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- Title
INVESTIGATION OF COMPOSITION AND STRUCTURE OF WELD METAL OF Kh20N9G2B TYPE MADE IN WET UNDERWATER WELDING.
- Authors
YUSHCHENKO, K. A.; BULAT, A. V.; KAKHOVSKY, N. Yu.; SAMOJLENKO, V. I.; MAKSIMOV, S. Yu.; GRIGORENKO, S. G.
- Abstract
The paper gives the results of investigations of variation of weld metal composition and structure in coated-electrode wet underwater arc welding of 12Kh18N10T steel. It is shown that unlike welding in air, in underwater welding the content of oxygen and hydrogen increases in the weld metal with simultaneous lowering of the quantity of ferritizers. Weld metal structure is characterized by presence of predominantly columnar crystallites, decreased fraction of grain-boundary δ-ferrite and increased volume fraction of oxide non-metallic inclusions, the quantity of which with 0.10 to 1.25 μm dispersion rises 1.5 to 2 times. 14 Ref., 4 Tables, 2 Figures.
- Subjects
UNDERWATER welding &; cutting; METAL cutting; ELECTRIC welding; METALLIC composites; HYDROGEN
- Publication
Paton Welding Journal, 2014, Issue 6/7, p135
- ISSN
0957-798X
- Publication type
Article
- DOI
10.15407/tpwj2014.06.29