TY - JOUR
T1 - Mechanical properties of 3D printed CMT-WAAM 316 LSi stainless steel walls
AU - Andrade, D. G.
AU - Tankova, T.
AU - Zhu, C.
AU - Branco, R.
AU - da Silva, L. Simões
AU - Rodrigues, D. M.
PY - 2024
Y1 - 2024
N2 - The use of 3D printed stainless steel requires a deep knowledge of its mechanical properties. This paper presents material characterisation of 316LSi austenitic stainless-steel coupons manufactured by CMT-WAAM, considering different deposition directions. The specimens were tested according to ISO 6892-1, the fractures surfaces were examined by SEM for machined and as-built conditions. The material was subject to hardness test and deep microstructural analyses, to assess the anisotropy in material properties at the micro and macro scales, respectively. A thermal analysis performed by infrared thermography of the material deposition in CMT-WAAM was also performed to establish the influence of the temperature evolution (versus time and position) on the microstructural and mechanical properties of the deposited walls. Finally, a statistical assessment was carried out, including results available in the literature and a material model available in the literature was adjusted to the test results, enabling to conclude that it is possible of accurately reproducing the uniaxial stress-strain behaviour, therefore providing a necessary input for the design of steel structures with 3D printed stainless steel.
AB - The use of 3D printed stainless steel requires a deep knowledge of its mechanical properties. This paper presents material characterisation of 316LSi austenitic stainless-steel coupons manufactured by CMT-WAAM, considering different deposition directions. The specimens were tested according to ISO 6892-1, the fractures surfaces were examined by SEM for machined and as-built conditions. The material was subject to hardness test and deep microstructural analyses, to assess the anisotropy in material properties at the micro and macro scales, respectively. A thermal analysis performed by infrared thermography of the material deposition in CMT-WAAM was also performed to establish the influence of the temperature evolution (versus time and position) on the microstructural and mechanical properties of the deposited walls. Finally, a statistical assessment was carried out, including results available in the literature and a material model available in the literature was adjusted to the test results, enabling to conclude that it is possible of accurately reproducing the uniaxial stress-strain behaviour, therefore providing a necessary input for the design of steel structures with 3D printed stainless steel.
KW - Directed energy deposition
KW - Mechanical properties
KW - Stainless steel
KW - Thermal analysis
KW - Wire arc additive manufacturing
UR - http://www.scopus.com/inward/record.url?scp=85185554771&partnerID=8YFLogxK
U2 - 10.1016/j.jcsr.2024.108527
DO - 10.1016/j.jcsr.2024.108527
M3 - Article
AN - SCOPUS:85185554771
SN - 0143-974X
VL - 215
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
M1 - 108527
ER -