Effect of grain boundary precipitation on the mechanical integrity of EBW joints of Inconel 625

Mulimani, Sachet Sangamesh; Ankit, Kumar; Kothari, Ankita; Ganguly, Saibal

doi:10.1016/j.msea.2021.140926

Cited by 23 publications

(6 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Resultsmentioning

confidence: 99%

“…This is attributed to the occurrence of scarce fine Laves particles as the brittle phase and subsistence of MC system carbides, which is also consistent with the topography of grooves parallel to the sliding direction and the inference of more severe abrasive wear caused by carbides in the deposited metal. 18,36 To analyse the wear mechanism in depth, EBSD was employed to evaluate local plastic deformation on the surface of flank wear-land. Local plastic deformation was assessed by calculating the kernel average misorientation (KAM) extracted from the cross-section of worn cutting edges.…”

Section: Wear Mechanism Analysismentioning

confidence: 99%

See 1 more Smart Citation

Wear prediction of BTA drill based on finite element method for drilling laminated Inconel 625 deposited metal and FeCr alloy material

Guan

Lü

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

This study investigated the wear prediction of BTA drills for laminated Inconel 625 deposited metal and FeCr alloy materials using 3D finite element modelling. High interface temperature owing to increased cutting speed enhances the abrasive wear mechanism of Inconel 625, while FeCr alloy exhibits a predominantly adhesive wear mechanism. The interface temperature and normal pressure required as inputs for tool-wear prediction were obtained using response surface methodology (RSM), which was developed by combining the central composite design (CCD) with finite element method simulation. This approach significantly improved the computational efficiency and provides accurate predictions with the calibrated friction model. A modified Usui wear model was established considering the sensitivity of temperature to wear rate for Inconel 625. A significant improvement in prediction accuracy was observed compared with the original Usui equation. The proposed tool-wear prediction model was validated through experimental tests. The maximum predicted flank wear width deviations for the outer and intermediate edges of BTA drill were 2% and 7%, respectively. The results demonstrate the effectiveness of the proposed BTA drill wear-prediction approach for laminated materials with different wear characteristics, providing theoretical guidance for cutting-parameter optimisation and tool-replacement strategies.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Wear Mechanism Analysismentioning

confidence: 99%

Wear prediction of BTA drill based on finite element method for drilling laminated Inconel 625 deposited metal and FeCr alloy material

Guan

Lü

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

show abstract

“…Moreover, the aging treatment promotes the precipitation of M 23 C 6 carbide at grain boundaries. Previous studies [30][31][32] have reported that the formation of M 23 C 6 carbide at the grain boundaries had a detrimental influence on the mechanical properties, particularly the elongation, of the alloy.…”

Section: Tensile Propertiesmentioning

confidence: 97%

The Effect of Dendritic Structure and Secondary Phases on the Fatigue Behavior of ERNiCrMo-3 Weld Metal

Zhang,

Ji,

et al. 2023

Preprint

View full text Add to dashboard Cite

The effect of dendritic structure and secondary phases on the fatigue crack propagation mechanism of ERNiCrMo-3 weld metal was investigated in the present study. Element segregation in the weld metal caused severe lattice distortion in the interdendritic region, which led to the instability of crack propagation rates, resulting in considerable differences in mechanical properties between the dendrite core and interdendritic region. The limited plastic deformation capability of the interdendritic region caused the contraction of the local plastic deformation zone at the crack tip, which increased stress concentration and accelerated crack propagation. Meanwhile, element segregation promoted the precipitation of a large number of Laves pahse in the interdendritic region. The interaction between dislocations and Laves phase was enhanced as the stress increased, which generated micro-voids and provided fast channels for fatigue crack propagation. Post-weld heat treatment weakened the non-uniformity of the microstructure and the fatigue crack showed a stable propagation trend. Moreover, the dissolution of Laves phase and the precipitation of γ” enhanced the fatigue property of the weld metal.

show abstract

“…A hardness profile is a good tool to evaluate the hardness of the entire joint [32,33]. Five measurements were made for each zone, two of which were rejected (min/max) while maintaining the appropriate distance interval of four times the indenter size to avoid the effects of localized strain hardening in the vicinity of the indentation.…”

Section: Hardnessmentioning

confidence: 99%

Microstructure and Properties of Dissimilar Joints of AISI 430 Steel with Inconel 625 Obtained by Electron Beam Welding

Dziekońska¹,

Jonda²,

Sroka³

et al. 2022

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

Electron beam welding (EBM) is a high-energy density fusion process where joint is bombarded to be welded with strongly focused beam of electrons. This method is often used for advanced materials and complex, critical parts, like turbine rotors, but it can also be used for many simpler processes involving large production runs. It is very suitable for butt welding materials of diff erent thicknesses. The aim of this work was to study the microstructure, hardness, and electrochemical corrosion behavior between the dissimilar welds were investigated. Electron Beam Welding of dissimilar steel alloys Inconel 625 and AISI 430 was studied. In welding process there was used only welded materials without fi lling material. Results showed the microstructure of the weld solidifi ed in dendritic morphology. The microstructure of fusion zone showed that dendrites grew in diff erent directions for each grain. The dendrites and columnar grains are mainly exposed to the fusion boundary with some equiaxed grains. The hardness of the overall joint was non-uniform. The highest hardness of the HAZ/Inconel 625 (the heat-aff ected zone) was 258 HV, and the lowest weld zone hardness was 178 HV. The decrease in weld hardness may be due to the linear welding energy, which led to grain growth and excessive cooling. HAZ/AISI 430 steel has the lowest current density and the highest corrosion potential. Steel has a more negative corrosion potential and a lower corrosion current density than joints, likely due to higher levels of chromium. In this study, a metallographic investigation of the joints revealed no defects such as microcracks or pores. The melting temperatures of the two materials were quite diff erent, but with the help of gravity, stainless steel acts as a permanent joint, like a rivet.

show abstract

Effect of grain boundary precipitation on the mechanical integrity of EBW joints of Inconel 625

Cited by 23 publications

References 23 publications

Wear prediction of BTA drill based on finite element method for drilling laminated Inconel 625 deposited metal and FeCr alloy material

Wear prediction of BTA drill based on finite element method for drilling laminated Inconel 625 deposited metal and FeCr alloy material

The Effect of Dendritic Structure and Secondary Phases on the Fatigue Behavior of ERNiCrMo-3 Weld Metal

Microstructure and Properties of Dissimilar Joints of AISI 430 Steel with Inconel 625 Obtained by Electron Beam Welding

Contact Info

Product

Resources

About