Fiber laser selective melting of 316L stainless steel powder

被引：2

作者：

Wang D. ^{[1
]}

Yang Y. ^{[1
]}

He X. ^{[1
]}

Wu W. ^{[1
]}

Su X. ^{[1
]}

Wang H. ^{[2
]}

机构：

[1] College of Mechanical and Automobile Engineering, South China University of Technology

[2] Guangzhou Riton Laser Co Ltd

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2010年 / 22卷 / 08期

关键词：

Energy density; Micro-structure; Rapid manufacturing; Selective laser melting; Surface profile;

D O I：

10.3788/HPLPB20102208.1881

中图分类号：

学科分类号：

摘要：

A selective laser melting(SLM) system equipped with fiber laser was designed to study the technical parameters, energy density, relative density, surface profile and characteristics of micro structures of 316L stainless steel powder. Results show that the scan speed has most significant effect on fabrication results, and the relative density increases with the energy density as an appropriate operational technical factor in SLM process. Surface profiles are determined by the ratio between laser power and scan speed. The relations among energy input, the melting and solidification way of the powder, the ratio between laser power and scan speed, relative density and surface profiles are deeply discussed. The micro-structure of SLM part's fused line that between adjacent tracks or interlayer is in arc shape and metallurgical bonded. The micro-structures are mainly composed of columnar crystal and equiaxed grains, the fusion line inner layer is surrounded by columnar crystal, and near the fusion line interlayer is fine equiaxed grains, and the grains size can be as small as about 1 μm.

引用

页码：1881 / 1886

页数：5

共 13 条

[1]

Santos E.S., Shiomi M., Osakada K., Et al., Rapid manufacturing of metal components by laser forming, International Journal of Machine Tools and Manufacture, 46, 12-13, pp. 1459-1468, (2006)

[2]

Yang J., Shi Y., Shen Q., Et al., Selective laser sintering of HIPs and investment casting technology, Journal of Materials Processing Technology, 209, 4, pp. 1901-1908, (2009)

[3]

Yadroitsev I., Shishkovsky I., Bertrand P., Et al., Manufacturing of fine-structured 3D porous filter elements by selective laser melting, Applied Surface Science, 255, 10, pp. 5523-5527, (2009)

[4]

Abe F., Osakada K., Shiomi M., Et al., The manufacturing of hard tools from metallic powders by selective laser melting, Joural of Materials Processing Technology, 111, 1-3, pp. 210-213, (2001)

[5]

Kruth J.P., Froyen L., Van Vaerenbergh J., Et al., Selective laser melting of iron-based powder, Journal of Materials Processing Technology, 149, 1-3, pp. 616-622, (2004)

[6]

Liao J., Meng H., Wang H., Et al., Investigation and application of fiber laser precision cutting system, Chinese Journal of Lasers, 34, 1, pp. 133-136, (2007)

[7]

Rehme O., Emmelmann C., Reproducibility for properties of selective laser melting products, Proceedings of the Third International WLT Conference on Lasers in Manufacturing, pp. 1-6, (2005)

[8]

Tolochko N.K., Mozzharov S.E., Yadroitsev I.A., Et al., Balling processes during selective laser treatment of powders, Rapid Prototyping Journal, 10, 2, pp. 78-87, (2004)

[9]

Yadroitsev I., Bertrand P., Smurov I., Parametric analysis of the selective laser melting process, Applied Surface Science, 253, 19, pp. 8064-8065, (2007)

[10]

SanZ-Guerrero J., Ramos-GreZ J., Effect of total applied energy density on the densification of copper-titanium slabs produced by a DMLF process, Journal of Materials Processing Technology, 202, pp. 389-346, (2008)

← 1 2 →