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Taking CuAlNi as an example, we detail the LiM Laser shape memory alloy additive manufacturing process.
Author：
Time：2025-08-15
Shape memory alloys (SMAs) are a class of intelligent materials with a shape memory effect. They can return to their original shape when heated to a specific temperature. In their parent phase (austenite), they exhibit superelasticity, combined with excellent damping properties and corrosion resistance. Among the various shape memory alloy systems, copper-based alloys offer broad application prospects due to their low cost, excellent processability, high thermal conductivity, sensitive response, and a wide and easily adjustable phase transition temperature range. They have found significant applications in various industrial fields.
However, current additive manufacturing techniques for complex shape memory alloys are prone to defects such as lack of fusion, keyholes, spheroidization, and cracks. To address the characteristics and forming challenges of copper-based shape memory alloys, the LiM Laser team conducted in-depth research and optimized the selective laser melting (SLM) process parameters. Using their proprietary LiM-X150A series equipment, they successfully achieved high-quality and stable forming of CuAlNi shape memory alloys.
Material Characteristics
CuAlNi alloy is a key representative of copper-based shape memory alloys, primarily composed of copper (Cu), aluminum (Al), and nickel (Ni). It exhibits high thermal conductivity, excellent mechanical properties, and a significant shape memory effect.
Applications
It is widely used in aerospace (such as variable-structure drive components), high-end mechanical equipment, and marine engineering (such as corrosion-resistant structural parts and superelastic components).
Applications
CuAlNi specimens printed by the LiM-X150A series
Metallographic image of the specimen
Strict testing demonstrates excellent printed specimen performance and high density, with specimen thicknesses as thin as 0.5mm, fully demonstrating LiM Laser's advanced process technology.
The LiM-X150A series is a proven LiM Laser model, offering two build sizes. Designed and manufactured in accordance with ISO standards, the entire machine is CE certified for safety and explosion-proof performance, ensuring safety, reliability, and ease of operation. With a 220V input voltage, it is widely applicable, particularly in universities, research institutes, and other locations where non-380V industrial power is used. It is widely used in education, research, and other fields.
As a comprehensive metal 3D printing solutions provider with extensive experience, the LiM Laser technical team is driven by innovative R&D, meticulously researching process technologies, and continuously achieving stable forming of special materials. We will also accelerate our R&D process to continuously provide users with safer, more stable, and high-performance metal 3D printing equipment.
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