|
|||||
|
|
Basic alloy development of low-transformation-temperature fillers for AISI 410 martensitic stainless steel |
|
| Authors: | S. A. Hosseini H. Moshayedi F. Warchomicka N. Enzinger |
| Affiliation: | 1. Department of Materials Science and Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran!["ORCID]({"type":"image","src":"/templates/jsp/images/orcid.png"} "\"ORCID") https://orcid.org/0000-0002-9706-8276;2. AUT Weld Center, Technology Institute of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran;3. Institute of Materials Science, Joining and Forming, Graz University of Technology, Graz, Austria;4. Institute of Materials Science, Joining and Forming, Graz University of Technology, Graz, Austriahttps://orcid.org/0000-0003-0051-9518 |
| Abstract: | ABSTRACTThis study discusses the effect of Ni content of low-transformation-temperature (LTT) fillers on welding residual stresses of AISI 410 plates. The plates were joined by LTT fillers with 11?wt-% Cr and varying Ni from 3 to 11?wt-%. Evaluation of varying Ni content on the martensitic transformation temperature (Ms) by dilatometric tests indicates that the Ms of LTT fillers decreases from 335°C to 67°C by increasing Ni wt-%. Residual stress measurements show the highest compressive longitudinal stress (?310?MPa) in the weld bead deposited by the LTT filler contained 7?wt-% Ni and Ms?=?202°C. This result is associated with the highest final expansion strain (0.37%) in this composition. Microstructural analyses show the presence of retained austenite by increasing the Ni more than 7?wt-%. |
| Keywords: | Low transformation-temperature filler welding residual stresses Ni content martensitic transformation GTAW |