Comparison of the effects of submerged laser peening, cavitation peening and shot peening on the improvement of the fatigue strength of magnesium alloy AZ31

Soyama, Hitoshi; Kuji, Chieko; Liao, Yiliang

doi:10.1016/j.jma.2023.04.004

Cited by 24 publications

(6 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the roughness values obtained in this study for the AZ31 magnesium alloy are lower than those obtained for the shot-peened samples in [44]. Favorable surface roughness values (lower than those reported in [45]) may contribute to improved fatigue resistance and higher corrosion resistance [24]. The shot peening process analyzed in this work is classi ed as a dynamic burnishing method.…”

Section: Discussionmentioning

confidence: 61%

Study on selected properties of the surface layer of magnesium alloys after impulse shot peening

Skoczylas,

Zaleski,

Ciecieląg

et al. 2024

Preprint

View full text Add to dashboard Cite

Shot peening is a commonly used method of finishing machine elements in the manufacturing process. One variation of shot peening is the impulse shot peening. This paper presents the influence of impulse shot peening technological conditions on the surface roughness (parameters Ra and Rt) and topography, microhardness. The FEM was used to determine the S11 stresses. In the experiment and simulation tests, AZ31 and AZ91HP magnesium alloy samples were used. Variable parameters in the impulse shot peening process were: impact energy E: 15 ÷ 185 mJ, ball diameter d: 3 ÷ 15 mm and impact density j: 3 ÷ 44 mm− 2. As a result of the tests carried out, it was found that after impulse shot peening, the surface topography is change, microirregularities are flattened, numerous depressions are formed, which can be potential lubrication pockets. The 2D surface roughness parameters for most impulse shot peening conditions are lower than for the pre-machining. The roughness parameters for magnesium alloy AZ91HP are lower than for AZ31. This is most likely due to the lower elongation A. The microhardness after impulse shot peening increased by 20 HV to 87 HV. As a result of FEM of the impulse shot peening, compressive stresses S11 were created in the surface layer. The depth of occurrence of S11 stresses is from 1.5 to 3.5 mm, and their value for the AZ91HP magnesium alloy samples are 10–25% lower than for the AZ31 alloy samples. The most favorable results of the tested properties of the surface layer were obtained for E = 100 mJ, d = 10 mm, j = 11 mm− 2.The abstract serves both as a general introduction to the topic and as a brief, non-technical summary of the main results and their implications.

show abstract

Section: Discussionmentioning

confidence: 61%

Study on selected properties of the surface layer of magnesium alloys after impulse shot peening

Skoczylas,

Zaleski,

Ciecieląg

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…In the case of magnesium alloy, the fatigue strength of laser cavitation peening is better than cavitation peening conducted via a cavitating jet [36]. It was reported that the suitable laser pulse density of improvement of the bending fatigue strength by laser cavitation peening was 4 pulse/mm 2 for stainless steel SUS316L [21], 5 pulse/mm 2 for additively manufactured (AM) titanium alloy Ti6Al4V [37], and 14 pulse/mm 2 for magnesium alloy AZ31 [36]. The Vickers hardness of these tested materials without peening were 168 ± 3 for SUS316L [21], 408 ± 11 for AM Ti6Al4V [38] and 53.0 ± 0.7 for AZ31 [36].…”

Section: Introductionmentioning

confidence: 97%

“…In another way to conduct cavitation peening, a cavitation is generated by a submerged pulsed laser, i.e., laser cavitation peening [33][34][35] (see Figure 1b). In the case of magnesium alloy, the fatigue strength of laser cavitation peening is better than cavitation peening conducted via a cavitating jet [36]. It was reported that the suitable laser pulse density of improvement of the bending fatigue strength by laser cavitation peening was 4 pulse/mm 2 for stainless steel SUS316L [21], 5 pulse/mm 2 for additively manufactured (AM) titanium alloy Ti6Al4V [37], and 14 pulse/mm 2 for magnesium alloy AZ31 [36].…”

