Effects of Stress-Relieving Heat Treatment on Impact Toughness of Direct Metal Laser Sintering (DMLS)-Produced Ti6Al4V (ELI) Parts

dc.contributor.author	Muiruri, Amos
dc.contributor.author	Maringa, Maina
dc.contributor.author	Du Preez, Willie
dc.contributor.author	Masu, Leonard
dc.date.accessioned	2021-01-02T17:24:57Z
dc.date.available	2021-01-02T17:24:57Z
dc.date.issued	2019-10-21
dc.identifier.issn	1047-4838
dc.identifier.uri	http://hdl.handle.net/11462/2085
dc.description	Published Article	en_US
dc.description.abstract	The impact toughness of as-built (AB) and stressed-relieved (SR) direct metal laser sintering-produced Ti6Al4V (ELI) was investigated using the standard Charpy impact test over the temperature range of 130 C to 250 C. Stressrelieving heat treatment was conducted at 650 C for a soaking period of 3 h in argon gas atmosphere. The results showed improvements in the impact toughness after stress-relieving heat treatment. Stress relieving also shifted the established ductile-to-brittle transition temperature to lower temperatures. Comparative analysis of the impact toughness values for AB and SR specimens at ambient temperature showed them to be 48% and 22% lower than recommended values for use in aircraft structures, respectively.	en_US
dc.language.iso	en	en_US
dc.publisher	The Journal of The Minerals, Metals & Materials Society	en_US
dc.title	Effects of Stress-Relieving Heat Treatment on Impact Toughness of Direct Metal Laser Sintering (DMLS)-Produced Ti6Al4V (ELI) Parts	en_US
dc.type	Article	en_US