Amorphous Alloy Joining via Controlled Cooling Transition
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Solution Overview
Problem
Conventional methods for joining amorphous alloy materials to heterogeneous materials result in low bonding strength and impact resistance, with increased production costs due to complex processes and high material costs, limiting their industrial application.
Innovation Solution
A method involving the formation of a transition connection part with a fusion welded structure, microstructure reinforcing connection structure, or composite connection structure by heating the amorphous alloy material and heterogeneous material to specific temperatures and cooling rates, enhancing bonding strength and reducing the requirements for the amorphous alloy's forming ability and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional joining methods are used to connect amorphous alloy material to heterogeneous material, then the bonding strength is low and impact resistance is poor, but the production cost increases due to complex processes
Solution Approach 1:
The patent applies parameter changes by controlling the cooling rate during the joining process. Specifically, the amorphous alloy material is cooled at a rate within 10°C/s to 1000°C/s to form a transition connection part with a specific microstructure. This controlled parameter change enables the formation of a metallurgical bond with high bonding strength while avoiding complex multi-step joining processes, thus resolving the contradiction between bonding strength and process complexity.
2Strength
If amorphous alloy material is used to manufacture precise structural members, then high strength and corrosion resistance are achieved, but machining cost increases significantly
Solution Approach 1:
The patent applies preliminary action by forming the transition connection part with optimized microstructure during the joining process itself, before any subsequent machining operations. The controlled cooling rate creates a gradient microstructure that provides both high strength and improved machinability in the connection zone, reducing the need for expensive post-machining operations while maintaining the high strength properties of the amorphous alloy.
3Stability of the object's composition
If high cooling rate is applied to maintain amorphous structure, then material properties are preserved, but bonding strength to heterogeneous material decreases
Solution Approach 1:
The patent applies local quality by creating a spatial gradient in the cooling rate across different regions of the amorphous alloy material. The region adjacent to the heterogeneous material experiences a controlled cooling rate that promotes bonding, while other regions maintain faster cooling to preserve the amorphous structure. This localized control of cooling parameters enables both strong bonding and structure preservation simultaneously.
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
The method achieves high bonding strength and impact toughness between amorphous alloy and heterogeneous materials, reducing material usage and production costs, while enabling the creation of complex structures with improved reliability and safety.
Implementation Method 1
heating the heterogeneous material to a predetermined temperature, and then casting the heterogeneous material into the mold to form a transition connection part, the transition connection part joining the amorphous alloy material to the heterogeneous material and having one of a fusion welded structure
Implementation Method 2
heating the heterogeneous material to a predetermined temperature, and then casting the heterogeneous material into the mold
Implementation Method 3
cooling the amorphous alloy material and the heterogeneous material at a rate higher than a critical cooling rate of the amorphous alloy material
Data Source
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AI summary
A method of joining an amorphous alloy material to a heterogeneous material and a composite formed by the same are provided. The method comprises steps of: placing a pre-formed piece made of one of the amorphous alloy material and the heterogeneous material into a mold; heating the other of the amorphous alloy material and the heterogeneous material to a predetermined temperature, and casting the other of the amorphous alloy material and the heterogeneous material into the mold to form a transition connection part joining the amorphous alloy material to the heterogeneous material and having a fusion welded structure, a microstructure reinforcing connection structure and a composite connection structure; and cooling the amorphous alloy material and the heterogeneous material at a rate higher than a critical cooling rate of the amorphous alloy material to obtain a composite formed by joining the amorphous alloy material to the heterogeneous material by the transition connection part.