Anisotropy of Body-Centered-Cubic Porous Structures by Selective Laser Melting

Fig. 6. Forming quality comparison of X/Y-axial microrods and body-centered-cubic porous structures under different process parameters. (a) Optimal process parameters; (b) non-optimal process parameters

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Fig. 7. Mechanical properties of body-centered-cubic porous structure versus microrod diameter. (a) Compressive strength; (b) elastic modulus

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Fig. 8. Quality of large size microrod under optimal linear energy density. (a) Z-axis microrod; (b) X/Y-axis microrod

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Fig. 9. Anisotropy degree of body-centered-cubic porous structure with linear energy density and microrod diameter. (a) Linear energy density; (b) microrod diameter

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Table 1. Experimental parameters for body-centered-cubic porous structure

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Table 1. Experimental parameters for body-centered-cubic porous structure

Experimental group number	Linear energy density /(J·mm^-1)	Microrod diameter /mm	Other parameter
1	0.08, 0.10, 0.12, 0.14	0.4	Hatch spacing: 0.08 mmHatch offset: 0.05 mmLayer thickness: 0.04 mmScanning strategy: X-Y(Orthogonal scanning path)
2	0.140.120.110.100.10		0.30.40.50.60.7

Table 2. Compressive properties of body-centered-cubic porous structure under different linear energy densities

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Table 2. Compressive properties of body-centered-cubic porous structure under different linear energy densities

Linear energydensity /(J·mm^-1)	Z-axis compressivestrength /MPa	X/Y-axis compressivestrength /MPa	Z-axis elasticmodulus /GPa	X/Y-axis elasticmodulus /GPa
0.08	38.35, 35.40,39.55, 38.18	30.03, 31.92,29.06, 25.99	0.75, 0.72,0.75, 0.77	0.67, 0.71,0.65, 0.68
0.10	52.11, 50.49,57.13, 52.06	39.50, 37.35,42.58, 37.97	0.91, 0.93,0.89, 0.91	0.87, 0.82,0.85, 0.81
0.12	59.73, 62.86,60.02, 59.11	56.92, 58.44,56.53, 55.91	0.93, 0.95,0.97, 0.94	0.92, 0.93,0.93, 0.90
0.14	56.44, 56.12,52.28, 59.53	39.83, 41.45,36.33, 36.02	0.91, 0.95,0.96, 0.93	0.74, 0.71,0.76, 0.73

Table 3. Compressive properties of body-centered-cubic porous structure under different microrod diameters

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Table 3. Compressive properties of body-centered-cubic porous structure under different microrod diameters

Microroddiameter /mm	Z-axis compressivestrength /MPa	X/Y-axis compressivestrength /MPa	Z-axis elasticmodulus /GPa	X/Y-axis elasticmodulus /GPa
0.3	31.95, 32.88,33.23, 32.50	30.43, 30.94,29.32, 32.88	0.64, 0.63,0.67, 0.62	0.61, 0.61,0.63, 0.64
0.4	59.73, 62.86,60.02, 59.11	56.92, 58.44,56.53, 55.91	0.93, 0.95,0.97, 0.94	0.92, 0.93,0.93, 0.90
0.5	69.95, 70.11,72.30, 69.67	65.01, 66.40,62.97, 64.88	1.03, 1.05,0.99, 1.05	0.95, 0.99,0.97, 0.93
0.6	81.96, 82.90,83.10, 86.79	76.27, 74.01,78.97, 75.02	1.12, 1.07,1.08, 1.06	0.96, 1.01,0.94, 0.95
0.7	90.69, 93.77,95.82, 95.09	85.72, 88.01,85.66, 84.38	1.28, 1.22,1.21, 1.27	1.05, 1.10,1.07, 1.03

Table 4. Anisotropy degrees of body-centered-cubic porous structure under different linear energy densities
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Table 4. Anisotropy degrees of body-centered-cubic porous structure under different linear energy densities
Linear energydensity /(J·mm^-1) Anisotropy degree ofcompressive strength /% Anisotropy degree ofelastic modulus /%
0.08 22.76 9.33
0.10 25.68 7.69
0.12 5.80 3.16
0.14 31.52 21.28

Table 5. Anisotropy degrees of body-centered-cubic porous structures under different microrod diameters
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Table 5. Anisotropy degrees of body-centered-cubic porous structures under different microrod diameters
Microrod diameter /mm Anisotropy degree of compressive strength /% Anisotropy degree of elastic modulus /%
0.3 5.36 3.13
0.4 5.76 3.16
0.5 8.07 6.80
0.6 9.11 10.19
0.7 8.42 15.20

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Zhang Bo, Cao Yi, Wang Ling, Li Dichen, Kang Jianfeng, Sun Changning, Yang Dong. Anisotropy of Body-Centered-Cubic Porous Structures by Selective Laser Melting[J]. Chinese Journal of Lasers, 2017, 44(8): 802005

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Paper Information

Category: laser manufacturing

Received: Mar. 1, 2017

Accepted: --

Published Online: Sep. 13, 2017

The Author Email:

DOI:10.3788/CJL201744.0802005

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Experimental parameters for body-centered-cubic porous structure

Table 1. Experimental parameters for body-centered-cubic porous structure

Table 2. Compressive properties of body-centered-cubic porous structure under different linear energy densities

Table 2. Compressive properties of body-centered-cubic porous structure under different linear energy densities

Table 3. Compressive properties of body-centered-cubic porous structure under different microrod diameters

Table 3. Compressive properties of body-centered-cubic porous structure under different microrod diameters

Table 4. Anisotropy degrees of body-centered-cubic porous structure under different linear energy densities

Table 4. Anisotropy degrees of body-centered-cubic porous structure under different linear energy densities

Table 5. Anisotropy degrees of body-centered-cubic porous structures under different microrod diameters

Table 5. Anisotropy degrees of body-centered-cubic porous structures under different microrod diameters