Research on track overlapping during Selective Laser Melting of powders

Su, Xing; Yang, Yongqiang

doi:10.1016/j.jmatprotec.2012.05.012

Cited by 110 publications

(54 citation statements)

References 13 publications

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“…Several of these elliptical-shaped grains with same orientation form one cell separated by primary grain boundaries. A similar behavior can also be seen in other materials like AlSi10Mg, Inconel 939 or 316 L [21][22][23][24]. The grain growth occurs in a wavelike fashion and the boundary of the elliptical grains are rich in titanium (Figure 4), which is similar to the cellular kind of microstructure observed in Al-12Si alloys, where the cellular boundaries are rich in Si [15].…”

Section: Microstructuresupporting

confidence: 74%

Selective Laser Melting of Ti-45Nb Alloy

Schwab

Prashanth

Löber

et al. 2015

Metals

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Ti-45Nb is one of the potential alloys that can be applied for biomedical applications as implants due to its low Young's modulus. Ti-45Nb (wt.%) gas atomized powders were used to produce bulk samples by selective laser melting with three different parameter sets (energy inputs). A β-phase microstructure consisting of elliptical grains with an enriched edge of titanium was observed by scanning electron microscopy and X-ray diffraction studies. The mechanical properties of these samples were evaluated using hardness and compression tests, which suggested that the strength of the samples increases with increasing energy input within the range considered.

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Section: Microstructuresupporting

confidence: 74%

Selective Laser Melting of Ti-45Nb Alloy

Schwab

Prashanth

Löber

et al. 2015

Metals

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“…Porosity, residual stresses, and cracking as a consequence of hot shortness, and poor surface finish are among the problems associated with the SLS/SLM process as a result of the generation of uneven thermal gradients in the parts [42,56,[98][99][100][101][102]. To control the thermal gradient during powder heating and cooling and thereby fabricated unwarped and uncracked layers, various studies [42,56,[98][99][100][101][102] have investigated the relationship between scanning strategies and the properties of SLS/SLM processed parts.…”

Section: 22: Effects Of Laser Scanning Strategy On the Densificatimentioning

confidence: 99%

“…To control the thermal gradient during powder heating and cooling and thereby fabricated unwarped and uncracked layers, various studies [42,56,[98][99][100][101][102] have investigated the relationship between scanning strategies and the properties of SLS/SLM processed parts. For instance, Dewidar et al [56] identified standard, diagonal and perimeter scanning strategies ( Fig.…”

Section: 22: Effects Of Laser Scanning Strategy On the Densificatimentioning

confidence: 99%

“…In order to avoid non-uniform distribution of energy input in SLM processed parts, Su & Yang [101] identified three types of overlapping regime namely: intra-layer overlapping regime, inter-layer overlapping regime and mixed overlapping regime with coexistence of the first two types (Fig. 24).…”

Section: 22: Effects Of Laser Scanning Strategy On the Densificatimentioning

confidence: 99%

“…Their study establishes that inter-layer overlapping regime could be obtained when the track space was smaller than 0.2 mm, which produced a resultant with high relative density at the specified process parameters. Meanwhile, Su & Yang [101] noted that their study was about track space without consideration of other process parameters, such as laser power, hence, further study including other factors is expected to reveal more understanding of the track overlapping regime during SLM process. Moreover, Kruth et al [103] discussed how the temperature gradient induced internal stresses are dependent on the part geometry and the scan strategy being adopted.…”

Section: 22: Effects Of Laser Scanning Strategy On the Densificatimentioning

confidence: 99%

See 2 more Smart Citations

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

Olakanmi

Mullis

Dalgarno

2015

Progress in Materials Science

1,432

526

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Direct Laser Forming for More Complex Shaped Titanium Alloy Compacts

Miura¹,

Kang²,

Xu³

et al. 2013

Pricm

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Titanium and its alloys have been widely used for various industrial and medical applications because of their excellent characteristics of low density, high corrosion resistance and high biocompatibility. However, it is not easy to produce the complicated shape and precise components with low cost because of their poor workability. Therefore, Direct Laser Forming (DLF) is hoped to be a suitable and advanced powder processing technique. In this paper, DLF technique has been introduced to fabricate more complex shaped Ti-6Al-4V and Ti-6Al-7Nb alloy parts for aerospace and medical applications. The effects of DLF parameters on the morphology of compacts are investigated respectively by fabricating specimens, which have the typical features in the vertical plane, the horizontal plane and 3D coordinate. Eventually, not only the complex shape but also the excellent properties as same as the wrought material were achieved.

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Research on track overlapping during Selective Laser Melting of powders

Cited by 110 publications

References 13 publications

Selective Laser Melting of Ti-45Nb Alloy

Selective Laser Melting of Ti-45Nb Alloy

A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties

Direct Laser Forming for More Complex Shaped Titanium Alloy Compacts

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