What is it about?
Herein, the main objective is the characterization of the fusion zone and different heat-affected zones of austenitic Fe–Mn–Al–C LD steels microalloyed with Ti/B and Ce/La.
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Why is it important?
In general, weld nuggets shows three well-defined zones where γ-austenite is the main phase and AlN and MnS particles act as nuclei of complex precipitated particles of microalloying elements such as TiC and (Ce, La)O. A considerable decrease in hot-cracking was noticed in the microalloyed grades. A modulated structure of kappa-carbide particles was responsible of the largest hardness values (≈450 Vickers microhardness) in the second heat-affected zone.
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This page is a summary of: Metallographic, Structural, and Mechanical Characterization of Weld Nuggets in Fe–Mn–Al–C Low‐Density Steels Microalloyed with Ti/B and Ce/La by Gas Tungsten Arc Welding Process, steel research international, July 2021, Wiley,
DOI: 10.1002/srin.202100229.
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