Detail publikačního výsledku

Effect of Process Parameters and High-Temperature Preheating on Residual Stress and Relative Density of Ti6Al4V Processed by Selective Laser Melting

MALÝ, M.; HÖLLER, C.; SKALON, M.; MEIER, B.; KOUTNÝ, D.; PICHLER, R.; SOMMITSCH, C.; PALOUŠEK, D.

Originální název

Effect of Process Parameters and High-Temperature Preheating on Residual Stress and Relative Density of Ti6Al4V Processed by Selective Laser Melting

Anglický název

Effect of Process Parameters and High-Temperature Preheating on Residual Stress and Relative Density of Ti6Al4V Processed by Selective Laser Melting

Druh

Článek WoS

Originální abstrakt

The aim of this study is to observe the effect of process parameters on residual stresses and relative density of Ti6Al4V samples produced by Selective Laser Melting. The investigated parameters were hatch laser power, hatch laser velocity, border laser velocity, high-temperature preheating and time delay. Residual stresses were evaluated by the bridge curvature method and relative density by the optical method. The effect of the observed process parameters was estimated by the design of experiment and surface response methods. It was found that for an effective residual stress reduction, the high preheating temperature was the most significant parameter. High preheating temperature also increased the relative density but caused changes in the chemical composition of Ti6Al4V unmelted powder. Chemical analysis proved that after one build job with high preheating temperature, oxygen and hydrogen content exceeded the ASTM B348 limits for Grade 5 titanium.

Anglický abstrakt

The aim of this study is to observe the effect of process parameters on residual stresses and relative density of Ti6Al4V samples produced by Selective Laser Melting. The investigated parameters were hatch laser power, hatch laser velocity, border laser velocity, high-temperature preheating and time delay. Residual stresses were evaluated by the bridge curvature method and relative density by the optical method. The effect of the observed process parameters was estimated by the design of experiment and surface response methods. It was found that for an effective residual stress reduction, the high preheating temperature was the most significant parameter. High preheating temperature also increased the relative density but caused changes in the chemical composition of Ti6Al4V unmelted powder. Chemical analysis proved that after one build job with high preheating temperature, oxygen and hydrogen content exceeded the ASTM B348 limits for Grade 5 titanium.

Klíčová slova

Selective Laser Melting; Ti6Al4V; residual stress; deformation; preheating; relative density; powder degradation

Klíčová slova v angličtině

Selective Laser Melting; Ti6Al4V; residual stress; deformation; preheating; relative density; powder degradation

Autoři

MALÝ, M.; HÖLLER, C.; SKALON, M.; MEIER, B.; KOUTNÝ, D.; PICHLER, R.; SOMMITSCH, C.; PALOUŠEK, D.

Rok RIV

2019

Vydáno

20.03.2019

Nakladatel

MDPI

Místo

Švýcarsko

ISSN

1996-1944

Periodikum

Materials

Svazek

12

Číslo

6

Stát

Švýcarská konfederace

Strany od

1

Strany do

13

Strany počet

13

URL

https://www.mdpi.com/1996-1944/12/6/930

Plný text v Digitální knihovně

http://hdl.handle.net/11012/138396

BibTex

@article{BUT156298,
  author="Martin {Malý} and Christian {Höller} and Mateusz {Skalon} and Benjamin {Meier} and Daniel {Koutný} and Rudolf {Pichler} and Christof {Sommitsch} and David {Paloušek}",
  title="Effect of Process Parameters and High-Temperature Preheating on Residual Stress and Relative Density of Ti6Al4V Processed by Selective Laser Melting",
  journal="Materials",
  year="2019",
  volume="12",
  number="6",
  pages="1--13",
  doi="10.3390/ma12060930",
  url="https://www.mdpi.com/1996-1944/12/6/930"
}

Dokumenty

materials-12-00930