Collaboratively enhancing the strength and ductility of GH3600 Nickel-Based Ultra-Thin strips via the Pre-Precipitation process

• DOI: 10.1016/j.matdes.2023.112322
• Publication Date: 2023-09-14T02:02:59Z
• Authors: Shaoxia Yu; Qi Wang; Xiangtao Deng; Zhaodong Wang
• Keywords: STRIPS; Precipitation hardening; Hardening (computing)

Here, the effects of pre-precipitation annealing on microstructural evolution and room-temperature mechanical properties nickel-based ultra-thin strips after subsequent high-temperature were analyzed. By annealing, discontinuous grain-boundary carbide was introduced into cold-rolled 67 μm GH3600 strips, which hindered rapid migration grain boundaries. Thus, size maintained at only 5.5 holding 1050 °C for 1 h, indicating that microstructure stability significantly improved. Further, phenomenon local single-layer crystal effect caused by abnormal coarsened grains, more than 100 in during single-stage (1050 1h), eliminated. Owing to weakened free surface influence an increase strengthening effect, such as boundary strengthening, well intragranular intergranular back stress work hardening ability enhanced thereby resulting excellent comprehensive whose flow elongation 1.9 4.8 times those annealing. This study successfully provides economical easy-to-implement effective method prepare solid-solution-strengthened high-performance superalloy strips.