scholarly journals Studies on Stress Relieving Methods for Welded Joints of Stainless Clad Steel : 5th Report, Stress and General Corrosion Test

1963 ◽  
Vol 29 (202) ◽  
pp. 1068-1074
Author(s):  
Masaki WATANABE ◽  
Hiroshi WATANABE
Keyword(s):  
Welded Joints ◽  
Corrosion Test ◽  
General Corrosion ◽  
Stress Relieving ◽  
Clad Steel

THE EFFECT OF MECHANICAL VIBRATION ON STRESS RELIEVING OF WELDED JOINTS

2019 ◽  
Author(s):  
DANILO CESAR DE AZEVEDO MONTEIRO ◽  
Tatiane de Campos Chuvas ◽  
Maria Cindra Fonseca
Keyword(s):  
Welded Joints ◽  
Mechanical Vibration ◽  
Stress Relieving

scholarly journals Welding of pipes in fixed position with internal anti-corrosion protection of joints

2021 ◽  
Vol 225 ◽  
pp. 05005
Author(s):  
Elena Bogomazova ◽  
Irina Ziyatdinova ◽  
Dmitriy Aiduganov ◽  
Anna Pershina ◽  
Alexey Anikeyev
Keyword(s):  
Corrosion Protection ◽  
Welded Joints ◽  
Oil And Gas ◽  
Negative Impact ◽  
Fixed Position ◽  
Inner Surface ◽  
Transition Structures ◽  
Oil And Gas Pipelines ◽  
Clad Steel ◽  
Welding Materials

The article reviews the weldability of clad steel used for protection of inner surface of oil-and-gas pipelines from corrosion by different welding materials. It is indicated that during welding of the root pass by stainless electrodes in one pass the transition structures appear on the interface of two dissimelar metals. This process leads to the formaion of cracks. To reduce negative impact of the transition structures on the characteristics of welded joints it is recommended to weld the first two passes with strainless electrodes.

scholarly journals A Study on the Fatigue Strength of Welded Joints of Duplex Stainless-Clad Steel Plates for Application in Chemical Tankers

2017 ◽  
Vol 35 (4) ◽  
pp. 1WL-3WL ◽  
Author(s):  
Hironori Ogata ◽  
Kazumasa Sakaida ◽  
Kenji Shinozaki ◽  
Motomichi Yamamoto ◽  
Tadakazu Tanino ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Welded Joints ◽  
Steel Plates ◽  
Clad Steel

scholarly journals Impacts of Stress Relief Treatments on Microstructure, Mechanical and Corrosion Properties of Metal Active-Gas Welding Joint of 2205 Duplex Stainless Steel

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4272
Author(s):  
Xiao-qin Zha ◽  
Yi Xiong ◽  
Tian Zhou ◽  
Yong-feng Ren ◽  
Peng-hui Hei ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Residual Stress ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Duplex Stainless Steel ◽  
Welded Joints ◽  
Stress Relief ◽  
2205 Duplex Stainless Steel ◽  
Ultrasonic Peening ◽  
Stress Relieving

Stress relief treatments were carried out separately with a pneumatic chipping hammer, ultrasonic peening treatment, and heat treatment for metal active-gas welding (MAG) welded joints of 2205 duplex stainless steel. The effects of these methods on the residual stress, microstructure, mechanical properties and corrosion resistance of welded joints were studied. Results show the stress state of the weld and the surrounding area was effectively improved by the pneumatic chipping hammer and ultrasonic peening treatment, and the residual stress field of the surface layer changed from tensile stress to compressive stress. On the contrary, low-temperature stress relieving annealing had no obvious effect on stress distribution. After the pneumatic chipping hammer and ultrasonic peening treatment, the welded joints were machined and hardened. Correspondingly, strength and hardness were improved. However, the heat treatment only led to a slight decrease in strength and hardness due to the static recovery of the welded joint structure. All stress relief methods effectively improved the corrosion resistance of welded joints, with the ultrasonic peening treatment giving the best performance.

scholarly journals Corrosion Behavior of SMA490BW Steel and Welded Joints for High-Speed Trains in Atmospheric Environments

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3043 ◽  
Author(s):  
Xiangyang Wu ◽  
Zhiyi Zhang ◽  
Weichuang Qi ◽  
Renyong Tian ◽  
Shiming Huang ◽  
...  
Keyword(s):  
Weight Loss ◽  
Corrosion Behavior ◽  
Welded Joints ◽  
Corrosion Test ◽  
High Speed ◽  
Loss Rate ◽  
Corrosion Potential ◽  
Weight Loss Rate ◽  
Cyclic Corrosion ◽  
High Speed Trains

Currently, high-speed trains work under various atmospheric environments, and the bogie as a key component suffers serious corrosion. To investigate the corrosion behavior of bogies in industrial atmospheric environments, the periodic immersion wet/dry cyclic corrosion test for SMA490BW steel and automatic metal active gas (MAG) welded joints used for bogies was conducted in the present work. Corrosion weight loss rate, structure, and composition of rust layers as well as electrochemistry parameters were investigated. The results showed that the corrosion weight loss rate decreased with increasing corrosion time; furthermore, the corrosion weight loss rate of the welded joints was lower than that of SMA490BW steel. The XRD results showed that the rust layers formed on SMA490BW steel and its welded joints were mainly composed of α-FeOOH, γ-FeOOH, Fe2O3, and Fe3O4. The observation of surface morphology indicated that the rust layers of the welded joints were much denser and had a much finer microstructure compared with those of SMA490BW steel. After corrosion for 150 h, the corrosion potential of the welded joints with rust layers was higher than that of SMA490BW steel. In short, the welded joints exhibited better corrosion resistance than SMA490BW steel because of the higher content of alloy elements, as shown in this work.

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