High Value Manufacturing: Advanced Research in Virtual and Rapid Prototyping

Table 10. Comparison of tensile properties of SLM formed

LD and TD Ti6Al4V parts (Vilaro, Colin et al. 2011).

Scanning Laser

σ

y

UTS velocity power Laser

(MPa) (MPa) (mm/s) (W) (J/mm)

SLM 1137 ±20 1206 ±8 600 600 1.00

(LD)

SLM 962 ±47 1166 ±25 600 600 1.00

(TD)

2012). Parts were built perpendicular to the tensile

testing axis.

The higher tensilestrengthof SLM formedTi6Al4V

as compared to the wrought form was attributed to the

martensitic microstructure of the part arising from the

high temperature gradient of the SLM process.

Using both a higher scanning velocity and laser

power, Ti6Al4V parts were built in both the longitu-

dinal direction (LD) and traverse