Caculating Invesigaion Of The Influence Of High Meltingpoint Element Of Phase Microstructure Characteristics Of Electronic Structural Parameters On Nickel-Based Superalloy

Nickel-based superalloy has good resistance to oxidation, creep and other high-temperature capability, it is an important guarantee for the growth of the aviation industry, which is widely used in advanced aero-engine turbine blades and vanes for its important high-temperature structural materials. High melting point elements W, Mo, Ta, Re is a nickel-based superalloy important strengthening element, which can extraordinary enhance the high temperature properties. However, The micro mechanism need to be penetrate deeply study.In this paper, we use the Empirical Electron Theory of Solids and Molecules (EET) that proposed by Academician Yu Ruihuang, and the experience way of binding energy based on EET, and establish computational model of nickel-based superalloy. Computing the electronic structure of microstructure parameters influence of CMSX-10 alloy which added melting elements W, Mo, Ta, Re. And on this basis, compute the structure parameters of the first generation CMSX-2, the second generation CMSX-4 and the third generation CMSX-10, Preliminary in electronic level, this paper discusses the high melting point elements impact on the high temperature properties of the alloy.The results show that:1) With high-melting alloy elements added in the CMSX-10 alloy, nA'??N and Ec of ? and ?' phase are increased, which show that high melting point elements can improve the strength of the bonding force between the metal atoms and hind the raft row of ?' phase, so enhance the phase stability of the alloy and ability to hold out deformation.2) After different content of high melting point elements join CMSX-10 alloy, with the growing number of element content, nA'and ?N of ? and ?'phase have different degrees of trend, overall, high melting point elements mainly strengthening the ?'phase.3) nA' and ?N of ? and ?' phase of CMSX-2 alloy?CMSX-4 alloy and CMSX-10 alloy increased in turn, which show that the phase stability and the ability to hold out deformation increased in turn, and alloy bearing temperature ability enhancement.4) ? of CMSX-2 alloy?CMSX-4 alloy and CMSX-10 alloy increased in turn,??'of ?-Me/Ni interface reduced in turn, which show that bearing temperature capability of alloy.??'of ?'-Me/Ni interface increased in turn, which show that against alloy bearing temperature ability.