Increasing the Corrosion Fatigue Resistance of Welded Joints by High-Frequency Mechanical Peening

Knysh, V. V.; Solovei, S.O.; Kir'yan, V. I.; Bulash, V. N.

doi:10.1007/s11223-018-9988-3

Cited by 10 publications

(8 citation statements)

References 6 publications

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“…In foreign and domestic papers of the recent years, the influence of UIT on corrosion resistance and corrosion fatigue of welded joints is ever increasingly investigated [19,[23][24][25][26][27]. At first, this is connected with the fact that within many years of investigations the basic regularities of improvement of the fatigue characteristics of welded joints in air (without influence of corrosive environment) depending on the strength class of steel, type of welded joint, characteristics of the loading cycle, etc.…”

Section: Abstract : Welded Joint Corrosion Surface Plastic Dmentioning

confidence: 99%

“…In the work [27] the results of tests of T-welded joints of low-alloyed steel 10KhSND (s y = 390 MPa) in air and in corrosive environment (3 % solution of NaCl) in the initial state after welding and after hardening applying UIT are given. It was established that the corrosive environment reduces the limit of endur-ance margin based on 2•10 6 cycles of stress changes of welded joints in the initial state by 15 % (from 124 to 10 5 MPa), and by 29 % (from 260 to 185 MPa in the hardened state applying UIT).…”

Section: Abstract : Welded Joint Corrosion Surface Plastic Dmentioning

confidence: 99%

See 1 more Smart Citation

Vacuum diffusion welding of foil from powder nickel-chromium alloy

Gusarova¹,

Potapov²,

Manko³

et al. 2017

The Paton Welding J.

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Section: Abstract : Welded Joint Corrosion Surface Plastic Dmentioning

confidence: 99%

Section: Abstract : Welded Joint Corrosion Surface Plastic Dmentioning

confidence: 99%

Vacuum diffusion welding of foil from powder nickel-chromium alloy

Gusarova¹,

Potapov²,

Manko³

et al. 2017

The Paton Welding J.

View full text Add to dashboard Cite

“…A high tendency to pitting formation of the joint can be explained by the appearance of tensile stresses in the surface layer [7], enrichment of border areas of the columnar crystallite cells near the surface of weld metal with sulfur and other impurities, and the…”

Section: Industrialmentioning

confidence: 99%

“…The resistance to pitting corrosion of austenitic steel 12Kh18N10T increases by tensile deformation with the formation of martensitic α´-phase [5]. The increase in resistance against stress corrosion and corrosion fatigue failure are positively affected by rollers running, shot blasting, scratching by metallic brush, reduction of roughness of stainless steel surface and its welded joints, as well as high-frequency machining treatment of welded joints of low-alloyed steels [6][7][8].…”

mentioning

confidence: 99%

Extension of service life of welded tanks of stainless steel by increasing pitting resistance

Kulik¹,

Osadchuk²,

Nyrkova³

et al. 2016

The Paton Welding J.

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During long service of the tanks, manufactured of stainless steel, the pits are formed on the surface contacting with periodically preheated aggressive liquid, mainly in welded joints, and the danger of through fracture of wall arises. The aim of the work was to increase the reliability and longevity of tanks for storage of aggressive liquid, first of all, by increasing the resistance of welded joints against pitting formation. The specimens, being untreated and mechanically treated in different ways with penetration of the untreated surface and polished sheet steel 12Kh18N10T were subjected to accelerated tests for resistance against pitting corrosion at room temperature and preheatings of FeCl 3 solution similar to the technological ones. The resistance against pitting corrosion of welded joints is significantly increased after abrasive treatments, surface peening to a lesser extent and is independent of the surface roughness. The pitting resistance is also increased by replacing the indirect preheating of solution through the specimen to its direct preheating by the immersed heater. The results of the work are advisable for using in manufacture, repair and service of chemical, petrochemical, food and other equipment. 9 Ref., 2 Tables, 5 Figures.

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“…Over the recent years, investigations have been actively pursued to establish the effectiveness of SPD application to improve the characteristics of corrosion fatigue and corrosion resistance of metals and their welded joints [2][3][4][5][6][7][8][9][10][11][12]. Some works on these subjects are devoted to effectiveness of application of such SPD method, as high-frequency mechanical peening (HFMP) [3,7,9,11,12] (known in foreign publications as ultrasonic impact treatment). So, in [9] it was shown that depending on technological parameters of HFMP performance, corrosion resistance of strengthened surface layer of the material, determined by corrosion potential, can both increase, or decrease relative to base material.…”

mentioning

confidence: 99%

Improvement of cyclic fatigue life of tee welded joints by high-frequency mechanical peening under the conditions of higher humidity and temperature

Knysh¹,

Solovej²,

Nyrkova³

et al. 2016

The Paton Welding J.

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The study provides experimental evidence of effectiveness of application of high-frequency mechanical peening (HFMP) to improve the fatigue resistance characteristics of tee welded joints in metal structures, which operate under moderate climatic conditions. Corrosion damage characteristic for such structures after long-term service was achieved by soaking the welded joint in G4 humidity chamber at increased humidity and temperature for 1200 h. Metallographic studies were performed of the weld zone and HAZ in as-welded (unstrengthened) and HFMP-strengthened states before and after corrosive medium impact. It is established that as a result of HFMP strengthening, the joint resistance to the impact of higher humidity and temperature becomes higher. Fatigue tests of welded joints in the initial and strengthened states before and after soaking in the humidity chamber were performed. It is found that strengthening by HFMP technology before the corrosive impact allows increasing the limited endurance limit, based on 2•10 6 cycles, of tee welded joints by 48 % and increasing the cyclic fatigue life 6-8 times. 12 Ref., 1 Table, 7 Figures.

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Increasing the Corrosion Fatigue Resistance of Welded Joints by High-Frequency Mechanical Peening

Cited by 10 publications

References 6 publications

Vacuum diffusion welding of foil from powder nickel-chromium alloy

Vacuum diffusion welding of foil from powder nickel-chromium alloy

Extension of service life of welded tanks of stainless steel by increasing pitting resistance

Improvement of cyclic fatigue life of tee welded joints by high-frequency mechanical peening under the conditions of higher humidity and temperature

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