Abstract
Assessment of susceptibility of multipass welds, produced by using wires ERNiCrFe-7 (IN52) and ERNiCrFe-13(IN52MSS), to crack formation was carried out. The PVR test was used to determine susceptibility to cracking. This test uses forced deformation of specimens being welded at a variable rate where the criterion of sensitivity to crack formation is the presence of cracks and their number at the specimen surface as a function of the rate of forced deformation. Welds made using IN52 have high sensitivity to the formation of ductility-dip cracks (DDC) in the weld metal heat-affected zone (HAZ) as compared with IN52MSS, which were not sensitive to the formation of cracks of this type at the same range of deformation rates. The characteristics of plastic deformation of both the weld metals were determined using transmission microscopy and electron backscattered diffraction (EBSD).
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Yushchenko, K.A., Savchenko, V.S., Zvyagintseva, A.V., Chervyakov, N.O., Markashova, L.I. (2016). Comparative Evaluation of Mesoscale Sensitivity to Crack Formation in Multi-pass Welds Using Wires IN52 and IN52MSS. In: Boellinghaus, T., Lippold, J., Cross, C. (eds) Cracking Phenomena in Welds IV. Springer, Cham. https://doi.org/10.1007/978-3-319-28434-7_10
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