2016 №02 (01) DOI of Article
2016 №02 (03)

Automatic Welding 2016 #02
Avtomaticheskaya Svarka (Automatic Welding), #2, 2016, pp. 14-18
Microstructural features of multilayer welds with different hot cracking sensitivity

K.A. Yushchenko, L.I. Markashova, A.V. Zvyagintseva, Yu.A. Khokhlova, O.S. Kushnaryova And N.O. Chervyakov
E.O. Paton Electric Welding Institute, NASU 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
The work deals with multilayer welds made with Inconel 52 wire, which have a high sensitivity to formation of hot ductility dip cracks in the heat-affected zone, and welds made with 52MSS wire, which turned out to be insensitive to formation of this type of cracks at a certain level of strain rates. Changes of structural characteristics of welds made with the above wires were studied by the methods of transmission microscopy, X-ray microprobe analysis, microhardness measurement, as well as electron backscatter diffraction. 9 Ref., 2 Tables, 8 Figures.
Keywords: multilayer surfacing, ductility dip cracks, nickel alloys, dislocation density, stacking fault energy, microhardness
Received:                22.12.15
Published:               12.04.16
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