Zviahintseva H. Effect of alloying with niobium and molybdenum in the formation of cracks in welded joints stable austenitic Ni-Cr-Fe alloys

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0516U000725

Thesis Registration Form

0516U000725.pdf

Applicant for

Specialization

  • 05.02.01 - Матеріалознавство

05-10-2016

Specialized Academic Board

Д26.182.02

Essay

Thesis is devoted to the study of the mechanism of formation and rules of propagate of hot cracks at the micro level in the ductility-dip temperature range 600-1000 C in multipass welds with stable austenitic structure. Alloying systems Ni-Cr-Fe and Ni-Cr-Fe-Nb-Mo were investigated. Comparative evaluation of the sensitivity to hot cracking of the welds Ni-Cr-Fe-Nb-Mo, as well as with Ni-Cr-Fe, tested by the PVR-Test procedure, showed that the Ni-Cr-Fe-Nb-Mo welds were more than 25 times more resistant to ductility-dip cracking

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Files

Диссертация_Звягинцева_ полная.doc

Диссертация_Звягинцева_ полная.doc

автореферат_Звягинцева.doc

автореферат_Звягинцева.doc

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