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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 168-170Nucleation of Intragranular Acicular Ferrite in...

Nucleation of Intragranular Acicular Ferrite in the Heat Affected Zone of Ti-Bearing Hsla Steel

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Abstract:

The nucleation of intragranular acicular ferrite in the welding heat-affected zone of Ti-bearing high strength low alloy steel was investigated by means of electron microscopy. It was found that intragranular acicular ferrite nucleation sites under different welding heat inputs (4.3kJ/mm and 10.0kJ/mm) are titanium complex oxides on which manganese (Mn) sulfides are precipitated. The complex compound is a Si and Mn-enriched oxide. Analysis of the oxide by means of enenrgy dispersive X-ray spectrum indicated that the oxide has higher absorption ability of Si than that of Mn.

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Periodical:

Advanced Materials Research (Volumes 168-170)

Pages:

837-841

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.168-170.837

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Online since:

December 2010

Authors:

Li Qing Zhang, Kai Ming Wu

Keywords:

Heat Affected Zone (HAZ), High Strength Low Alloy Steel, Intragranular Acicular Ferrite, Nucleation, Oxide Metallurgy

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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