Effect of Shot Peening on Redistribution of Residual Stress Field in Friction Stir Welding of 2219 Aluminum Alloy

Nie, Lin; Wu, Yunxin; Gong, Hai; Chen, Dan; Guo, Xudong

doi:10.3390/ma13143169

Cited by 22 publications

(9 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Shot peening is a finishing method, which consists in hitting the treated surface with small balls or cut wire shot. As a result of the process, the geometrical surface structure is altered, the surface layer is hardened, and compressive residual stresses are generated [ 1 , 2 , 3 ]. The surface layer formed during the shot peening process, and in particular compressive residual stresses, increase the fatigue strength and life of elements subjected to this process [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Surface Properties of Nickel Alloy Elements Exposed to Impulse Shot Peening with the Use of Positron Annihilation

Skoczylas

Zaleski

et al. 2021

Materials

View full text Add to dashboard Cite

The paper presents the results of experimental studies on the impact of impulse shot peening parameters on surface roughness (Sa, Sz, Sp, Sv), surface layer microhardness, and the mean positron lifetime (τmean). In the study, samples made of the Inconel 718 nickel alloy were subjected to impulse shot peening on an originally designed stand. The variable factors of the experiment included the impact energy, the diameter of the peening element, and the number of impacts per unit area. The impulse shot peening resulted in changes in the surface structure and an increase in surface layer microhardness. After the application of impulse shot peening, the analyzed roughness parameters increased in relation to post-milling values. An increase in microhardness was obtained, i.e., from 27 HV 0.05 to 108 HV 0.05 at the surface, while the maximum increase the microhardness occur at the depth from 0.04 mm to 0.08 mm. The changes in the physical properties of the surface layer were accompanied by an increase in the mean positron lifetime τmean. This is probably related to the increased positron annihilation in point defects. In the case of small surface deformations, the increase in microhardness was accompanied by a much lower increase in τmean, which may indicate a different course of changes in the defect structure consisting mainly in modification of the dislocation system. The dependent variables were subjected to ANOVA analysis of variance (it was one-factor analysis), and the effect of independent variables was evaluated using post-hoc tests (Tukey test).

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Surface Properties of Nickel Alloy Elements Exposed to Impulse Shot Peening with the Use of Positron Annihilation

Skoczylas

Zaleski

et al. 2021

Materials

View full text Add to dashboard Cite

show abstract

“…The refined and homogenized grain structure makes the welded area of aluminum alloy get higher toughness and tensile strength, so there is no obvious necking in the welded seam area [34]. The high plasticity and good ductility of aluminum alloys are also one of the reasons why there is no obvious necking after BT-FSW [35]. The aluminum alloy can undergo large plastic deformation when it is stressed, which makes the weld area have good ductility, which can absorb stress and extend during the tensile test, and is not prone to necking [36].…”

Section: Tensile Property Analysis Of the Weld Jointsmentioning

confidence: 99%

Study on mechanical properties of 2219 aluminum alloy bobbin tool friction stir welding

Li,

An,

Lan

et al. 2023

Mater. Res. Express

View full text Add to dashboard Cite

The Bobbin tool friction stir welding (BT-FSW) process experiment was performed on 2219 aluminum alloy with different butt clearances and misalignments. The maximum allowable clearance and misalignment amount for BT-FSW were obtained, and the weld formation, mechanical properties and microstructure under different parameters were compared and analysed. The results show that the face and back sides of the weld joint surface are perfect and there are no defect inside with the butt clearance under 2mm and the misalignment under 1.5mm. During the increase of butt clearance and misalignment, the tensile strength of the weld will be decreased gradually. In comparison, the impact of misalignment on weld strength is lower than that of the butt clearance. The tensile strength from both of them will reach more than 60% of the base metal strength. The lowest hardness value occurs in the thermal-mechanical influence zone, which is 79.1HV, about 70% of the base metal hardness value. The microstructure characteristics are similar to those of conventional friction stir welding. The macroscopic morphology of the welded joint is typical "dumbbell type", and there are many "dimples" in the tensile fracture, which is a typical ductile fracture. A large number of dispersed phase particles (Al2Cu) were found in the dimples, which is the main reason for the decrease in mechanical strength and hardness compared with the substrate.

show abstract

“…In the mechanical shot peening process, a high-speed projectile stream is injected onto the surface of the material to cause plastic deformation. Then, residual stresses that are useful to improve the fatigue performance are introduced to the surface of the part ( Nie et al, 2020 ). Laser shock peening compared to the mechanical shot peening is a non-contact process.…”

Section: Surface Modification Technologymentioning

confidence: 99%

Advanced Surface Modification for 3D-Printed Titanium Alloy Implant Interface Functionalization

Sheng

Wang

et al. 2022

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

With the development of three-dimensional (3D) printed technology, 3D printed alloy implants, especially titanium alloy, play a critical role in biomedical fields such as orthopedics and dentistry. However, untreated titanium alloy implants always possess a bioinert surface that prevents the interface osseointegration, which is necessary to perform surface modification to enhance its biological functions. In this article, we discuss the principles and processes of chemical, physical, and biological surface modification technologies on 3D printed titanium alloy implants in detail. Furthermore, the challenges on antibacterial, osteogenesis, and mechanical properties of 3D-printed titanium alloy implants by surface modification are summarized. Future research studies, including the combination of multiple modification technologies or the coordination of the structure and composition of the composite coating are also present. This review provides leading-edge functionalization strategies of the 3D printed titanium alloy implants.

show abstract

Effect of Shot Peening on Redistribution of Residual Stress Field in Friction Stir Welding of 2219 Aluminum Alloy

Cited by 22 publications

References 35 publications

Analysis of Surface Properties of Nickel Alloy Elements Exposed to Impulse Shot Peening with the Use of Positron Annihilation

Analysis of Surface Properties of Nickel Alloy Elements Exposed to Impulse Shot Peening with the Use of Positron Annihilation

Study on mechanical properties of 2219 aluminum alloy bobbin tool friction stir welding

Advanced Surface Modification for 3D-Printed Titanium Alloy Implant Interface Functionalization

Contact Info

Product

Resources

About