grain boundary nucleated sheaves of bainite, to one containing intragranularly nucleated plates of acicular ferrite are explored. The work confirms that in weld metals containing inclusions, the transition from bainite to acicular ferrite can be stimulated of the prior
Babu, S. S., Bhadeshia, H. K. D. H.
openaire   +2 more sources

Hydrogen Permeation in Nanostructured Bainitic Steel

, 2016
Hydrogen permeation of nanostructured bainitic steel, produced at two different transformation temperatures, i.e., 473.15 K (200 A degrees C) BS-200 and 623.15 K (350 A degrees C) BS-350, was determined using Devanathan-Stachurski hydrogen permeation ...
Kannan, M. Bobby, Oluwole Kazum, Ilana B. Timokhina, Hossein Beladi, Kazum, Oluwole, Timokhina, Ilana B., Yinghe He, Beladi, Hossein, He, Yinghe, M. Bobby Kannan   +9 more
core   +1 more source

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

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, Volume 28, Issue 17, 9 September 2026.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Alteration of Phase Transformation Behavior and Prior Austenite Grain Structure Due to Elevated Tramp Element Concentrations in a Hypoeutectoid Steel

steel research international, Volume 97, Issue 8, Page 4293-4305, August 2026.
The phase transformation behavior of a hypoeutectoid steel is studied in comparison with alloys containing higher concentrations of tramp elements, simulating high recycling rates. The examination of microstructures reveals that the tramp elements facilitate the formation of displacive phases along with retained austenite.
Lukas Hatzenbichler, Marek Gocnik, Phillip Haslberger, Matthew Galler, Andreas Stark, Oleksandr Glushko, Jozef Keckes, Ronald Schnitzer   +7 more
wiley   +1 more source

The effect of microstructure on the initial corrosion behavior of low carbon steel in simulated coal solution

Materials Research Express
The service life of weathering steels in wagon body was determined by their corrosion resistance directly. This study investigated the influence of microstructure on the initial corrosion behavior of low carbon steels, systematically.
Chunyu He, Wei Yu, Di Tang
doaj   +1 more source