Numerical simulation of AZ31B magnesium alloy shocked with femtosecond laser

被引：0

作者：

Yao, Hong-Bing ^{[1
]}

Yu, Wen-Long ^{[1
]}

Yang, Zhao ^{[2
]}

Li, Qiang ^{[2
]}

Gao, Yuan ^{[1
]}

Li, Ya-Ru ^{[1
]}

Ni, Wen-Qiang ^{[1
]}

机构：

[1] School of Mechanical Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu

[2] Lianyungang Normal College, Lianyungang, 222006, Jiangsu

来源：

Guangzi Xuebao/Acta Photonica Sinica | 2015年 / 44卷 / 04期

关键词：

Characteristics; Femtosecond laser; Finite element method; Laser technique; Magnesium alloy; Sheet forming;

D O I：

10.3788/gzxb20154404.0414002

中图分类号：

学科分类号：

摘要：

The laser shocking processing of AZ31B magnesium alloy sheet by the femtosecond laser pulse is numerically simulated with the finite element method. In the simulation, the effect of laser shock processing on the deformation process of AZ31B magnesium alloy is studied, the distributions of characteristics within the material, such as displacement, stress and strain, are analyzed, and the dynamic variation process of velocity and strain rate is discussed. The results indicate that the plastic deformation of magnesium alloy sheet shocked by single femtosecond laser pulse led to a micrometer-scale pit on the material surface. The maximum displacement at the center of the pit is 34 μm. And the maximum speed reaches 390m/s. Stress and strain of material aremainly distributed near the central dot and the edge of laser shocked region. The maximum stress of the central dot is 955 MPa, and the maximum strain rate reaches 1. 8×106 s-1. The results show that the numerical simulation of the laser shocking processing of AZ31B magnesium alloy sheet by the femtosecond laser pulse is able to provide the numerical references for analysis of the variation laws of materials by femtosecond laser loading. ©, 2015, Chinese Optical Society. All right reserved.

引用

页数：6

共 14 条

[1]

Iordachescu M., Valiente A., Caballero L., Et al., Laser shock processing influence on local properties and overall tensile behavior of friction stir welded joints, Surface and Coatings Technology, 206, 8, pp. 2422-2429, (2012)

[2]

Ganesh P., Sundar R., Kumar H., Et al., Studies on fatigue life enhancement of pre-fatigued spring steel specimens using laser shock peening, Materials & Design, 54, pp. 734-741, (2014)

[3]

Dachraoui H., Husinsky W., Fast electronic and thermal processes in femtosecond laser ablation of Au, Applied Physics Letters, 89, 10, pp. 104102.1-104102.3, (2006)

[4]

Muhammad N., Whitehead D., Boor A., Comparison of dry and wet fibre laser profile cutting of thin 313L stainless steel tubes for medical device applications, Journal of Materials Processing Technology, 210, pp. 2261-2267, (2010)

[5]

Sagisaka Y., Kamiya M., Matsuda M., Et al., Thin-sheet-metal bending by laser peen forming with femtosecond laser, Journal of Materials Processing Technology, 210, 15, pp. 2304-2309, (2010)

[6]

Nakano H., Miyauti S., Butani N., Et al., Femtosecond laser peening of stainless steel, Laser Micro/Nanoeng, 4, 1, pp. 35-38, (2009)

[7]

Shadanbaz S., Dias G.J., Calcium phosphate coatings on magnesium alloys for biomedical applications: a review, Acta Biomaterialia, 8, 1, pp. 20-30, (2012)

[8]

Sathiyanarayanan S., Azim S.S., Venkatachari G., Corrosion resistant properties of polyaniline-acrylic coating on magnesium alloy, Applied Surface Science, 253, 4, pp. 2113-2117, (2006)

[9]

Anisimov S.I., Kapeliovich B.L., Perel'man T.L., Electron emission from metal surfaces exposed to ultrashort laser pulses, Zh Eksp Teor Fiz, 66, 776, pp. 375-377, (1974)

[10]

Yang Q., Du G.-Q., Chen F., Et al., Ultrafast thermal relaxation characteristics in gold film excited by shape femtosecond laser pulses, Chinese Journal of Lasers, 41, 5, (2014)

← 1 2 →