Abstract
The aim of the present work is to verify the microstructural behavior of a B 521 tantalum alloy UNS Grade R05200 after welding, in relation to the welding thermal cycle. The joint design was a 1.5 mm thickness circumferential butt welding, on a 32 mm outside diameter pipe, welded in 1 G position (horizontal, flat, and rotating). The chosen welding process was gas tungsten arc welding (GTAW). The microstructural analysis showed the presence of coarse, dendritic-columnar structures, as well as a hexagonal cell, with no cracks noted. Hardness tests showed an increase in hardness, from 120 HV to 425 HV, in the heat-affected zone. Through finite element methods, the behavior of the temperature field was estimated and compared.
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference23 articles.
1. Weldability of Tantalum Alloyshttp://files.aws.org/wj/supplement/WJ_1972_06_s304.pdf
2. Caracterización de la reacción de oxidación del tantalio a Ta2O5 mediante difracción de rayos X a alta temperatura, análisis térmico y microscopía electrónica de barrido;Climent;Bol. Soc. Esp. Cerám. Vidr.,1997
3. High-temperature tantalum tungsten alloy photonic crystals: Stability, optical properties, and fabrication
4. The Processes of Fragmentation, Intermixing and Fusion upon Explosion Welding
5. Introduction of tantalum lining pressure vessel;Wang;Technol. Wind,2018
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