Amorphous Metal High-Aspect Sections on Metallic Substrates
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Solution Overview
Problem
Existing methods for producing metallic components with high aspect ratios using amorphous metals are inefficient and costly, particularly when attempting to fill complex geometries or thin-walled structures, as they often fail to achieve the necessary cooling rates for amorphous solidification while completely filling the mold.
Innovation Solution
A method involving a metallic substrate produced via non-additive metallurgical processes, such as casting or powder metallurgy, combined with additive manufacturing to apply an amorphous metal alloy section with a high aspect ratio, allowing for efficient and cost-effective production of components with complex geometries and improved mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If casting or conventional molding is used to produce high aspect ratio sections with amorphous metal, then complete mold filling is achieved, but the cooling rate is insufficient to achieve amorphous solidification
Solution Approach 1:
The component is divided into two parts: a substrate produced by conventional casting and a high aspect ratio section produced by additive manufacturing. This segmentation allows each part to be manufactured using the most appropriate process - casting for the substrate and additive manufacturing for the thin-walled section requiring amorphous solidification.
Solution Approach 2:
Additive manufacturing serves as an intermediary process that bridges the gap between conventional casting and amorphous solidification requirements. It enables precise control of cooling rates in complex geometries that cannot be achieved by conventional casting alone.
2Manufacturing precision
If rapid cooling is applied to achieve amorphous solidification, then amorphous structure is obtained, but the melt viscosity increases rapidly making it difficult to fill high aspect ratio structures
Solution Approach 1:
The additive manufacturing process dynamically controls the cooling rate during layer-by-layer construction. Each layer is rapidly cooled to achieve amorphous solidification, while the process continues sequentially to fill the entire high aspect ratio structure before final solidification, avoiding the viscosity problem of bulk rapid cooling.
Solution Approach 2:
The additive manufacturing process applies periodic heating and cooling cycles during layer construction. Each layer undergoes rapid cooling for amorphous formation, followed by brief heating for the next layer deposition, enabling progressive filling of complex geometries.
3Shape
If thermoplastic molding is used to produce high aspect ratio amorphous metal components, then the desired shape is achieved, but a negative mold is required making complex geometry production difficult
Solution Approach 1:
Instead of using a negative mold to form the component, additive manufacturing builds the component directly in positive form by depositing material layer by layer. This inverts the traditional molding approach, eliminating the need for complex negative molds while achieving complex geometries.
Solution Approach 2:
The process transitions from conventional 3D molding to layer-by-layer construction in the vertical dimension. Each thin layer is deposited and solidified sequentially, building up the high aspect ratio structure from base to top, enabling geometries that would be impossible with conventional molding.
4Adaptability or versatility
If additive manufacturing is used to produce the entire flexspline including the base plate, then production flexibility is improved, but production time and cost increase significantly
Solution Approach 1:
The flexspline is segmented into two parts: the base plate produced by efficient conventional casting and the thin-walled section produced by additive manufacturing. This segmentation allows the time-consuming additive process to be applied only where necessary for complex geometries, while the bulk substrate is produced efficiently by casting.
Solution Approach 2:
Additive manufacturing with amorphous metal is applied locally only to the thin-walled high aspect ratio section where superior mechanical properties are needed, rather than the entire component. This localized application optimizes the balance between production efficiency and component performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the production of components with high aspect ratios that exhibit advantageous mechanical properties, such as high elasticity, even with small wall thicknesses, and allows for the creation of structures that cannot be produced by conventional methods, while reducing production time and costs.
Implementation Method 1
a molten metal alloy is poured into a gap located between two mutually movable substrates and rapidly cooled
Implementation Method 2
To ensure that the melt of the alloy used solidifies amorphously, a sufficiently high cooling rate must be achieved
Implementation Method 3
the section containing the amorphous metal alloy with a high aspect ratio is applied to the metallic substrate via additive manufacturing
Data Source
AI summary
The present invention relates to a method for producing a metallic shaped body, the shaped body comprising (i) a metallic substrate and (ii) a section on the metallic substrate having a high aspect ratio and containing an amorphous metal alloy, wherein the section containing the amorphous metal alloy with a high aspect ratio is applied to the metallic substrate by additive manufacturing.