Amorphous Metal Cladding via UAM for Strong Composite Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Amorphous metal alloys face limitations in engineering applications due to low fracture toughness, difficulty in joining with other materials, and scale-up challenges, which are exacerbated by the subpar ductility and fracture toughness of printed structures, particularly in extreme temperature conditions where epoxy-based bonding is inadequate.
Innovation Solution
Ultrasonic additive manufacturing (UAM) is used to metallurgically bond amorphous metal foils to substrates through plastic deformation, creating a strong, amorphous microstructure with minimal crystallinity and porosity, thereby overcoming the limitations of traditional cladding methods by forming ductile and fracture-resistant composite structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional cladding methods (roll bonding, co-extrusion, weld overlay, laser cladding) are used to join amorphous metals to substrates, then cladding can be achieved, but the process is labor and time intensive and may fail to achieve desired specifications
Solution Approach 1:
The invention changes the fundamental parameters of the joining process by using ultrasonic additive manufacturing instead of traditional thermal or mechanical cladding methods. This enables precise control of bonding parameters (ultrasonic frequency, amplitude, pressure, travel speed) to achieve reliable metallurgical bonds while reducing process time and labor intensity compared to conventional methods
Solution Approach 2:
The invention replaces traditional mechanical cladding systems (roll bonding, weld overlay) with an ultrasonic-based additive manufacturing system. This substitution enables layer-by-layer construction with precise control over bond quality and eliminates the labor-intensive nature of traditional cladding processes
2Ease of manufacture
If epoxy-based bonding is used to join amorphous metals, then joining can be achieved, but bond strength is inadequate under high cycling and loading conditions
Solution Approach 1:
The invention fundamentally changes the bonding mechanism from chemical adhesion (epoxy) to metallurgical bonding through ultrasonic welding. This parameter change enables bonds that can withstand high cycling and loading conditions while maintaining ease of manufacture through automated ultrasonic additive manufacturing processes
3Volume of stationary object
If amorphous metal structures are scaled up beyond traditional casting thickness, then larger components can be produced, but ductility and fracture toughness become subpar
Solution Approach 1:
The invention divides the amorphous metal component into thin foils that are subsequently bonded together using ultrasonic additive manufacturing. This segmentation allows each foil to maintain its superior ductility and fracture toughness properties while achieving the desired large component size through layer-by-layer construction
Solution Approach 2:
The invention creates a composite structure by bonding multiple amorphous metal foils together. This composite approach preserves the excellent mechanical properties of individual thin foils while achieving the required component size and complexity that cannot be obtained through traditional casting methods
4Manufacturing precision
If amorphous metal foils are used in ultrasonic additive manufacturing, then complex-shaped parts can be manufactured with high precision, but the process requires precise control of multiple parameters
Solution Approach 1:
The invention employs a multi-functional ultrasonic additive manufacturing system that integrates cutting, welding, and deposition operations in a single automated platform. This universal system handles complex-shaped part manufacturing with high precision while reducing the operational complexity through automation and integrated control of all processing parameters
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 UAM process enables the creation of cladded composites with enhanced ductility and fracture toughness, achieving high strength and corrosion resistance while maintaining the amorphous microstructure, thus expanding the application of amorphous metals in engineering beyond traditional casting thickness limitations.
Implementation Method 1
Ultrasonic additive manufacturing (UAM) is used to metallurgically bond amorphous metal foils to substrates through plastic deformation
Implementation Method 2
Ultrasonic additive manufacturing (UAM) is used to metallurgically bond amorphous metal foils to substrates through plastic deformation
Data Source
AI summary
An embodiment relates to a cladded composite comprising a cladding layer of a bulk metallic glass and a substrate; wherein the bulk metallic glass comprises approximately 0% crystallinity, approximately 0% porosity, less than 50 MPa thermal stress, approximately 0% distortion, approximately 0 inch heat affected zone, approximately 0% dilution, and a strength of about 2,000-3,500 MPa.