Search published articles


Showing 2 results for Wire Arc Additive Manufacturing
Microstructure and Mechanical Properties of Thin-Walled SS316L Fabricated by IP-GMAW-Based via WAAM
Vahid Ziaei Laleh, Habib Hamed Zargari, Jamal Sartibi,
Volume 9, Issue 2 (8-2026)
Abstract
Wire and Arc Additive Manufacturing (WAAM) is one of the modern methods of fabrication parts by arc welding under shielding gas. In this research, the thin-wall of austenitic stainless steel 316L was fabricated via WAAM based on inter-pulse current; accordingly, a thin-wall was fabricated in 25-layers using two different strategies with a reciprocating torch movement pattern. Considering the equivalent chromium and nickel content in the Scheffler diagram, it was predicted that the microstructure solidification was done in the austenitic-ferritic (AF) state. Microstructural examination by optical microscopy and X-ray diffraction confirmed the presence of austenite matrix phase alongside ferrite dendrites (about 5%). The tensile test results showed that samples extracted in the vertical direction with an average tensile strength of 454 MPa had about 12% higher strain rates than horizontal samples with a tensile strength of 436 MPa. Also, examination of fine and coarse indentations on the fracture surface of tensile test specimens by scanning electron microscopy showed that the fracture of the specimens was of the ductile type. The hardness of the fabricated thin-wall was measured in the range of 200 to 265 Vickers with an average of 234 Vickers.

Assessment of CMT and GMAW in WAAM of austenitic stainless steel 310: mitigating hot cracking and improving mechanical properties
A. Rahimi, M. Yazdizadeh, M. Vatan Ara, M. Pouranvari,
Volume 11, Issue 1 (7-2025)
Abstract
Wire-arc additive manufacturing (WAAM) is a prominent technique for producing large metallic components due to its high deposition rate. Utilizing austenitic stainless steels in this process not only reduces production costs but also provides greater design freedom. Among these steels, SS310, known as heat-resistant steel in the industry, offers excellent oxidation resistance and high-temperature performance. However, it is highly susceptible to hot cracking during welding and additive manufacturing processes. In this study, the microstructure and mechanical properties of SS310 fabricated using WAAM with Cold Metal Transfer (CMT) and Gas Metal Arc Welding (GMAW) processes were compared. The results revealed that the CMT process, due to its lower heat input, effectively reduces the susceptibility of SS310 to hot cracking compared to the GMAW process. These findings emphasize the importance of selecting an appropriate process to achieve high-quality components and minimize structural defects.

Page 1 from 1     

© 2026 CC BY-NC 4.0 | Journal of Welding Science and Technology of Iran

Designed & Developed by : Yektaweb

تحت نظارت وف بومی