Effect of laser energy on the deformation behavior in microscale laser bulge forming

Zheng, Chao; Sun, Sheng; Ji, Zhong; Wang, Wei

doi:10.1016/j.apsusc.2010.08.099

Cited by 32 publications

(15 citation statements)

References 21 publications

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“…Until now, ns lasers have been widely used in laser shock microforming [5][6][7][8][9] .In fact, fs lasers with shorter pulses can induce shock waves with much higher pressure than ns lasers. For direct ablation by fs laser, strong shock wave with a peak pressure of tens to hundreds of GPa can easily be obtained [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Laser shock forming-a non-thermal laser forming method that has the advantages of non-contact, tool-free, high efficiency, and high precision-has been successfully introduced into micro manufacturing and has been reported as having great importance [5][6][7][8][9][10]. Generally, there are two categories of laser shock forming: with mold [5][6][7][8] and without mold [4,[9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Generally, there are two categories of laser shock forming: with mold [5][6][7][8] and without mold [4,[9][10]. For the former, the maximal horizontal size of the formed microstructure is determined by the mold, and the laser parameters are the main influence on the vertical size.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mold-free fs laser shock micro forming and its plastic deformation mechanism

Feng

Lian

et al. 2015

Optics and Lasers in Engineering

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mold-free fs laser shock micro forming and its plastic deformation mechanism

Feng

Lian

et al. 2015

Optics and Lasers in Engineering

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“…The mechanical properties of workpiece after LSF had been extensively investigated, 1,2,[5][6][7] demonstrating that the surface properties are greatly improved, including surface hardness and residual stress. For instance, Cheng et al 1 systematically characterized the microstructural and mechanical properties of metal foils after micro-scale laser dynamic forming.…”

Section: Introductionmentioning

confidence: 99%

Formation of nanostructure and nano-hardness characterization on the meso-scale workpiece by a novel laser indirect shock forming method

Liu

Wang

et al. 2013

Review of Scientific Instruments

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The meso-scale workpiece with greatly enhanced mechanical properties is potential to be widely used in the electronics productions and micro-electro mechanical systems. In this study, it demonstrates that the meso-scale cup-shape workpiece with good geometry can be obtained by a novel laser indirect shock forming method. After the forming process, the mechanical properties and microstructures of the formed workpiece were characterized. By transmission electron microscope observation, it was found that a mixed refined microstructure consisting of nano-scale twins embedded in nano-sized grains was produced at the center of the formed sample. Formation of these nanograins could be mainly attributed to two mechanisms: twin-twin intersections and twin∕matrix lamellae fragmentation. By nanoindentation tests, it reveals that the hardness of the sample has increased greatly after laser shock forming and the hardness increases with the laser energy. The elevated hardness originates from a considerable number of nano-scale twins and nanograins, which possess a pretty high strength due to the significant effects of grain boundary strengthening and twin boundary strengthening.

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“…Consequently, the thickness at the bottom is uniform while the thickness of side wall changes. In 2010, Zheng et al [4] investigated the micro-scale laser bulge forming process using both numerical and experimental methods. In their work, the effect of laser energy on microformability of pure copper was discussed in detail.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of Cold Bulge Forming of Titanium Alloy Ti55

Tabatabaei¹,

Safari²,

Esfahani³

et al. 2013

WJM

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In this paper, cold bulge forming of titanium alloy Ti55 was investigated. This process was done successfully and titanium alloy Ti55 was formed completely. Also, in the numerical work, this process has been investigated using Abaqus/ Explicit code. The results show that there is a good agreement between experimental and numerical results. Mechanical properties of Titanium alloy Ti55 have been investigated before and after bulge forming. The results show that mechanical properties of titanium alloy Ti55 have been improved during bulge forming. Also, hardness, and thickness variation tests of sheet metal before and after bulge forming were performed and the same results to mechanical properties were obtained.

show abstract

Effect of laser energy on the deformation behavior in microscale laser bulge forming

Cited by 32 publications

References 21 publications

Mold-free fs laser shock micro forming and its plastic deformation mechanism

Mold-free fs laser shock micro forming and its plastic deformation mechanism

Formation of nanostructure and nano-hardness characterization on the meso-scale workpiece by a novel laser indirect shock forming method

Experimental and Numerical Investigation of Cold Bulge Forming of Titanium Alloy Ti55

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