Effect of cold work on the microstructure and mechanical properties of ambient temperature Nimonic 263 superalloy

Nouri, Hadi; Abbasi, Seyed Mahdi; Morakabati, Maryam; Akhundzada, Adly

doi:10.22034/frj.2025.484576.1203

Effect of cold work on the microstructure and mechanical properties of ambient temperature Nimonic 263 superalloy

Document Type : Original Research Article

Authors

Hadi Nouri

Seyed Mahdi Abbasi

Maryam Morakabati

Adly Akhundzada

Materials Engineering, Materials and Manufacturing Technologies Complex, Malik Ashtar University of Technology, Tehran, Iran

10.22034/frj.2025.484576.1203

Abstract

In the present study, the effect of cold working on the microstructural changes and mechanical properties of Nimonic 263 superalloy after cold rolling, annealing and forging was investigated. For this purpose, hot-rolled samples were subjected to cold working at 33, 60 and 70%. After that, all cold-worked samples were subjected to annealing at 1050°C and aging at 800°C. The microstructural changes were investigated using optical microscopy and scanning electron microscopy as well as X-ray diffraction phase analysis. The mechanical properties of the medium were also evaluated by performing hardness and cold tensile tests. In the microstructural studies, increasing the cold working to 60% resulted in an increase in the reduction and hardness. The results of the ambient tensile test showed that with cold working, the tensile strength of Nimonic 263 superalloy increased from 957 MPa in the hot rolled state to 1074 MPa. Also, with increasing the amount of cold working to 60%, the tensile strength showed an increasing trend and then showed a trend.

Keywords

Nimonic 263 superalloy

cold work

mechanical properties

microstructure

Subjects