Phase and Structural Transformations of Weld Metal under High-Velocity Impact

The change in the structure of welds made with a new welding wire and subjected to high-velocity impact was investigated by optical and scanning electron microscopy and X-ray diffraction analysis. It is shown that after welding, a structure consisting of martensite, δ -ferrite, and metastable austen...

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Bibliographic Details
Published in:Combustion, explosion, and shock waves explosion, and shock waves, 2020-06, Vol.56 (3), p.365-373
Main Authors: Tabatchikova, T. I., Morozova, A. N., Tereshchenko, N. A.
Format: Article
Language:English
Subjects:
Austenite
Classical and Continuum Physics
Classical Mechanics
Control
Delta ferrite
Dynamical Systems
Engineering
Heat treating
Martensite
Microhardness
Phase transitions
Physical Chemistry
Physics
Physics and Astronomy
Vibration
Weld metal
Welded joints
Welding wire
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Summary:The change in the structure of welds made with a new welding wire and subjected to high-velocity impact was investigated by optical and scanning electron microscopy and X-ray diffraction analysis. It is shown that after welding, a structure consisting of martensite, δ -ferrite, and metastable austenite is formed in the weld metal. The subsequent severe impact leads to hardening of the weld metal due to the transformation of metastable austenite to strain-induced martensite. Kinetic microindentation of the weld was performed.
ISSN:0010-5082
1573-8345
DOI:10.1134/S0010508220030144