Tribological Behavior of Weld Zone in TIG-Welded AISI410 Martensitic Stainless Steel
نویسندگان
1 Department of Materials and Metallurgical Engineering, Faculty of Engineering, Arak University, Arak, Iran
2 Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
3 Department of Materials and Metallurgical Engineering, Faculty of Engineering, Arak University, Arak, Iran
4 Department of Materials and Metallurgical Engineering, Faculty of Engineering, Arak University, Arak, Iran
doi
10.22034/ijissi.2025.2039415.1302چکیده
The influence of different filler metals on tribological properties of TIG-welded AISI410 steel was studied. The microstructure and tribological properties of the welded samples were detected via optical microscopy, scanning electron microscopy and reciprocating wear test. Additionally, the hardness of the weld zone in different samples was measured via the Vickers hardness test. The microstructure of the welded sample with the ER80S filler metal with a Cr eq /Ni eq ratio of 1.6 was fully martensitic, whereas in the welded sample with the ERNiCrCoMo-1 filler metal with a Cr eq /Ni eq ratio of 0.66, only an austenitic microstructure was observed. Additionally, the welded sample with an ER410 filler metal Cr eq /Ni eq ratio of 3.1 had a dual-phase microstructure containing ferrite grains and tempered martensite; in contrast, the welded sample with an ER312 filler metal with Cr eq /Ni eq ratio of 2.35 had a dual-phase microstructure containing columnar austenite and interdendritic and vermicular ferrite. Compared with the other weld metals, the sample welded with the ER80S filler metal had a greater hardness (560 HV) and therefore lower mass loss (40 mg) owing to the formation of a fully martensitic microstructure. The wear mechanism of the samples welded with ER80S and ER410 filler metals was delamination, whereas in the samples welded with ERNiCrCoMo-1 and ER312 filler metals, microplowing abrasives and abrasive and adhesive wear mechanisms were seen, respectively.
