Characterisation of an Advanced Nickel Based Superalloy Post Cold Work by Swaging

Abstract

Cylindrical bars of the advanced nickel based superalloy RR1000 were subjected to swaging to induce approximately 30% cold work. Grain size analysis demonstrated a distinct modification to the microstructure whilst electron back scattered diffraction (EBSD) measurements confirmed the evolution of a relatively strong <111> texture parallel with the longitudinal bar axis. Intragranular strain damage was identified. The effects of the swaging on bulk mechanical properties are illustrated across a range of test temperatures.

Characterisation of handling and service surface damage on Nickel alloys caused by low velocity impacts of blunt hard objects

“…The central gauge length of the specimens has a cross-section of 5 × 11 mm and a length of approximately 14 mm. The specimens are made of the RR1000 Nickel superalloy with fine grain micro-structure, which has a composition as described in Table 1 (Bache et al, 2016;Mitchell et al, 2004). The surface of the specimens where the dents were created were milled and shot peened.…”