Investigation of microstructure evolution process in circular shaped oscillating laser welding of Inconel 718 superalloy

Ai, Yuewei; Yan, Yachao; Dong, Guangyu; Han, Soohee

doi:10.1016/j.ijheatmasstransfer.2023.124522

Cited by 20 publications

(1 citation statement)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The current methods of repair of the main elements of hydraulic turbines are outdated and have certain disadvantages. These disadvantages are long terms, high cost and, in addition, a decrease in the runner reliability due to metal structure disturbances [21,22] (the reconditioned part does not have the same parameters as the original metal), internal stresses, and mechanical and hydraulic imbalance. Restoring the operating geometry of the runner and guide vanes remains a challenge year after year, while costs are increasing financially, materially, and over time.…”

Section: Introductionmentioning

confidence: 99%

Studies of the Solid Particle Erosion Resistance of 30 L Steel with Different Types of Surface Modification

Tkhabisimov,

Mednikov,

Zilova

2023

Metals

View full text Add to dashboard Cite

Earlier studies have shown that 30 L steel, used for the manufacture of hydraulic machinery equipment elements, has greater resistance to cavitation wear than 20 GL steel. This paper presents the results of experimental studies of the solid particle erosion resistance of 30 L structural steel samples with different surface modifications based on nitriding and boriding processes. The characteristics of the modified near-surface layers were determined. The results of the solid particle erosion resistance tests carried out according to the ASTM G76-13 standard are presented. The research results demonstrated that boriding processes worsen the solid particle erosion resistance of 30 L steel at flow impact angles of 30° and 90°. All the considered variants of surface nitriding at an impact angle of 90° do not worsen the solid particle erosion resistance of 30 L steel samples, while at an impact angle of 30°, they increase the solid particle erosion resistance by at least 10–20%.

show abstract

Section: Introductionmentioning

confidence: 99%