Finite Element Analysis of Surface Integrity in Deep Ball-Burnishing of a Biodegradable AZ31B Mg Alloy

Uddin, Md. Sharif; Hall, Colin; Hooper, Ryan J.; Charrault, Eric; Murphy, Peter; Santos, Vincent

doi:10.3390/met8020136

Cited by 25 publications

(13 citation statements)

References 24 publications

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“…The FE approach is used considerably less-only 10% of the published studies use an FE method (FEM). It should be noted that the FEM has been used more extensively to explore the processes involved in rolling contact, i.e., roller burnishing [4][5][6][7][8][9][10][11][12][13][14][15] and deep rolling [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] (including the special case of deep rolling-low plasticity burnishing [31][32][33][34][35][36][37]), than for SB study [38][39][40][41][42][43][44][45][46]. When it comes to SB, the case in which the deforming element is a diamond is most often simulated [38,[40][41][42]…”

Section: Literary Surveymentioning

confidence: 99%

Improvement in fatigue strength of 41Cr4 steel through slide diamond burnishing

Maximov

Duncheva

Anchev

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Slide burnishing (SB) is a static mechanical surface treatment based on the severe plastic deformation of the surface for which the contact between the deforming element and the surface being treated is sliding friction. SB improves the surface integrity of metal structural and machine components dramatically. This paper is devoted to improving the fatigue strength of 41Cr4 steel hourglass-shaped specimens subjected to SB with a spherical-ended deforming diamond via different combinations of basic governing parameters. Since the residual compressive stresses introduced play a significant role for the fatigue behavior of the burnished components, a comprehensive parametric study of the SB process was conducted using fully coupled thermal-stress finite element (FE) simulations. The FE model's adequacy was proven via comparison of the FE results for the residual stresses with X-ray diffraction measurements. The results obtained show that the diamond radius and the burnishing force have the strongest effects on the residual stresses, which, in turn, have a significant influence on the fatigue strength, respectively, fatigue life. An extensive experimental investigation of the effect of the selected SB basic parameters on the fatigue limit of the slide burnished specimens was carried out using Locatti's method. The latter is based on the Palmgren-Miner linear damage hypothesis, which is a particular case of a general cumulative damage theory. A planned experiment was carried out, with the governing factors changed among four levels. Regression analysis of the experimental results was carried out, and a model for predicting the fatigue limit was obtained. Based on the model obtained, a one-purpose optimization was carried out using a genetic algorithm. By means of the optimal basic parameters, the fatigue limit of the processed specimens was increased by 22.7%-from 440 to 540 MPa. The fatigue life increased more than 100 times over after SB with the optimal basic parameters.

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Section: Literary Surveymentioning

confidence: 99%

Improvement in fatigue strength of 41Cr4 steel through slide diamond burnishing

Maximov

Duncheva

Anchev

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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“…The burnishing process is a surface plastic working technique that is known by researchers and scientists, but first of all research is carried out on single-layer materials [ 17 , 18 , 19 , 20 , 21 , 22 , 27 , 28 , 29 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 ] and not for coated materials. Therefore, and based on our own research, an experimental analysis of the burnishing of products with the applied alloy and composite coatings was undertaken.…”

Section: Experimental Research Of Plastic Workingmentioning

confidence: 99%

The Experimental and Numerical Research for Plastic Working of Nickel Matrix Composite Coatings

et al. 2020

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In the machine, metallurgical, and shipbuilding industries, steel products with alloy and composite coatings based on nickel may be used. It is expedient to improve the physicochemical properties of the surface layer of products as they have a significant roughness value after thermal spraying. It is therefore important to finish the layers applied by flame spraying, where machining is used for this purpose. However, it causes a loss of coating material, which is quite expensive. Therefore, in order to reduce costs and improve the quality of the surface layer, the finishing treatment of nickel-based coatings by means of plastic working is used. Two types of plastic working were proposed: rolling and burnishing. Numerical and experimental tests of the plastic processing of alloy coatings were carried out. The roughness of the coatings after rolling decreased to 1/25 and 30% strengthening of the alloy coating matrix was determined. After burnishing, roughness was reduced to 1/12 and the alloy coatings were strengthened by 25%. Plastic working by rolling and burnishing has a beneficial effect on the surface quality of the workpiece, not only by significantly improving the roughness, but also by increasing the strength properties of the surface layers.

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“…The data for the highly stressed part is relatively scattered, indicating that the fatigue life of the AISI 4340 steel after composite surface modification is not as sensitive to a change in the stress amplitude as the polished matrix. 6 4.0x10 6 6.0x10 6 8.0x10 6 1.0x10 7 1.2x10 7…”

Section: Fatigue Limit Curve and S-n Curvementioning

confidence: 99%

“…As the strength of the material increases, the value of ρ decreases and the value of q increases. Equation (6) shows that the larger the surface roughness is, the larger the stress concentration factor; that is, the larger the effective stress concentration factor is, the easier the fatigue crack initiation, and the lower the fatigue life. In contrast, crack initiation is difficult, so the fatigue life increases.…”

Section: Effect Of Roughness On Fatigue Lifementioning

confidence: 99%

“…Dixit et al [4] put forward modeling requirements for material surface state and surface quality from the perspective of material design and modeling, reflecting the importance of material surface state and quality material modeling. However, Krahmer et al [5] takes the surface integrity and surface state as the consideration point, and abrasive water jet, wire electrodischarge machining, laser to replace the traditional milling processing of tensile samples, shortening the processing time and having great industrial value in industrial applications, In practical application literature [6][7][8][9], ball-burnishing means can be adopted to significantly improve the surface quality of materials, so as to improve the corrosion resistance and wear resistance of materials and reduce the wear ratio of materials. In terms of material fatigue, Nie et al [10] the surface state of titanium alloy after polishing can affect crack initiation in the fatigue process, thus affecting the fatigue performance of the material.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Surface Integrity and High Cycle Fatigue Performance of AISI 4340 Steel after Composite Surface Modification

Liang

2019

Metals

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In the field of materials science, the fabrication of a material with severe surface plastic deformation and a good surface state is an issue encountered in the development of counterbalanced gradient materials. For this paper, AISI 4340 steel was first processed with abrasive water jet peening (AWJP) and then with ultrasonic surface rolling (USRE) to obtain a good surface state while maintaining large plastic deformation. The AISI 4340 steel composite surface was therefore modified, and the surface integrity and cycle fatigue performance were analyzed. The results show that the plastic deformation layer of the modified composite surface of the 4340 steel was 310 µm from the surface of the sample, the grain size 40 µm from the surface layer was refined to 70 nm, and the maximum surface roughness Ra is 0.06. The fatigue limit of the modified composite surfaces obtained by the tensile fatigue test was 595.7 MPa, which was 85.7 MPa higher than the 510 MPa fatigue limit of the unmodified matrix, indicating that the method of composite surface modification can produce a deep deformation layer while maintaining good surface conditions. The results show that work hardening caused by a composite surface treatment is the most important factor for improving the fatigue performance of materials.

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Finite Element Analysis of Surface Integrity in Deep Ball-Burnishing of a Biodegradable AZ31B Mg Alloy

Cited by 25 publications

References 24 publications

Improvement in fatigue strength of 41Cr4 steel through slide diamond burnishing

Improvement in fatigue strength of 41Cr4 steel through slide diamond burnishing

The Experimental and Numerical Research for Plastic Working of Nickel Matrix Composite Coatings

Study of the Surface Integrity and High Cycle Fatigue Performance of AISI 4340 Steel after Composite Surface Modification

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