Optimizing the structure accuracy by changing the scanning strategy using selective laser melting

  • Jitai HanEmail author
  • Meiping Wu
  • Yanan Ge
  • Jianguo Wu


The roughness of both side and top surface and geometric tolerance affected by the scanning strategy using selective laser melting (SLM) processed by Ti6Al4V alloy were systematically studied. The specimens with a special shape were designed and produced by SLM to investigate the influence of dimension and structure accuracy. The experimental results indicated that the roughness of side and top surface was governed by the scanning strategy, especially the side surface. It shows a significant change of the surface roughness when changing the scanning direction. Some of the geometric tolerance, such as flatness and straightness, were also affected by the scanning strategy. Then the dimension accuracy was researched and showed little variation when changing scanning strategy.


Selective laser melting Ti6Al4V powder Scanning strategy Structure accuracy 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.



This study is supported by the Ministry of Education’s Joint Fund for Pre-research Project.


  1. 1.
    Xu W, Brandt M, Sun S, Elambasseril J, Liu Q, Latham K, Xia K, Qian M (2015) Additive manufacturing of strong and ductile Ti–6Al–4V by selective laser melting via in situ martensite decomposition. Acta Mater 85:74–84. CrossRefGoogle Scholar
  2. 2.
    Ravi GA, Qiu CL, Attallah MM (2016) Microstructural control in a Ti-based alloy by changing laser processing mode and power during direct laser deposition. Mater Lett 179:104–108. CrossRefGoogle Scholar
  3. 3.
    Gong HJ, Rafi K, HF G, Janaki Ram GD, Starr T, Stucker B (2015) Influence of defects on mechanical properties of Ti–6Al–4V components produced by selective laser melting and electron beam melting. Mater Des 86:545–554. CrossRefGoogle Scholar
  4. 4.
    Zhu YY, Liu D, Tian XJ, Li J, Wang HM (2014) Microstructure evolution and layer bands of laser melting deposition Ti–6.5Al–3.5Mo–1.5Zr–0.3Si titanium alloy. J Alloy Compd 616:468–474CrossRefGoogle Scholar
  5. 5.
    Shah K, Pinkerton AJ, Salman A, Li L (2010) Effects of melt pool variables and process parameters in laser direct metal deposition of aerospace alloys. Mater Manuf Process 25(12):1372–1380. CrossRefGoogle Scholar
  6. 6.
    Wu MW, Lai PH, Chen JK (2016) Anisotropy in the impact toughness of selective laser melted Ti–6Al–4V alloy. Mater Sci Eng A 650:295–299. CrossRefGoogle Scholar
  7. 7.
    Bai JM, Zhang BC, Song J, Bi GJ, Wang P, Wei J (2016) The effect of processing conditions on the mechanical properties of polyethylene produced by selective laser sintering. Polym Test 52:89–93. CrossRefGoogle Scholar
  8. 8.
    Wu MW, Lai PH (2016) The positive effect of hot isostatic pressing on improving the anisotropies of bending and impact properties in selective laser melted Ti-6Al-4V alloy. Mater Sci Eng A 658:429–438. CrossRefGoogle Scholar
  9. 9.
    Stamp R, Fox P, O’Neill W, Jones E, Sutcliffe C (2009) The development of a scanning strategy for the manufactureof porous biomaterials by selective laser melting. J Mater Sci Mater Med 20(9):1839–1848. CrossRefGoogle Scholar
  10. 10.
    Thijs L, Verhaeghe F, Craeghs T et al (2010) A study of the microstructural evolution during selective laser melting of Ti–6Al–4V. Acta Mater 58(9):3303–3312. CrossRefGoogle Scholar
  11. 11.
    Murr LE, Quinones SA, Gaytan SM, Lopez MI, Rodela A, Martinez EY, Hernandez DH, Martinez E, Medina F, Wicker RB (2009) Microstructure and mechanical behavior of Ti–6Al–4V produced by rapid-layer manufacturing, for biomedical applications. J Mech Behav Biomed Mater 2(1):20–32. CrossRefGoogle Scholar
  12. 12.
    Vrancken B, Thijs L, Kruth JP, Humbeeck JV (2012) Heat treatment of Ti6Al4V produced by selective laser melting: microstructure and mechanical properties. J Alloys Compd 541:177–185. CrossRefGoogle Scholar
  13. 13.
    Pupo Y, Monroy KP, Ciurana J (2015) Influence of process parameters on surface quality of CoCrMo produced by selective laser melting. Int J Adv Manuf Technol 80(5–8):985–995. CrossRefGoogle Scholar
  14. 14.
    Calignano F, Lorusso M, Pakkanen J, Trevisan F, Ambrosio EP, Manfredi D, Fino P (2017) Investigation of accuracy and dimensional limits of part produced in aluminum alloy by selective laser melting. Int J Adv Manuf Technol 88(1–4):451–458. CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Mechanical EngineeringJiangnan UniversityWuxiPeople’s Republic of China
  2. 2.Additive Manufacturing Products Supervision and Inspection Center of Jiangsu ProvinceInstitution of Supervision and Testing on Product QualityWuxiPeople’s Republic of China

Personalised recommendations