Section: Introductionmentioning

confidence: 99%

“…It was reported that the suitable laser pulse density of improvement of the bending fatigue strength by laser cavitation peening was 4 pulse/mm 2 for stainless steel SUS316L [21], 5 pulse/mm 2 for additively manufactured (AM) titanium alloy Ti6Al4V [37], and 14 pulse/mm 2 for magnesium alloy AZ31 [36]. The Vickers hardness of these tested materials without peening were 168 ± 3 for SUS316L [21], 408 ± 11 for AM Ti6Al4V [38] and 53.0 ± 0.7 for AZ31 [36]. At laser cavitation peening, the impact is proportional to the volume of the bubble considering threshold level, and the threshold level of target material increases with Vickers hardness [34].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of a Cavitation Generator Mimicking Pistol Shrimp

Soyama,

Tanaka,

Takiguchi

et al. 2024

Biomimetics

Self Cite

View full text Add to dashboard Cite

Pistol shrimp generate cavitation bubbles. Cavitation impacts due to bubble collapses are harmful phenomena, as they cause severe damage to hydraulic machinery such as pumps and valves. However, cavitation impacts can be utilized for mechanical surface treatment to improve the fatigue strength of metallic materials, which is called “cavitation peening”. Through conventional cavitation peening, cavitation is generated by a submerged water jet, i.e., a cavitating jet or a pulsed laser. The fatigue strength of magnesium alloy when treated by the pulsed laser is larger than that of the jet. In order to drastically increase the processing efficiency of cavitation peening, the mechanism of pistol shrimp (specifically when used to create a cavitation bubble), i.e., Alpheus randalli, was quantitatively investigated. It was found that a pulsed water jet generates a cavitation bubble when a shrimp snaps its claws. Furthermore, two types of cavitation generators were developed, namely, one that uses a pulsed laser and one that uses a piezo actuator, and this was achieved by mimicking a pistol shrimp. The generation of cavitation bubbles was demonstrated by using both types of cavitation generators: the pulsed laser and the piezo actuator.

show abstract

“…The urgent task of our time is to increase the service life and hardening of metal parts and components by various methods. The most common of these are surface shot blasting, rolling, equal-channel angular pressing, laser peening [1][2][3][4][5], etc. In addition to these traditional methods of surface treatment methods, laser shock peening (LSP) has a number of advantages: the absence of global thermal effects, ability to locally treat parts with complex geometry [6][7][8][9], short processing time, lower surface roughness [10], deeper residual stresses [11].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Laser Shock Peening on the Thermophysical Parameters of Metals

Sabirov,

Iziumova,

Vshivkov

et al. 2023

Rev. Adv. Mater. Technol.

View full text Add to dashboard Cite

Using Ti64 titanium alloy as an example, the article discusses the change in the thermophysical parameters of metals under the influence of a hardening method such as laser shock peening the essence of which is the formation of residual compressive stresses in the material under the influence of high-intensity laser radiation. The experiments are carried out with plates made of Ti64 titanium alloy, which is one of the most common construction materials in modern industry. One of the plates is a control specimen, and the surface of the second one is subjected to laser processing. The thermophysical parameters of specimens are determined using the infrared thermography method, the advantage of which is the ability to simultaneously measure two coefficients, thermal diffusivity and thermal conductivity of an explored material. The specimen is heated by the laser for some time, which can be perceived as a point heat source on the surface of the plate. Simultaneously with the laser action, the surface temperature of the specimen is recorded by an infrared camera. The thermophysical coefficients are determined as optimization parameters when matching experimental data with the analytical solution of the heat equation for a geometry similar to the experimental setup.

show abstract

Comparison of the effects of submerged laser peening, cavitation peening and shot peening on the improvement of the fatigue strength of magnesium alloy AZ31

Cited by 24 publications

References 58 publications

Study on selected properties of the surface layer of magnesium alloys after impulse shot peening

Study on selected properties of the surface layer of magnesium alloys after impulse shot peening

Development of a Cavitation Generator Mimicking Pistol Shrimp

The Effect of Laser Shock Peening on the Thermophysical Parameters of Metals

Contact Info

Product

Resources

About