Brittle fracture analysis of Dissimilar Metal Welds between low-alloy steel and stainless steel at low temperatures

Salem, Ghassen Ben; Chapuliot, S.; Blouin, Arnaud; Bompard, Philippe; Jacquemoud, Clémentine

doi:10.1016/j.prostr.2018.12.102

Cited by 7 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These particular areas show where crack propagation could start when critical material parameters are reached. An analysis of the results can shown whether in particular joints configurations, the MPS did not exceed the critical values, disqualifying one of the lap joints [ 58 , 59 ].…”

Section: Resultsmentioning

confidence: 99%

Numerical and Metallurgical Analysis of Laser Welded, Sealed Lap Joints of S355J2 and 316L Steels under Different Configurations

et al. 2020

View full text Add to dashboard Cite

This paper presents the results of laser welding of dissimilar joints, where low-carbon and stainless steels were welded inthe lap joint configuration. Performed welding of austenitic and ferritic-pearlitic steels included a sealed joint, where only partial penetration of lower material was obtained.The authors presented acomparative study of the joints under different configurations. The welding parameters for the assumed penetration were estimated via anumericalsimulation. Moreover, a stress–strain analysis was performed based on theestablished model. Numerical analysis showed significant differences in joint properties, therefore, further study was conducted. Investigation of the fusion mechanism in the obtained joints wascarried out using electron dispersive spectroscopy (EDS) and metallurgical analysis. The study of the lap joint under different configurations showed considerable dissimilarities in stress–strain distribution and relevant differences in the fusion zone structure. The results showed advantages of using stainless steel as the upper material of a microstructure, and uniform chemical element distribution and stress analysis is considered.

show abstract

Section: Resultsmentioning

confidence: 99%

Numerical and Metallurgical Analysis of Laser Welded, Sealed Lap Joints of S355J2 and 316L Steels under Different Configurations

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Heat treatment and welding methods can potentially render weld metals more prone to brittleness, resulting in fractures. Brittleness at intermediate temperatures, specifically about 750 °C, is caused by grain boundary sliding and phase precipitation [14]. Weldments display many fracture processes, including intergranular fractures caused by second-phase particles at grain boundaries and tensile fractures in the base area.…”

Section: Discussionmentioning

confidence: 99%

Comparison of SMAW and GTAW Welding Properties

Afriansyah,

Ashof,

Naimah

2024

memi

View full text Add to dashboard Cite

Low carbon steel is a type of welding with good formability, machinability, hardenability, and weldability. It can be welded without preheating or postheating processes. Notch strength and sensitivity to weld cracking are the factors that influence the weldability of low carbon steel. SMAW and GTAW welding techniques were applied in this study. In addition to its mechanical properties, parameters and the type of welding process also affected the corrosion of the welded joint. Local corrosion attacks were easier to occur on one than the other welded joint due to significant differences in chemical composition and microstructure. Welded joints in a chlorine-rich environment have a high corrosion rate. In comparison to base metal, low-weld metal triggers high corrosion.

show abstract

“…Under the cryogenic condition, the influence of creep can be completely negligible for heat exchanger failure. And the failure model will mainly belong to the cryogenic brittle [26] or ductile-brittle thermal fatigue damage [27] at this condition.…”

Section: Introductionmentioning

confidence: 99%

Fatigue analysis of brazing structures with fin-plate-side bar in Liquefied Natural Gas (LNG) heat exchangers under cryogenic conditions

Jia

Liu

et al. 2023

STET

View full text Add to dashboard Cite

The purpose of this study is to evaluate the fatigue life of heat exchangers used for Liquefied Natural Gas (LNG) and to ensure its structural safety, the alternating stress of brazing structures under cryogenic conditions was analyzed with a Finite Element Model (FEM). Stress concentrations occurred at the brazed joint with a maximum alternating stress amplitude of 153.45 MPa. The fatigue life of brazed structures during the continuous cool-down and heat-up conditions was evaluated based on the ASME standard and the maximum alternating stress amplitude. Meanwhile, structure parameters have been analyzed for their influence on fatigue life. There are four main structure factors to influence the life cycle: the brazing seam, the fin thickness, the fin distance, and the fin height. The life cycle will decrease with increasing the fin distance, fin height, and brazing seam thickness, and it will increase with increasing the fin thickness. In addition, in order to predict fatigue life, a calculating model has been established based on the main factors. Finally, the fatigue life of brazing structures was also tested by experiment, and the microstructure was also analyzed for the fatigue fracture surface. It is clear that brittle fractures along the brazing seam and ductile fractures at the fin roots should be the primary failure modes. The study provides a base for LNG aluminum heat exchanger design, manufacture, and safe operation.

show abstract

Brittle fracture analysis of Dissimilar Metal Welds between low-alloy steel and stainless steel at low temperatures

Cited by 7 publications

References 8 publications

Numerical and Metallurgical Analysis of Laser Welded, Sealed Lap Joints of S355J2 and 316L Steels under Different Configurations

Numerical and Metallurgical Analysis of Laser Welded, Sealed Lap Joints of S355J2 and 316L Steels under Different Configurations

Comparison of SMAW and GTAW Welding Properties

Fatigue analysis of brazing structures with fin-plate-side bar in Liquefied Natural Gas (LNG) heat exchangers under cryogenic conditions

Contact Info

Product

Resources

About