An investigation into melting modes in selective laser melting of Inconel 625 powder: single track geometry and porosity

2021 ◽  
Author(s):  
Subin Shrestha ◽  
Kevin Chou
Keyword(s):  
Selective Laser Melting ◽  
Inconel 625 ◽  
Single Track ◽  
Laser Melting ◽  
Track Geometry

Track evolution and surface characteristics of selective laser melting Ti6Al4V

2018 ◽  
Vol 24 (9) ◽  
pp. 1554-1562 ◽  
Author(s):  
Luo Zhang ◽  
Haihong Zhu ◽  
Jiahe Liu ◽  
Xiaoyan Zeng
Keyword(s):  
Surface Morphology ◽  
Selective Laser Melting ◽  
Surface Characteristics ◽  
Scanning Speed ◽  
Bulk Sample ◽  
Three Dimension ◽  
Single Track ◽  
Heat Accumulation ◽  
Laser Melting ◽  
Content Type

Purpose The purpose of this paper is to investigate the track evolution and surface characteristics of selective laser melting Ti6Al4V. Design/methodology/approach In the present paper, Ti6Al4V single-track, multi-track and bulk sample were formed at different scanning speed by selective laser melting (SLM). Then, the surface morphology, three-dimension profile and surface roughness were evaluated. The width of the single and multi-track was measured and compared. Findings The results showed that the heat accumulation played a great role on the evolution of tracks and surface characteristics from single-track to multi-track and to bulk. The surface morphology of the subsequent tracks became more regular when the single-track was irregular at the same high scanning speed. The width of last track Wn was always larger than that of the first track W1. The Ra of the top of the bulk increased with the increase of the scanning speed, this trend was as same as the Ra of the single-track, but the trend of Ra of the side was opposite. Originality/value The effect of heat accumulation on the track evolution and surface characteristics is obtained. The results can help to derive a smooth surface with a regular and continuous track in SLM.

Forming and defect analysis for single track scanning in selective laser melting of Ti6Al4V

2018 ◽  
Vol 124 (10) ◽  
Author(s):  
Yu Xiang ◽  
Shuzhe Zhang ◽  
Zhengying Wei ◽  
Junfeng Li ◽  
Pei Wei ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Defect Analysis ◽  
Single Track ◽  
Laser Melting
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