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Showing 1 to 13 of 13 for “"friction stir processing"”.
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Statistical Investigation of Friction Stir Processing Parameter Relationships
Friction Stir Welding (FSW) is an emerging joining technology in which basic process understanding is still inadequate. Knowledge of FSW parameter relationships is needed to better understand the process and implement proper machine control. This study utilized a 3-factor, 3-level factorial design …
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Friction stir processing for superplasticity and other applications
Friction stir welding is a recent welding technology that had expanding the capabilities of welding aluminum alloys. From this process, it was discovered that the microstructural properties of a metal could be altered with a single pass of the tool, and from this the area of friction stir …
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Microstructure modification for improved mechanical properties in A356 Al using friction stir processing
… A356. The third paper examines the influence of processing parameters on process loads, temperature, microstructure and the corresponding static mechanical properties. The fourth and final paper deals with crack growth rates in FSP A356"--Research Objective, pages 29-30.</p>
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Effects of Friction Stir Processing on the Microstructure and Mechanical Properties of Fusion Welded 304L Stainless Steel
Friction stir processing (FSP) has been utilized to locally process regions of arc weldments in 304L stainless steel to improve the microstructure and mechanical performance. The cast microstructure and coarse delta-ferrite has been replaced with a fine-grained wrought microstructure. Furthermore, …
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From Functionally Graded to Grain-Boundary-Decorated Nanograined Alloys: a New Approach to Bulk Lightweight Alloy Design via Friction Stir Processing
… or requires multi-step processes. Therefore, new processing routes are needed to produce stable refined-grain materials without these limitations. This Ph.D. thesis proposes friction stir processing (FSP) as a greener single-step method to produce bulk ultrafine/GB-decorated nanograined materials …
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The effects of isothermal deformation and annealing on the microstructure of nickel-aluminum-bronze propeller material
… cast Nickel-Aluminum Bronze (NAB) in relation to Friction Stir Processing (FSP) of this material. Cast NAB is widely utilized by the U.S. Navy in the production of propellers for surface vessel and submarines. FSP is a novel method of deformation processing that is conducted by use of a rotating …
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Stress corrosion cracking behavior of friction stir processed ultrafine grained light metal alloys
<p>"The influence of friction stir processing (FSP), a microstructural modification tool, on the corrosion behavior of Al-Mg, Al-Mg-Sc, Mg-Al-Zn and Mg-Y-RE alloys has been studied. An attempt has been made to establish correlation between processing parameters and the subsequent microstructural …
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Two Dimensional Friction Stir Welding Model with Experimental Validation
… real-time temperature measurements during Friction Stir Processing (FSP) of 304L Stainless Steel was developed. The focus of the method was to ensure that the obtained temperatures were both accurate and repeatable. The method was then used to obtain thermal cycle data from nine welds, each …
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Fabrication and Characterization of Aluminum Nano-Carbon Composites and Investigation of Their Electrical Conductivity
… is not the case in most other methods, such as friction stir processing, ball milling and others. Raman mapping measurements, X-ray Photoelectron Spectroscopy (XPS), Transmission Electron Microscope (TEM) and Electron Energy Loss Spectroscopy (EELS) have confirmed that carbon is incorporated …
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Ontology Development and Utilization in Product Design
… cases provided by the CFSP (The NSF Center for Friction Stir Processing). This includes cost models and a decision support environment. Errors that may occur in the research are categorized with management methods. An error ontology is built to help root cause analysis of errors and further …
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Modeling and Characterization of Friction Stir Fabricated Coatings on Al6061 and Al5083 Substrates
… within the bulk of a sample during a friction stir fabrication process. The model was written in Wolfram Mathematica® 7 for Students, and allows for time-efficient calculation of thermal profiles. The non-dimensionality of the model allows for accurate refinement of the temporospatial …
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Understanding the Structure-property Relationships of Solid-state Additively Manufactured Stainless-steel Coatings
… for CS 316L. Specifically, the influence of friction stir processing (FSP) and laser shock peening (LSP) post-surface treatments on the degradation resistance of CS 316L SS was investigated. By exploring these mechanisms, a useful roadmap for robust CS 316L SS development can be realized, …
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Processing Mechanics of Additive Friction Stir Deposition
Additive friction stir deposition (AFSD) is a newly developed solid-state metal additive manufacturing (AM) technology that adds a material feeding mechanism to the friction stir principle (Yu et al.., 2018). As a newly developed process, the development of a sound understanding of the process …