Effects of Pulsed Laser on Surface Quality and Deformation of Selective Laser Melted Ti6Al4V Titanium Alloy

被引：2

作者：

Guo Qingfeng ^{[1
,2
]}

Zhang Zheng ^{[1
]}

Huang Lijie ^{[1
]}

Lin Wenxiong ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Optoelect Mat Chem & Phys, Fuzhou 350002, Fujian, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

LASER & OPTOELECTRONICS PROGRESS | 2020年 / 57卷 / 21期

关键词：

lasers and laser optics; laser material processing; selective laser melting process; pulsed laser; relative density; surface roughness; deformation; MECHANICAL-PROPERTIES; BEHAVIOR; MICROSTRUCTURE; POWDER;

D O I：

10.3788/LOP57.211404

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, using pulsed laser and continuous laser as the heat source of the selective laser melting process, the effects of different laser average powers and pulse duty cycles on the density, surface roughness, and microstructure of Ti-6, Al-4 V titanium alloy samples arc studied. Experimental results show that compared with continuous laser, the use of pulsed laser with a duty cycle of 60%-70% can significantly improve the surface quality of the part. The surface roughness is as low as 3. 6 mu m, and the sample grain width is reduced from (1.14 +/- 0.23) mu m to (0.85 +/- 0.18) mu m, and can effectively eliminate the warpage caused by the accumulation of thermal stress during continuous laser processing.

引用

页数：8

共 26 条

[1]

An C, 2018, LASER J, V39, P68

[2]

[安超 An Chao], 2018, [应用激光, Applied Laser], V38, P730

[3] Effect of Laser Power for Metal Selective Laser Melting on Morphology of 316L Stainless Steel Molten Pool and Residual Stress [J].

Bian Peiying ;

Yin Enhuai .

LASER & OPTOELECTRONICS PROGRESS, 2020, 57 (01)

[4]

[程巨强 Cheng Juqiang], 2016, [热加工工艺, Hot Working Technology], V45, P5

[5] Tailoring surface quality through mass and momentum transfer modeling using a volume of fluid method in selective laser melting of TiC/AlSi10Mg powder [J].

Dai, Donghua ;

Gu, Dongdong .

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2015, 88 :95-107

[6] From pulsed to continuous wave emission in SLM with contemporary fiber laser sources: effect of temporal and spatial pulse overlap in part quality [J].

Demir, Ali Gokhan ;

Colombo, Paolo ;

Previtali, Barbara .

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2017, 91 (5-8) :2701-2714

[7] Effect of Scanning Strategy on Forming Precision of Titanium Alloy by Selective Laser Melting [J].

Ge Yanan ;

Wu Meiping ;

Mao Yuyi ;

Han Jitai .

LASER & OPTOELECTRONICS PROGRESS, 2018, 55 (09)

[8]

[胡玉 Hu Yu], 2014, [应用激光, Applied Laser], V34, P427

[9] Grain refinement and excellent mechanical properties of a Ti-based alloy via laser melting and subsequent low temperature annealing [J].

Jiang, X. J. ;

Chen, G. Y. ;

Men, X. L. ;

Han, R. H. ;

Zhao, P. ;

Dong, X. L. ;

Liu, R. P. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 737 :182-187

[10] Laser powder-bed fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones [J].

Khairallah, Saad A. ;

Anderson, Andrew T. ;

Rubenchik, Alexander ;

King, Wayne E. .

ACTA MATERIALIA, 2016, 108 :36-45

← 1 2 3 →