Study of Residual Stresses in Welded Joints of Heat-Resistant ML10 Magnesium Alloy After Electrodynamic Treatment

Lobanov, L.M.; Pashchin, N. А.; Savitskii, V. V.; Mikhodui, O.L.

doi:10.1007/s11223-014-9607-x

Cited by 4 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The investigations of EDT effect on regulation of residual stresses in welded joints of magnesium alloy were carried out. For this purpose, the specimens were used being the fragments of outer cylindrical shell of the intermediate body of the aircraft engine D-36 of 1.5 m diameter [2,3] manufactured of heat-resistant magnesium alloy ML10 ( Figure 3).…”

Section: Scientific and Technicalmentioning

confidence: 99%

“…On the outer surface of specimens the notches were applied having the length, width and depth of respectively 200, 2 and 4 mm, simulating fractures of the body [3]. Over the notched area a two-pass weld was produced using manual TIG welding with Sc-containing filler metal at the mode, presented in Table 1.…”

Section: Scientific and Technicalmentioning

confidence: 99%

“…In this case heat treatment does not completely eliminate the probability of fatigue cracks in the repair welds. This fact facilitates the search and development of alternative methods for reduction of level of residual stresses in welded joints, one of which is the electrodynamic treatment (EDT) [2,3], based on the simultaneous effect of current pulse and dynamic pressure of current-conducting electrode on product or weld. The application of EDT reduces the level of residual stresses in repair welds, which in many cases may be an alternative to heat treatment.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Application of electrodynamic treatment with amplitude-frequency control of current pulses for life extension of aircraft structures of light alloys

Lobanov¹,

Pashchin²,

Mikhoduj³

et al. 2016

The Paton Welding J.

View full text Add to dashboard Cite

The pulsed electric current (PEC) generator of a new generation with the controlled amplitude-frequency characteristics of PEC for electrodynamic treatment (EDT) of thin-sheet metal structures was designed and manufactured. The use of a new class of equipment allows a significant extension of capabilities of electrodynamic effects due to the controlled synchronization of the EDT dynamic and electric pulse components. The effect of EDT on reducing the level of residual welding stresses in magnesium alloy ML10 joints was investigated. As the investigated specimens the fragments of the shell of the intermediate body of the aircraft engine D-36 containing repair welds were used. It was found that EDT allows reducing the level of residual welding stresses from 120 to-40 MPa, providing their transition from tensile to compressive ones. It is shown that the local plastic deformation applying EDT of specimens of an aircraft wing stringer of aluminum alloy D16 in the area of technological holes 1.6-2.5 times increases the resistance to a delayed fracture. 9 Ref., 2 Tables, 14 Figures. K e y w o r d s : electrodynamic treatment, electric current pulse, aircraft structures, residual stresses, repair welding, body of aircraft engine, stringer, technological hole * According to the materials of the work performed within the frames of the target integrated program of the NAS of Ukraine «Problems of Life and Safe Operation of Structures, Constructions and Machines» (2013-2015).

show abstract

Section: Scientific and Technicalmentioning

confidence: 99%

Section: Scientific and Technicalmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Application of electrodynamic treatment with amplitude-frequency control of current pulses for life extension of aircraft structures of light alloys

Lobanov¹,

Pashchin²,

Mikhoduj³

et al. 2016

The Paton Welding J.

View full text Add to dashboard Cite

show abstract

Research progress of residual stress determination in magnesium alloys

Yuan

Zhang

Lian

et al. 2018

Journal of Magnesium and Alloys

View full text Add to dashboard Cite

Production of filler rods for repair welding of ML12 (ZK51) magnesium alloy castings

Колтыгин

Баженов

Tavolzhanskii

et al. 2022

Izv.VUZ. Tsvet. Met.

View full text Add to dashboard Cite

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.

show abstract

Study of Residual Stresses in Welded Joints of Heat-Resistant ML10 Magnesium Alloy After Electrodynamic Treatment

Cited by 4 publications

References 3 publications

Application of electrodynamic treatment with amplitude-frequency control of current pulses for life extension of aircraft structures of light alloys

Application of electrodynamic treatment with amplitude-frequency control of current pulses for life extension of aircraft structures of light alloys

Research progress of residual stress determination in magnesium alloys

Production of filler rods for repair welding of ML12 (ZK51) magnesium alloy castings

Contact Info

Product

Resources

About