Production of filler rods for repair welding of ML12 (ZK51) magnesium alloy castings
https://doi.org/10.17073/0021-3438-2022-3-47-56
Abstract
In magnesium alloys castings, the casting defects such as shrinkage porosity are often occur. Such defects can be suppressed by repair welding or surfacing using a special filler rod. Unfortunately, in Russia, the low amount of filler rod is consumed. Therefore, native enterprises do not manufacture it, limiting themselves to imports or homemade low-quality substitutes. Nevertheless, there is a need for filler rod, and recently it has become unprofitable to replace them with imported materials due to a significantly increased price. Therefore, there is a need to study the technology of its production to replace imported filler rod with native material. Magnesium alloys based on the Mg–Zn–Zr (La, Nd) system: SV1, SV122, and ML12 (ZK51) that used as a filler rod for repair welding of ZK51 alloy castings were studied in this work. The samples were obtained by permanent mold casting into aluminum molds followed by hot extrusion into a filler rod with a diameter of 4 mm. It was shown that all the investigated alloys could be obtained in the form of a rod with a diameter of 4 mm. Therefore, the investigated rod samples from the SV122 alloy were used as filler material for repair welding of ZK51 magnesium alloy castings. The weld seam in the T1 condition has an ultimate tensile strength (UTS) about 80 % of the UTS of the casting material.
About the Authors
A. V. KoltyginRussian Federation
Candidate of Technical Sciences, Associate Professor
Department of Foundry technologies and artistic processing of materials
119991
Leninsky Ave., 4
Moscow
V. E. Bazhenov
Russian Federation
Candidate of Technical Sciences, Associate Professor
Department of Foundry technologies and artistic processing of materials
Moscow
S. A. Tavolzhanskii
Russian Federation
Candidate of Technical Sciences, Associate Professor
Department of Foundry technologies and artistic processing of materials
Moscow
S. V. Matveev
Russian Federation
Candidate of Technical Sciences, Head of the Department
Department of the Engineering Center "Foundry technologies and materials"
Moscow
I. V. Plisetskaya
Russian Federation
Candidate of Technical Sciences, senior lecturer
Department of the Engineering Center "Foundry technologies and materials"
Moscow
M. V. Belov
Russian Federation
Candidate of Technical Sciences, Deputy Director
Moscow
A. V. Samokhin
Russian Federation
shop manager
Moscow
V. D. Belov
Russian Federation
Doctor of Technical Sciences, Head of the Department
Department of Foundry technologies and artistic processing of materials
Moscow
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Review
For citations:
Koltygin A.V., Bazhenov V.E., Tavolzhanskii S.A., Matveev S.V., Plisetskaya I.V., Belov M.V., Samokhin A.V., Belov V.D. Production of filler rods for repair welding of ML12 (ZK51) magnesium alloy castings. Izvestiya. Non-Ferrous Metallurgy. 2022;(3):47-56. (In Russ.) https://doi.org/10.17073/0021-3438-2022-3-47-56