Static and dynamic mechanical properties of wire and arc additively manufactured SS316L and ER70S6

• Published in: Mechanics of materials 2022-01, Vol.164, p.104108, Article 104108
• Main Authors: Goviazin, Gleb Gil, Shirizly, Amnon, Rittel, Daniel
• Format: Article
• Language: English
• Subjects: ER70S6; Shear compression specimen (SCS); Shear tension specimen (STS); SS316L; Wire and arc additive manufacturing (WAAM)
• ISSN: 0167-6636; 1872-7743
• DOI: 10.1016/j.mechmat.2021.104108

The worldwide growing demand for additive manufacturing (AM) has led to the development of wire and arc additive manufacturing (WAAM) technique. In this work, SS316L and ER70S6 thick-walled cylinders were produced, and specimens were extracted in the as fabricated condition. For comparison, bulk SS316L and AISI 1020 specimens were machined from cold drawn (also in as received condition) bars and tested accordingly. Four types of specimens were used: “dog-bone” for tension, cylinder for compression, shear tension specimen (STS) and shear compression specimen (SCS) for both mixed shear tension and shear compression loading, respectively. Experiments were carried out under static (ca. 10−3 1/s) and dynamic conditions (from 102 to 104 1/s). WAAM SS316L SCS under static conditions, and WAAM cylinder under dynamic loading showed a unique stress-strain curvature (hardening) that was not observed for the bulk material. By contrast, WAAM ER70S6 material shows somewhat similar properties to those of AISI 1020, indicating it might be a suitable candidate for repair or even material replacement for AISI 1020 as a material for AM products. [Display omitted] •WAAM thick-walled cylinders from SS316L and ER70S6 were fabricated.•Static and dynamic mechanical properties in different loading modes were investigated.•WAAM SS316L has completely a different behavior than the wrought material.•WAAM 316L shows an upward concave hardening behaviour for large strains.•However, WAAM ER70S6 might be a good substitute for wrought AISI 1020.