Abstract

MUIRURI, A.M.; MARINGA, M.; DU PREEZ, W.B.  and  MASU, L.M.. Variation of impact toughness of as-built dmls Ti6al4v (ELI) specimens with temperature. S. Afr. J. Ind. Eng. [online]. 2018, vol.29, n.3, pp.284-298. ISSN 2224-7890.  http://dx.doi.org/10.7166/29-3-2076.

The response of direct metal laser sintering (DMLS) produced Ti6Al4V (ELI) to impact was investigated using an instrumented Charpy impact test machine and V-notch specimens. Impact toughness testing was conducted over the temperature range of -130^oC to 250^oC. The effect of the orientation of the V-notch, with reference to the base plate, was investigated. The results indicated that the samples that were produced with the V-notch facing the base plate (LO) had better values of impact toughness than those that were produced with the V-notch facing away from the base plate (UP) over most of the test temperatures. The study further established that as-built DMLS Ti6Al4V (ELI) retains appreciable notch toughness, even at extremely low temperatures.

        · abstract in Afrikaans     · text in English     · English ( pdf )