Rupture behavior and fracture mode for Inconel 625-9% Cr steel dissimilar welded joints at high temperature

Modeling of welded joints under creep conditions with finite element analysis was undertaken using the theta projection method. The results were compared to modeling based on a simple Norton law. Theta projection data extends the accuracy and predictive capability of finite element modeling of critical structures operating at high temperature and pressure. In some cases analyzed, it was found that the results diverged from those gained using a Norton law creep model. [S0094-9930(00)00601-6]

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High temperature corrosion and electrochemical behavior of INCONEL 625 weld overlay in PbSO4–Pb3O4–PbCl2–CdO–ZnO molten salt medium

Corrosion Science ◽

10.1016/j.corsci.2014.03.034 ◽

2014 ◽

Vol 85 ◽

pp. 60-76 ◽

Cited By ~ 27

Author(s):

E. Mohammadi Zahrani ◽

A.M. Alfantazi

Keyword(s):

High Temperature ◽

Molten Salt ◽

Electrochemical Behavior ◽

High Temperature Corrosion ◽

Inconel 625 ◽

Salt Medium ◽

Weld Overlay

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High-temperature oxidation performance of Inconel 625 superalloy fabricated by wire arc additive manufacturing

Corrosion Science ◽

10.1016/j.corsci.2022.110087 ◽

2022 ◽

pp. 110087

Author(s):

Mahmood Sharifitabar ◽

Samira Khorshahian ◽

Mahdi Shafiee Afarani ◽

Pravin Kumar ◽

Neelesh Kumar Jain

Keyword(s):

High Temperature ◽

Additive Manufacturing ◽

High Temperature Oxidation ◽

Inconel 625 ◽

Temperature Oxidation ◽

Oxidation Performance ◽

Inconel 625 Superalloy ◽

Wire Arc Additive Manufacturing

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Problems Accompanying Repairs of Chemical Equipment

Biuletyn Instytutu Spawalnictwa ◽

10.17729/ebis.2020.2/2 ◽

2020 ◽

pp. 13-19

Author(s):

Edmund Tasak ◽

Aneta Ziewiec

Keyword(s):

Heat Treatment ◽

High Temperature ◽

Welded Joints ◽

Chemical Equipment ◽

Treatment Processes ◽

Welding Technology ◽

Long Time ◽

Formation Of Cracks

The paper presents problems experienced during repairs of structures operated at high temperature for a long time. Research-related TOFD method-based ultrasonic tests revealed indications implying the presence of unacceptable imperfections in welded joints. Attempted repairs involving the use of welding methods proved ineffective as the welding and heat treatment processes resulted in the formation of cracks. The tests and analysis of the above-named issue revealed that the reason for repair-related problems lay in relaxation cracks triggered by excessively high stresses in the joints and improper parameters of heat treatment to which the steel of the boiler was subjected. The welding technology developed as a result of the study enabled the performance of the proper repair of related equipment and made it possible to re-start the production.

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