Selective laser melting W–10 wt.% Cu composite powders

Li, Ruidi; Shi, Yusheng; Liu, Jinhui; Zhan, Xie; Wang, Zhigang

doi:10.1007/s00170-009-2304-4

Cited by 65 publications

(27 citation statements)

References 31 publications

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“…Beal et al (2006) have developed functionally graded materials for SLM process and studied the scanning strategy. Li et al (2009) have also developed a new composite material and studied its sintering mechanism when fabricated by SLM process. Based on these progresses, some implementing attempts have been carried out.…”

Section: Introductionmentioning

confidence: 99%

Research on track overlapping during Selective Laser Melting of powders

Yang

2012

Journal of Materials Processing Technology

108

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Section: Introductionmentioning

confidence: 99%

Research on track overlapping during Selective Laser Melting of powders

Yang

2012

Journal of Materials Processing Technology

108

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“…SLM has aroused wide concerns and been widely used in aerospace, biomedicine, and many other engineering fields, offering a series of advantages compared with traditional processing techniques: high complexity, time saving, versatility, etc. [3][4][5][6]. However, during the SLM process, the laser molten track possesses a shrinking tendency to decrease the surface energy under the action of surface tension.…”

Section: Introductionmentioning

confidence: 99%

Balling behavior of stainless steel and nickel powder during selective laser melting process

Liu²,

Shi

et al. 2011

Int J Adv Manuf Technol

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571

253

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Balling phenomenon, as a typical selective laser melting (SLM) defect, is detrimental to the forming quality. In this work, a detailed investigation into the balling behavior of selective laser melting of stainless steel and pure nickel powder was conducted. It was found that the SLM balling phenomenon can be divided into two types generally: the ellipsoidal balls with dimension of about 500 μm and the spherical balls with dimension of about 10 μm. The former is caused by worsened wetting ability and detrimental to SLM quality; the latter has no obvious detriment to SLM quality. The oxygen content plays an important role in determining the balling initiation, which can be considerably lessened by decreasing the oxygen content of atmosphere to 0.1%. A high laser line energy density, which can be obtained by applying high laser power and low scan speed, could enable a well-wetting characteristic. The effect of scan interval on balling initiation is not obvious as long as the scan track is continuous. The surface remelting procedure can also alleviate the balling effect in a certain extent, due to the melting and wetting of metal balls.Moreover, the balling phenomenon of pure nickel was also studied, and the results implied that the balling discipline had a universality.

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“…Li and his coworkers reported that SLM of W-10 wt%Cu composite with a 100-W CW/modulated fibre laser resulted in complete melting of Cu but without melting of W [22]. The binder (Cu) was molten and infiltrated the W particles, then solidified as a continuous solid phase with uniformly distributed W particles in the Cu matrix.…”

Section: Introductionmentioning

confidence: 97%

“…Studies on selective laser melting (SLM) and direct metal laser sintering (DMLS) of bulk W-Cu composites were reported [22,23]. Li and his coworkers reported that SLM of W-10 wt%Cu composite with a 100-W CW/modulated fibre laser resulted in complete melting of Cu but without melting of W [22].…”

Section: Introductionmentioning

confidence: 98%