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Investigations of Microstructure of Resistance Spot-Welded Joints Made of HSLA340 and DP600 Steels / Badanie Mikrostruktury Złączy Zgrzewanych Punktowo Ze Stali HSLA340 I DP600
2012
Archives of Metallurgy and Materials
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The paper presents results of metallographic investigations of spot welds made of high-strength steel HSLA340 and dual-phase DP600 steel. Low-carbon martensite microstructure was found in the weld nugget of HSLA steel. The DP600 steel shows martensite and bainite microstructure. For both steels, no carbides of microadditives were found because they dissolved in liquid nugget and could not precipitate again because of rapid heat abstraction. Moreover, no transcrystallisation was found in both
doi:10.2478/v10172-012-0120-6
fatcat:lavdsk64lvcpjj4cajvhc2etwq