Results 181 to 190 of about 1,670 (229)
Laser Technologies of Welding, Surfacing and Regeneration of Metals with HCP Structure (Mg, Ti, Zr): State of the Art, Challenges and Prospects. [PDF]
Materials (Basel)Zwoliński A +2 more
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An RSM-Based Investigation on the Process-Performance Correlation and Microstructural Evolution of Friction Stir Welded 7055 Al/2195 Al-Li Dissimilar T-Joints. [PDF]
Materials (Basel)Lin B +6 more
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Effect of post weld heat treatment on weldability of high entropy alloy welds
Science and Technology of Welding and Joining, 2018The effect of post weld heat treatment (PWHT) temperature on laser beam welds in high-entropy alloys (HEAs) using a cold-rolled cantor system (CoCrFeMnNi) was investigated. Laser welding of low heat input was applied to reduce thermal distortion. The cold-rolled HEA welds indicated larger grain size and inferior tensile/hardness properties as compared ...
Hyoung Seop Kim +2 more
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Welding Procedures and Post Weld Heat Treatment
2022All of the weld processes described in Chapter 7 are capable of producing high quality welds. As further described in that chapter, some processes are limited either by the process itself, or for practical reasons, to the production of certain types of welds. Regardless of the weld process or type, numerous variables affect weld quality.
Owen R. Greulich, Maan H. Jawad
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Hyperbaric Post Weld Heat Treatment
Offshore Technology Conference, 1983ABSTRACT This paper describes a sub-sea hyperbaric Post Weld Heat Treatment (PWHT) system developed jointly by SHELL UK EXPLORATION & PRODUCTION and COMEX DIVING. It discusses:Assessment of power requirements and equipment,Initial tests conducted in the COMEX hydrosphere and in shallow water in Marseille,Full ...
Stuart Saunderson, David Waller
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Welding, Repair and Local Post Weld Heat Treatment Residual Stresses
Volume 2: Computer Technology & Bolted Joints; Design & Analysis, 2023Abstract The study presented deals with an industrial case and relates to the calculation of the residual stresses in a butt weld of two shells of large diameter, high thickness and great length constituting part of pressure equipment. After completion of the weld, it can be repaired if unacceptable defects are detected ...
François Billon +4 more
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In-Situ Post-Weld Heat Treatment of Wet Welds
Offshore Technology Conference, 19921.0 Introduction There is a substantial interest in implementing wet welding for structural repairs of offshore installations. Some of the restrictions to its use are heat affected zone (HAZ) hardening and cracking, and the inability to produce wet welds that meet the bend test requirements of a surface weld ...
Peter Szelagowski +3 more
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Post-weld heat-treatment cracking in superalloys
International Metals Reviews, 1983This review is concerned with a type of cracking that often occurs during the postweld heat-treatment of Ni-base superalloys. The metallurgical factors and process variables that influence crack sensitivity are discussed in detail. The various types of tests available to study this type of embrittlement and the limitations of each approach are briefly ...
R. Thamburaj, w. Wallace, J. A. Goldak
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IN792 DS Superalloy: Optimization of EB Welding and Post-Welding Heat Treatments
Materials Science Forum, 2016Electron beam (EB) welding has been used to realize the seams on 2 mm thick plates of directionally solidified (DS) IN792 superalloy. A grid of the samples has been prepared by varying the pass speed v from 1 to 2.5 m/min, while the other process parameters (power P = 1 kW, acceleration voltage T = 50 kV, beam current I = 20 mA) were kept constant ...
Barbieri G. +4 more
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