Results 61 to 70 of about 101,475 (206)

Microstructural evolution of a low-alloy steel / nickel superalloy dissimilar metal weld during post-weld heat treatment [PDF]

open access: yesarXiv, 2019
The microstructural evolution of a dissimilar metal weld (DMW) obtained by narrow-gap gas tungsten arc welding (NG-GTAW) was investigated after it was subjected to a post-weld heat treatment (PWHT). The case studied here is a joint between low-alloy steel pipes and a stainless steel steam generator using a nickel based alloy as filler material.
arxiv  

Microstructure and thermal properties of unalloyed tungsten deposited by Wire + Arc Additive Manufacturing [PDF]

open access: yes, 2019
Tungsten is considered as one of the most promising materials for nuclear fusion reactor chamber applications. Wire + Arc Additive Manufacturing has already demonstrated the ability to deposit defect-free large-scale tungsten structures, with considerable deposition rates.
arxiv   +1 more source

Corrosion Behavior of Cobalt–Chromium‐Based Laser Claddings Reinforced with Boron Nitride, Graphene Oxide, and Graphite.

open access: yesAdvanced Engineering Materials, Volume 26, Issue 20, October 2024.
Three new cobalt‐based coatings are developed by adding self‐lubricating components. Their corrosion resistance is evaluated in two electrolytes, and the addition of these modifies their corrosion behavior, obtaining corrosion rates less than 1 μm year−1 in all cases. The influence on the microstructure is analyzed by laser ablation.
Inés García‐Blanco   +4 more
wiley   +1 more source

Aluminum reinforcement by gas tungsten arc welding

open access: yesScience and Engineering of Composite Materials, 2012
Aluminum is a light metal and is widely used in a variety of industries. Aluminum-silicon has good casting properties but does not offer any suitable tribological properties.
Sarajan Zohair
doaj   +1 more source

Weldability of high nitrogen steels: A review

open access: yesReviews on Advanced Materials Science, 2023
High nitrogen steel (HNS) have been widely used in many industrial fields in place of stainless steels. As we know, the welding is the main fabricating method of the HNS structural components. In this article, the recent investigations of joining methods
Wang Xingxing   +5 more
doaj   +1 more source

Trends in GeTe Thermoelectrics: From Fundamentals to Applications

open access: yesAdvanced Functional Materials, Volume 34, Issue 39, September 25, 2024.
This work provides an insightful and timely review of the recent trends in GeTe thermoelectrics in terms of physical and chemical fundamentals, advanced methodologies, and material and device aspects, inspiring future research in theoretical, experimental, and computational branches envisaging practical applications. Abstract Germanium telluride (GeTe)
Meng Li, Xiao‐Lei Shi, Zhi‐Gang Chen
wiley   +1 more source

Toward a Standardized Approach for Characterizing β‐Fleck Defects in Titanium Alloys

open access: yesAdvanced Engineering Materials, Volume 26, Issue 16, August 2024.
 This work presents a new way to quantify β‐fleck defects in titanium alloys. The simple method involves a combination of heat treatment and metallography to reveal β‐flecks using readily available tools such as optical microscopy. With open‐source image processing software, β‐flecks are identified over a large area allowing metrics to be quantified ...
Chi‐Ho Ng   +3 more
wiley   +1 more source

A STUDY EFFECT OF SOME VARIABLES IN TIG SPOT WELDING FOR (ALUMINUM – MAGNESIUM) ALLOY

open access: yesJournal of Engineering, 2006
The present work investigates the effect of some of the variables in spot tungsten inert gas shielded welding (TIG Spot) for (Aluminum-Magnesium) alloy type(5052-O) which is non–heat treatable alloy for its wide industrial uses and applications in ...
Muna K. Abbass, Haitham Y. Abdul-Majid
doaj   +1 more source

Path Planning with Automatic Seam Extraction over Point Cloud Models for Robotic Arc Welding [PDF]

open access: yesarXiv, 2020
This paper presents a point cloud based robotic system for arc welding. Using hand gesture controls, the system scans partial point cloud views of workpiece and reconstructs them into a complete 3D model by a linear iterative closest point algorithm. Then, a bilateral filter is extended to denoise the workpiece model and preserve important geometrical ...
arxiv  

Schramm Loewner Evolution and Liouville Quantum Gravity [PDF]

open access: yes, 2010
We conformally weld (via "quantum zipping") two boundary arcs of a Liouville quantum gravity random surface to generate a random curve called the Schramm-Loewner evolution (SLE). We develop a theory of quantum fractal measures (consistent with the Knizhnik-Polyakov-Zamolochikov relation) and analyze their evolution under welding via SLE martingales. As
arxiv   +1 more source

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