Influence of acicular ferrite and bainite microstructures on toughness for an ultra-low-carbon alloy steel weld metal

Manual metal arc (MMA) welds were prepared in a 0.03 wt.% carbon steel to determine the toughness of the resultant microstructures containing acicular ferrite and bainite. Three microstructures were produced in the weld metal and tested as Charpy impact samples: acicular ferrite, acicular ferrite +...

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Veröffentlicht in:	Journal of materials science letters 1993-01, Vol.12 (16), p.1290-1293
Hauptverfasser:	YANG, J. R, HUANG, C. Y, HUANG, C. F, AOH, J. N
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Exact sciences and technology Fractures Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy
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Beschreibung
Zusammenfassung:	Manual metal arc (MMA) welds were prepared in a 0.03 wt.% carbon steel to determine the toughness of the resultant microstructures containing acicular ferrite and bainite. Three microstructures were produced in the weld metal and tested as Charpy impact samples: acicular ferrite, acicular ferrite + bainite and bainite. Results indicate that at the test temperature of --70 deg C full bainitic structures have inferior toughness compared to those which contain acicular ferrite.
ISSN:	0261-8028 1573-4811
DOI:	10.1007/bf00506341