You may have heard that powder metallurgy (PM) is widely applied in the mechanical industry.
But do you know about powder metallurgy applications in aerospace?
PM can manufacture high-performance materials and mass-produce complex near net shape parts. This is exactly what aerospace applications need.
Let’s delve deeper:
Powder Metallurgy Materials in Aerospace
Powder Metallurgy Applications in Aerospace Parts
Thermal Spray Coatings for Aerospace Applications
Benefits of Powder Metallurgy Parts in Aerospace
Powder Metallurgy Materials in Aerospace
Superalloys (high-performance alloys)
Do you know super alloy? Superalloys are alloy materials with relatively high melting points, usually based on cobalt or nickel. According to a study of University of Cambridge, superalloys can operate at temperatures around 0.7 times their melting point. This makes them widely used in aviation, aerospace, and medical applications.
Nickel-based superalloys
Nickel-based superalloys are one of the most important materials in aero engines for the following reasons:
High temperature strength
Excellent corrosion resistance
Good fatigue performance
It is mainly utilized to manufacture turbine discs, turbine blades, etc. Through powder metallurgy technology, you can improve the purity and uniformity of nickel-based alloys. And it can also reduce oxygen content and impurities, and boost the strength and toughness of sintered parts.
Gas atomization (GA)
Electrode induction melting gas atomization (EIGA)
Plasma rotating electrode process (PREP)
For example, Inconel 625 is ideal for aircraft piping systems and Engine thrust-reverser systems. INCONEL 718 is used in liquid-fuel rocket components and aircraft engine parts due to its ease of fabrication, affordability, and good properties.
Cobalt-based superalloy
Cobalt-based superalloy is another material commonly used in aerospace manufacturing. It plays an important role in manufacturing turbine engines, gas turbines, and other components.
Compared with nickel-based superalloys, cobalt-based superalloys have a higher melting temperature, most of which are above 1300°C. And it has better high temperature corrosion resistance and durability. This makes it employed in the guide vanes of aircraft engines to avoid failures at high temperatures.
Gas atomization (GA)
Electrode induction melting gas atomization (EIGA)
Plasma rotating electrode process (PREP)
For example, Inconel 625 is ideal for aircraft piping systems and Engine thrust-reverser systems. INCONEL 718 is used in liquid-fuel rocket components and aircraft engine parts due to its ease of fabrication, affordability, and good properties.
Cobalt-based superalloy
Cobalt-based superalloy is another material commonly used in aerospace manufacturing. It plays an important role in manufacturing turbine engines, gas turbines, and other components.
Compared with nickel-based superalloys, cobalt-based superalloys have a higher melting temperature, most of which are above 1300°C. And it has better high temperature corrosion resistance and durability. This makes it employed in the guide vanes of aircraft engines to avoid failures at high temperatures.
Gas atomization (GA)
Electrode induction melting gas atomization (EIGA)
Plasma rotating electrode process (PREP)
For example, Inconel 625 is ideal for aircraft piping systems and Engine thrust-reverser systems. INCONEL 718 is used in liquid-fuel rocket components and aircraft engine parts due to its ease of fabrication, affordability, and good properties.
Cobalt-based superalloy
Cobalt-based superalloy is another material commonly used in aerospace manufacturing. It plays an important role in manufacturing turbine engines, gas turbines, and other components.
Compared with nickel-based superalloys, cobalt-based superalloys have a higher melting temperature, most of which are above 1300°C. And it has better high temperature corrosion resistance and durability. This makes it employed in the guide vanes of aircraft engines to avoid failures at high temperatures.
Benefits of Powder Metallurgy Parts in Aerospace
Lightweight Components
PM can produce lightweight components using materials including aluminum, titanium, and Al-SiC MMC. This can reduce aircraft fuel consumption.
In China’s aerospace field, the use of titanium-aluminum low-pressure turbine blades can reduce the weight of aircraft engines weighing about 3,000 kilograms by 30 to 50 kilograms, greatly reducing fuel consumption.
Complex Geometries
PM techniques such as powder injection molding (PIM) and hot isostatic pressing (HIP) can make complex shapes and geometries that are difficult or impossible to achieve with traditional machining methods.
High Strength and Durability
Powder metallurgy process allows for the production of materials with tailored properties, such as high strength-to-weight ratios and excellent fatigue resistance.
Cost-Effective Production
Reduced material waste, lower energy consumption, and fewer machining steps.
Heat Resistance
Powder metallurgy technology can produce specific high-temperature resistant materials, particularly the third generation nickel-based high-performance alloy—FGH98.
