| Abstract Scope |
to ensure the long-term use and fuel efficiency at launch of satellites, lightweight alloys with high strength and toughness (e.g., Al and Ti) are commonly used in their components. moreover, the wide temperature variations in operational orbits, ranging from approximately -200 °C to 100 °C, could lead to cyclic thermal expansion. thus, components such as antennas and connecting rods should be composed of materials with a low coefficient of thermal expansion (CTE), such as invar alloy or CFRP composite, to ensure precise signal transmission and the rigidity of the satellite body. consequently, satellite components are now composed of relatively complex combinations of lightweight alloys and low-CTE materials, resulting in intricate manufacturing processes and component structures. herein, we have fabricated a steel laminate that achieves a remarkable balance between strength, toughness, and low-CTE properties. the laminate plate was produced using a clad teeming technique, combining invar alloy and advanced high-strength steels. |