Effects of ultrasonic impact treatment on pre-fatigue loaded high-strength steel welded joints

Zhang, Hai; Wang, Dongpo; Xia, Liqian; Lei, Zhenyu; Li, Yizhe

doi:10.1016/j.ijfatigue.2015.06.017

Cited by 35 publications

(13 citation statements)

References 17 publications

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“…Maximum compressive residual stresses of 20% and 62% of the steel yield strength in the transverse and longitudinal directions, were obtained very close to the weld toe. The longitudinal residual stress is within the range reported in several studies on welded steels with yield strengths below 1000 MPa [14,35,36,39,41,43]. However, the transverse residual stress seems to be relatively low.…”

Section: Effect Of Residual Stress On Fatigue Strengthsupporting

confidence: 80%

“…Previous studies [18,39] reported a large increase in surface hardness, as high as 100% as compared to the as-welded condition for HFMI treated welds. A depth of the hardened region of less than 1 mm has been obtained in most cases.…”

Section: Effect Of Hardness On Fatigue Strengthmentioning

confidence: 86%

“…However, Ghahremani [36] reported an average weld toe radius of 1.8 mm after HFMI treatment which is similar to the lower weld toe radii (Table 7) in this study. Previous studies [7,[38][39][40] They suggested that a proper HFMI treatment is achieved when D ave is between 0.25 mm and 0.5 mm. A value above or below this range was considered to be over-and under-treatment, respectively.…”

Section: Weld Toe Geometrymentioning

confidence: 99%

See 2 more Smart Citations

Effect of high frequency mechanical impact treatment on fatigue strength of welded 1300 MPa yield strength steel

Harati

Svensson

Karlsson

et al. 2016

International Journal of Fatigue

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Section: Effect Of Residual Stress On Fatigue Strengthsupporting

confidence: 80%

Section: Effect Of Hardness On Fatigue Strengthmentioning

confidence: 86%

Section: Weld Toe Geometrymentioning

confidence: 99%

See 1 more Smart Citation

Effect of high frequency mechanical impact treatment on fatigue strength of welded 1300 MPa yield strength steel

Harati

Svensson

Karlsson

et al. 2016

International Journal of Fatigue

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“…Ultrasonic Peening (UP) is a promising technology in the application of High Power Ultrasound treatment for fatigue life improvement of welded structures [1,2]. Treatment of the welded joint is carried out by a peen with a diameter of 2-5 mm, which is made of high-strength steel.…”

Section: Introductionmentioning

confidence: 99%

Measurement of dissolved hydrogen distributions after ultrasonic peening of heat-affected zone of welded joint

Polyanskiy¹,

Belyaev²,

Arseniev³

et al. 2016

AIP Conference Proceedings

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“…Thus, surface nanocrystallization techniques such as surface mechanical attrition treatment (SMAT) [9], shot peening (SP) [10], hammer peening [11], laser shock peening (LSP) [12] and ultrasonic impact treatment (UIT) [13] are more attractive and expected to present new ideas to realize materials' nanostructured layer in various surface protection applications.Compared with the other mechanical surface treatment techniques mentioned above, it is demonstrated that the UIT is more convenient and economical and controllable to rapidly realize surface nanocrystallization over a large area [13,14]. Up to now, UIT has been more widely used to eliminate the welding residual stresses [14,15] being improved the microstructure of the near-surface region [16,17] and the fatigue behaviors of welded joints [18,19] through severe plastic deformation. Previous investigations reported that the UIT could generate compressive residual stress and refine the grains on surface layer of welded structures, resulting in the enhanced mechanical properties.…”

mentioning

confidence: 99%

Enhanced Wear Resistance of Iron-Based Alloy Coating Induced by Ultrasonic Impact

Zhao

Zhang

et al. 2019

Coatings

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Wear failures of components often occur and cause great economic losses in modern industry production. To obtain excellent wear resistance surface will help reduce the abrasion. Herein, a wear-resistant iron-based alloy coating was deposited on a low-carbon steel substrate by argon arc overlaying, and sequentially surface nanocrystallized through ultrasonic impact treatment (UIT). Micro-structural, mechanical property (including nanohardness and elastic modulus) and wear behavior changes of the coating before and after UIT were experimentally investigated. In addition, the wear mechanism variation owing to the application of UIT was discussed. The results show that a highly deformed nanocrystalline layer with an average grain size in the range of~100 nm was generated at a depth of approximately 34 µm from the treated coating surface, which contains a certain amount of the deformation-induced α'-martensite phase. Compared with the as-deposited coating, the coating after UIT processing exhibits considerable improvements in the ratio of nanohardness (H) to elastic modulus (E) and better wear resistance under the same wear test conditions. The wear mechanism has also changed from the adhesive type of the as-deposited coating to an abrasive type on the introduction of a nanocrystalline microstructure.have demonstrated that coatings with thicknesses on the order of millimeters produced by argon arc surfacing welding exhibit a dense microstructure, excellent strength and toughness as well as high wear resistance. Such coatings can even replace entire components and significantly improve the wear resistance [6]. Iron-based alloys known as their low cost and excellent comprehensive properties have drawn much attention and shown great potential application in different fields of industries [7,8]. Therefore, iron-based alloy coating on easy wear parts and components has positive contribution to extend their service life and improve their service performance. Unfortunately, high residual stress and deformation introduced during overlaying may change the shape and the size of components, which limits their use in certain demanding conditions. In this sense, appropriate surface treatment is crucial for the performance improvement of overlaying coating.Surface nanocrystallization owing to their unique microstructural characteristics exhibits superior physical, chemical, and mechanical properties and have attracted considerable interest as a viable alternative in protection applications [9]. Thus, surface nanocrystallization techniques such as surface mechanical attrition treatment (SMAT) [9], shot peening (SP) [10], hammer peening [11], laser shock peening (LSP) [12] and ultrasonic impact treatment (UIT) [13] are more attractive and expected to present new ideas to realize materials' nanostructured layer in various surface protection applications.Compared with the other mechanical surface treatment techniques mentioned above, it is demonstrated that the UIT is more convenient and economical and controllable to rapidly realize s...

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Effects of ultrasonic impact treatment on pre-fatigue loaded high-strength steel welded joints

Cited by 35 publications

References 17 publications

Effect of high frequency mechanical impact treatment on fatigue strength of welded 1300 MPa yield strength steel

Effect of high frequency mechanical impact treatment on fatigue strength of welded 1300 MPa yield strength steel

Measurement of dissolved hydrogen distributions after ultrasonic peening of heat-affected zone of welded joint

Enhanced Wear Resistance of Iron-Based Alloy Coating Induced by Ultrasonic Impact

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