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Secondary-hardened bainite

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topic and I fear is that this 1 because this good To understand may raise spatial phenomena In that last
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saying how do you distinguish the varied from the thing I think you answered it in your presentation rages waiting just 5 meters
we can distinguish because of this there and also sought yesterday we had the years a summons you comment
on the fact that Nigerian and molybdenum and it's all in the same house there has been no that doesn't happen like that any do you know whether Clinton's unicellular ignited it's an only because we use to for example now then I will be in the
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probably the peak of the Of the
hardening my question is what about Carbide formations strengthening formation in the Benedict might the structure itself so it's obviously incomplete because you can begin increases
strength by a secondary the treaty but can you tell us anything about the extent of precipitation during or after the Benedick transformation itself in the primary cooling stage of that's that's
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Metadaten

Formale Metadaten

Titel Secondary-hardened bainite
Alternativer Titel Secondary hardened bainite: APMS conference
Serientitel Adventures in the Physical Metallurgy of Steels 2013
Anzahl der Teile 31
Autor Yang, Jer-Ren
Lizenz CC-Namensnennung 3.0 Unported:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
DOI 10.5446/18607
Herausgeber University of Cambridge
Erscheinungsjahr 2013
Sprache Englisch
Produzent Central Sites Technical Services

Technische Metadaten

Dauer 32:48

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Fachgebiet Technik
Abstract A lecture given by Jer Ren Yang, at the Adventures in the Physical Metallurgy of Steels (APMS) conference held in Cambridge University. The metallurgy of a new, microalloyed bainitic steel that is capable of secondary hardening, accompanied by a simultaneous increase in strength and ductility is introduced. Ideally, a low carbon bainitic microstructure offers an excellent combination of good toughness, strength and weldability. The typical microstructure of low-carbon bainitic steels is composed of a fine substructured bainitic ferrite matrix with certain amounts of uniformly distributed carbon-rich second phases. These second phases, located among the sheaves of bainitc ferrite, consist basically of martensite/austenite (M/A) constituents. As a result of the low-angle character of boundaries of bainitic ferrite sub-unit within the sheaf structure, little or no evidence of ferrite boundaries could be detected by an optical microscope. It is worth further improving appreciation of the transformation and to evaluate the effect of substructure characteristics on the properties. The main purpose of this work was to investigate the effect of Mo addition on the development of microstructure in the hot-rolled low-carbon Nb-containing bainitic steels. The steel strips were fabricated by the combined processes of controlled-rolling and accelerated-cooling. Microstructural characterisation and mechanical testing for the corresponding strips have been investigated. The results show that the Mo addition has the advantage of producing a high volume fraction of bainite, which possesses a significant secondary hardening after tempering treatment. It is suggested that the secondary hardening effect provides an additional way to increase the strength of Nb-Mo-containing bainitic steels.

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