GH4145 alloy has a wide range of applications in the aerospace field, mainly including:
Aero engines: In the manufacture of high-temperature components such as turbine blades and combustion chambers, GH4145 alloy is widely used due to its high-temperature strength and corrosion resistance.
Spacecraft components: Used to manufacture critical components in spacecraft that need to withstand extreme temperatures and pressures.
High-temperature industrial applications: GH4145 alloy is also an ideal material choice for other industrial applications that require high temperature and corrosion resistance.
Appendix: Material composition and content.
The chemical composition of GH4145 alloy and its weight percentage are as follows:
c (carbon): 008%
CR (Chromium): 1400～17.00%
NI (nickel): 7000%
CO (Cobalt): 100%
MO (Molybdenum): 100%
Al (aluminum): 040～1.00%
ti (titanium): 225～2.75%
Fe (iron): 500～9.00%
mn (manganese): 035%
SI (Silicon): 035%
p(phosphorus): 0015%
s(sulphur): 0015%
CU (copper): 050%
b(boron): 0001～0.006%
These precisely controlled composition ratios enable GH4145 alloy to exhibit excellent mechanical properties and stable physical properties at high temperatures.
GH4145 alloy (American grade Inconel X-750) is an age-strengthened nickel-based superalloy with excellent comprehensive mechanical properties. At present, the research at home and abroad mainly focuses on the fatigue resistance, corrosion resistance and microstructure evolution of GH4145 alloy during heat treatment, but the systematic study of the thermal deformation law of the alloy is still rare. The alloy thin-walled pipes have been used as key components in foreign advanced engines, but they are less used in China, and some preparation processes are even in a blank state.
Melting temperature range.
The thermal compression test was carried out on the Gleeble 3800 thermal simulation testing machine, and the deformation temperature was 950 1200 (interval 50), the strain rate was 0 5, 5, 10, 50 s, and the depression was 70. After deformation, the samples were longitudinally cut and electrolyzed with 10 oxalic acid solution to observe the evolution of the microstructure.
Density. =8.25g/cm3
The rheological stress of GH4145 alloy decreases with the increase of temperature and increases with the increase of strain rate. When the strain rate is low, the work hardening is not obvious, the recrystallization softening effect is relatively strong, the stress is low, and the curve is gentleThe strain rate is more than 5 sd, when the strain is low, the stress rises sharply with the increase of strain, at this time, work hardening dominates, recrystallization begins with the increase of strain, the stress reaches the peak when strain o 3, and then the recrystallization softening is greater than that of work hardening, the stress begins to decrease, and when the strain is above 0 7, the two reach equilibrium, and the deformation enters the steady-state rheology stage.