Journal ArticleDOI
Dissolution and precipitation behaviour in steels microalloyed with niobium during thermomechanical processing
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TLDR
In this article, the thermomechanical processing of high strength low allow (HSLA) steels during low-temperature roughing, followed by rapid reheating to higher temperatures was investigated to better understand the Nb dissolution kinetics in austenite, and the subsequent precipitation behavior during the final finishing passes.About:
This article is published in Acta Materialia.The article was published on 2015-09-15. It has received 101 citations till now. The article focuses on the topics: Microalloyed steel & Austenite.read more
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Thermomechanical processing of advanced high strength steels
Jingwei Zhao,Zhengyi Jiang +1 more
TL;DR: A comprehensive review of recent progress in TMP of AHSSs, with focus on the processing-microstructure-property relationships of the processed AHSS, is provided in this paper.
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Effect of Nb on the hydrogen-induced cracking of high-strength low-alloy steel
TL;DR: In this paper, the effect of Nb microalloying on the HIC resistance of the high-strength low-alloy (HSLA) steel was studied, and it was shown that dispersed nanometer-sized NbC precipitates effectively increased the number of irreversible traps, hindered hydrogen aggregation, and enhanced the resistance to crack initiation and propagation.
Journal ArticleDOI
Super-high-strength and formable medium Mn steel manufactured by warm rolling process
TL;DR: In this paper, the authors demonstrate the design and manufacture of super-high strength medium Mn steel with good ductility, via the combination of warm rolling and V alloying, and demonstrate that the best combination of strength and ductility included 1.5 GPa ultimate tensile strength and 28% total elongation.
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Improving the resistance of high-strength steel to SCC in a SO2-polluted marine atmosphere through Nb and Sb microalloying
TL;DR: In this paper, a series of high-strength steels microalloyed with Nb and Sb were prepared via vacuum melting and hot rolling, and their resistance to stress corrosion cracking (SCC) was investigated through various tests in a SO2-polluted marine atmosphere.
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Dual role of nanosized NbC precipitates in hydrogen embrittlement susceptibility of lath martensitic steel
TL;DR: The effect of dispersed nanosized spherical NbC precipitates (∼10 nm) on the hydrogen embrittlement (HE) of martensitic steel was investigated by slow strain rate tests, hydrogen permeation tests, atom probe tomography and microstructural examination as discussed by the authors.
References
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Journal ArticleDOI
The Impurity‐Drag Effect in Grain Boundary Motion
TL;DR: In this paper, the drag on a grain boundary produced by an impurity atmosphere is examined in detail, and is found to depend on the velocity of the grain boundary relative to the diffusivity of the impurity and its interaction with the grain boundaries.
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Grain growth in metals
TL;DR: In this paper, the sizes and shapes of grains in annealed metals, characterised respectively by the grain diameters and the interfacial angles, are shown to be lognormally distributed in planar sections as well as in space.
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Effect of composition and process variables on Nb(C, N) precipitation in niobium microalloyed austenite
B. Dutta,C. M. Sellars +1 more
TL;DR: In this article, the authors used nucleation theory and the solubility product of niobium, carbon, and nitrogen in austenite to derive equations for the start of Nb (C, N) precipitation as a function of temperature and composition.