Nickel-based single crystal alloy

In order to meet the design needs of high-performance aircraft engines, over the years, countries attach great importance to the research and development of nickel-based single-crystal high-temperature alloys.

Single-crystal high-temperature alloys have been developing along their unique path. With the improvement of alloy design theory and production process, the 2nd generation and 3rd generation single crystal alloys with temperature resistance about 30℃ and 60℃ higher than the 1st generation single crystal alloys respectively; the representatives of the 2nd generation single crystal high temperature alloys are PWA1484('), C MSX4(2). The representatives of the 3rd generation single crystal high temperature alloys are CMSX I loll', CM SX I 11(0), R e neN6(5), etc. Research shows [(6), the 3rd generation single crystal high temperature alloy CMSX a 10 temperature resistance than the 2nd generation single crystal alloy CMSX - 4 (the highest use temperature of about (1163 ° C) about 30 ° C, its use temperature up to about 1204 ° C, at the same time, also has a very obvious creep strength advantage. In recent years, the 4th generation single crystal alloy RR3010 has been used in the latest Trent engine developed by RR in the U.K. The addition of Re and the rational application of Hf, Y, La, Ru and other elements have significantly improved the durability and environmental resistance of the new single crystal alloy.