Effect of Scanning Routes on the Stress and Deformation of Overhang Structures Fabricated by SLM

Zhang, Xiaochuan1; Kang, Jinwu2; Rong, Yiming1,3; Wu, Pengyue4; Feng, Tao4

2019-01

10.3390/ma12010047

Materials   影响因子和分区

1996-1944

Selective laser melting (SLM) is a promising manufacturing method for the construction of complicated precision parts. However, deformation of the overhang during the fabrication process and post treatment is still a common problem. In this paper, the effect of the scanning route on the residual stress and deformation of fabricated AlSi10Mg overhang specimens by SLM was investigated. Different scanning routes for the overhang including longitudinal direction, transverse direction, and the alternation between these two scanning routes in consecutive layers were studied by experiments within this study. Numerical simulation was utilized to measure the stress of the specimens while deformation prediction was used for the different scanning routes. Both the experimental and simulated results showed that the scanning route had a substantial influence on the residual stress and deformation of the specimens. The longitudinal scanning resulted in significant upward bending deformation of the overhang as it was cut from the baseplate. However, there was less deformation for the overhangs fabricated by transverse and alternating scanning routes. A transverse scanning route is helpful for the reduction of residual stress in the longitudinal direction and the corresponding deformation.

SLM overhang scanning route residual stress deformation

SCI ; EI

英语

其他

National Science and Technology Major Project of the Ministry of Science and Technology of China[2016YFB1100703]

Materials Science

Materials Science, Multidisciplinary

WOS:000456410200047

MDPI

20185306321931

Deformation ; Fabrication ; Residual stresses

Reproduction, Copying:745.2

Web of Science

1.Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
2.Tsinghua Univ, Key Lab Adv Mat Proc Technol, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
4.Beijing E Plus 3D Tech Co Ltd, Beijing 100027, Peoples R China

Zhang, Xiaochuan,Kang, Jinwu,Rong, Yiming,et al. Effect of Scanning Routes on the Stress and Deformation of Overhang Structures Fabricated by SLM[J]. Materials,2019,12(1).

Zhang, Xiaochuan,Kang, Jinwu,Rong, Yiming,Wu, Pengyue,&Feng, Tao.(2019).Effect of Scanning Routes on the Stress and Deformation of Overhang Structures Fabricated by SLM.Materials,12(1).

Zhang, Xiaochuan,et al."Effect of Scanning Routes on the Stress and Deformation of Overhang Structures Fabricated by SLM".Materials 12.1(2019).