Podcast – American Welding Society Education Online: Recent Episodes
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Devon Gonzales, along with his colleagues at the Colorado School of Mines and Los Alamos National Laboratory, conducted extensive research in order to answer a seemingly simple question: How does interstitial element distribution affect gas tungsten arc welding? Specifically, they were interested in determining how trace amounts of elements like nitrogen, phosphorus, and oxygen affect … Continue reading Effect of Interstitial Elements on the Welding of Selective Laser Melted Stainless Steel Alloys →
The post Effect of Interstitial Elements on the Welding of Selective Laser Melted Stainless Steel Alloys first appeared on American Welding Society Education Online.
M.C. Balmforth (The Materials and Engineering Group, LLC) dives into some of the more technical aspects of shielding gas properties and selection for GTAW. In this presentation, Mr. Balmforth discusses a handful of important arc/plasma properties (thermal conductivity, electrical conductivity, and current), and clears up some common misconceptions regarding what variables determine heat transfer to … Continue reading Selection and Properties of Shielding Gases Used for Welding →
The post Selection and Properties of Shielding Gases Used for Welding first appeared on American Welding Society Education Online.
Jesse Martinez, on behalf of his colleagues (Dr. P. Burhardt, Dr. C.E. Cross, and A.N. Duffield) at Los Alamos National Laboratory, discusses the results of an experiment that explored the relationship between oxygen and welding arc stability. This experiment was conducted in response to issues the research team encountered with GMA welds on aluminum in … Continue reading The Role of Oxygen in Arc Stabilization of Aluminum GMA Welds →
The post The Role of Oxygen in Arc Stabilization of Aluminum GMA Welds first appeared on American Welding Society Education Online.
Todd Evans (Vanderbilt University) discusses friction stir welding of additively manufactured aluminum alloys. Recognizing the lack of published information for materials produced using additive manufacturing, Vanderbilt’s Welding Automation Laboratory (VUWAL) and NASA teamed up to research the weldability of various aluminum alloys used in a wide range of aeronautical applications.
The post Friction Stir Welding of Additively Manufactured Aluminum Alloys first appeared on American Welding Society Education Online.
Byungchul Kim (Hyundai Heavy Industries) discusses how post-weld heat treatment (PWHT) affects intergranular corrosion in stainless steel weldments. This presentation focuses on 308 and 347 stainless steels, widely used throughout the petrochemical industry as filler metal for weld cladding in hydrotreatment and hydrodesulphurization reactors.
The post The Effect of PWHT on Intergranular Corrosion in 308 & 347 Stainless Steels first appeared on American Welding Society Education Online.
Bob Bosworth (Elite Welding Solutions, Inc.) presents a comprehensive look at grounding for automated welding. Mr. Bosworth discusses electricity basics, the challenges associated with automated weld grounding, essentials for welding ground – deployment, and engineering and design-based best practices and solutions. The presentation also includes some recent technological advancements, and a Q&A session.
The post Challenges, Solutions, and Advancements in Automated Weld Grounding first appeared on American Welding Society Education Online.
David C. Tung (The Ohio State University) presents his research on various superalloys (Super 304H, Inconel 740, Haynes 282, etc.) that are used in power plant construction. Because high-efficiency/low-emission power generation relies on the ability of these metals to withstand remarkably intense conditions, Mr. Tung’s lecture focuses specifically on Post-weld heat treatment and stress relaxation … Continue reading Stress Relaxation Cracking Testing and PWHT of Superalloys for Power Plant Construction →
The post Stress Relaxation Cracking Testing and PWHT of Superalloys for Power Plant Construction first appeared on American Welding Society Education Online.
Researchers discuss the latest advances in using the Friction Stir Welding (FSW) process to join different types of steels as well as different combinations of steels and Ni-based alloys.
The post Friction Stir Welding And Processing Of Stainless Steels And Ni-Base Alloys first appeared on American Welding Society Education Online.
Carl Cross of Los Alamos National Laboratory discusses 5 metrics related to solidification cracking susceptibility that are used to predict alloy weldability, explain cracking mechanisms, and facilitate alloy development.
The post A Critical Review of Metrics Used to Analyze Solidification Cracking and Weldability first appeared on American Welding Society Education Online.
EWI researchers worked with shipyards to identify the soundness and productivity of aluminum joints welded with four different types of GMAW.
The post Evaluation Of GMAW Technologies For Welding Aluminum In Shipyards first appeared on American Welding Society Education Online.