Journal ArticleDOI
Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds
Reads0
Chats0
TLDR
In this article, a low heat input process viz., EBW and another commonly employed process, gas tungsten-arc welding have been employed for welding of duplex stainless steels with and without nickel enhancement.Abstract:
The excellent combination of strength and corrosion resistance in duplex stainless steels (DSS) is due to their strict composition control and microstructural balance. The ferrite–austenite ratio is often upset in DSS weld metals owing to the rapid cooling rates associated with welding. To achieve the desired ferrite–austenite balance and hence properties, either the weld metal composition and/or the heat input is controlled. In the current work, a low heat input process viz., EBW and another commonly employed process, gas tungsten-arc welding have been employed for welding of DSS with and without nickel enhancement. Results show that (i) chemical composition has got a greater influence on the ferrite–austenite ratio than the cooling rate, (ii) and even EBW which is considered an immature process in welding of DSS, can be employed provided means of filler addition could be devised.read more
Citations
More filters
Journal ArticleDOI
Comparative analysis of GTAW+SMAW and GTAW welded joints of duplex stainless steel 2205 pipe
TL;DR: In this article , the microstructure, mechanical and corrosion resistance properties of two welded joints were observed and measured, and the results showed that the performance of GTAW joint is better than that of GTAw + SMAW joint.
Journal ArticleDOI
Plasma Keyhole Welding of UNS S32760 Super Duplex Stainless Steel: Microstructure and Mechanical Properties
TL;DR: In this paper, a study of the impact toughness of UNS S32760 super-duplex stainless steel is presented, where a mixture of argon with 2 vol% nitrogen was used in both plasma and shielding gas, in order to improve the austenite/ferrite balance.
Journal ArticleDOI
FEM-thermodynamic simulation methodology to predict the influence of t8/5 on the coarse grain heat-affected zone of a Cr-Mo low-alloy steel pipe
Paulo Henrique Grossi Dornelas,João da Cruz Payão Filho,Francisco Werley Cipriano Farias,Victor Hugo Pereira Moraes e Oliveira,Diogo de Oliveira Moraes,Petrônio Zumpano Júnior +5 more
TL;DR: In this paper, a microstructure-predicting methodology (MPM) using coupled physical-FEM-thermodynamic simulation to predict the influence of cooling time from 800 to 500°C (t8/5 − 15, 30, 80, and 210
Dissertation
Contribution a l’etude de la cohesion du joint de soudure heterogene entre un acier duplex et un acier hsla
TL;DR: In this article, the evolution of the microstructure and les proprietes mecaniques de soudures heterogenes entre un acier inoxydable duplex and un aciar faiblement allie API 5L X52, en utilisant two metaux d'apport differents : duplex E2209 and austenitique E309.
Journal ArticleDOI
Mechanical properties of duplex stainless steel laser joints
TL;DR: In this article, the authors express their gratitude to the Asociaci de Investigacion de Optica de la Comunidad Valenciana [Community of Valencia Optics Research Association] for the application of the laser welds and to the Spanish Ministry of Science and Technology for providing support through Project MAT2001-1123-C03-02.
References
More filters
Book
Duplex stainless steels : microstructure, properties and applications
TL;DR: In this paper, the authors present a non-destructive testing of welds for service experience, based on the application of service experience in metallurgy and metallurgical applications.