Experimental investigation of Inconel welded joints formed by pulsed micro plasma welding

Baruah, Mayuri; Prasad, Somuri V.; Tudu, Nehem; Murmu, Binay Kumar; Singh, Subhash

doi:10.1016/j.matpr.2020.06.604

Cited by 2 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…IN625 is a Ni superalloy that is in high demand in various industries such as aerospace, nuclear and marine because it has the capability to endure high strength and exhibit better corrosion resistivity even at high temperatures (Baruah et al , 2020; Pereira et al , 2018; Zhong et al , 2019). Major constituents of IN625 are Ni, Cr and Fe, which are also present in SS304L in significant percentages and SS304L has a similar application to that of IN625 (Wang et al , 2016).…”

Section: Introductionmentioning

confidence: 99%

Comparison of properties at the interface of deposited IN625 and mixture of IN625 SS304L by laser directed energy deposition and SS304L substrate

Tudu

Baruah

Prasad

2022

RPJ

Self Cite

View full text Add to dashboard Cite

Purpose Prior to manufacturing, designing plays a vital role in the selection of materials and other design parameters. Therefore, during the deposition of materials, substrate materials provide support and affect the microstructure of the deposits, which may not be desirable in the manufactured product. Hence, the main purpose of the study is to analyse the behaviour of the microstructure at the interface of deposited material and substrate. Design/methodology/approach In this study, two blocks of Inconel 625 (IN625) and Stainless steel 304L (SS304L) metal powders were deposited on an SS304L substrate using laser directed energy deposition (DED) technique. Deposited blocks comprised 50% IN625 + 50% SS304L or 100% IN625. After deposition, microstructural behaviour at the interface of the deposits and substrates was analysed using different tests such as optical microscopy (OM), microhardness testing, X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). An improvement in microstructure was proposed by performing heat treatment of the deposited sample. Findings Formation of martensite and precipitates at the interface of the deposit and substrate was observed. Formation of martensite and precipitates such as α, carbide and δ phases were observed in OM and SEM images. Due to the formation of these phases, interface regions showed a peak in the hardness graphs. Post-heat treatment of the samples was one of the solutions to resolve these issues. Originality/value This paper suggests the formation of a heat-affected zone (HAZ) at the interface of the deposit and substrate, which may negatively affect the overall utility of the deposited part. The properties of the HAZ were investigated. To suppress these detrimental effects, post-heat treatment of the deposited sample was performed, and the samples were further analysed. The post-heat-treated samples exhibited as reduction in HAZ thickness and had more uniform hardness throughout the cross-section compared with the untreated samples.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparison of properties at the interface of deposited IN625 and mixture of IN625 SS304L by laser directed energy deposition and SS304L substrate

Tudu

Baruah

Prasad

2022

RPJ

Self Cite

View full text Add to dashboard Cite

show abstract

Parametric Analysis of Process Loop and Scanning Line Distance in Laser Cleaning of Corrosion on Boron Steel

Azman,

Halil,

Muhammad

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

This project is a comprehensive exploration conducted within the Laser Micro Cleaning Lab at the Pekan Campus of University Malaysia Pahang. The objective of the project is to delve into laser material processing, particularly in the context of laser micro cleaning. The undertaking involves a meticulous research approach, drawing insights from authoritative and relevant journal articles sourced primarily from online platforms. The primary goal of this investigation is twofold: firstly, to scrutinize the effects of mark loops on corrosion depth in boron steel, and secondly, to examine how alterations in line distance influence the surface roughness during corrosion laser cleaning. The study will encompass a diverse range of laser cleaning parameters and materials, facilitating a comprehensive assessment of their impact on both laser mark loops and line distances. To delve deeper, a sophisticated 3D microscope analysis will be employed, focusing on evaluating corrosion depth and surface roughness. The anticipated outcomes of this research hold the promise of invaluable insights, offering optimized strategies for enhancing laser cleaning processes and achieving more efficient results.

show abstract

Experimental investigation of Inconel welded joints formed by pulsed micro plasma welding

Cited by 2 publications

References 14 publications

Comparison of properties at the interface of deposited IN625 and mixture of IN625 SS304L by laser directed energy deposition and SS304L substrate

Comparison of properties at the interface of deposited IN625 and mixture of IN625 SS304L by laser directed energy deposition and SS304L substrate

Parametric Analysis of Process Loop and Scanning Line Distance in Laser Cleaning of Corrosion on Boron Steel

Contact Info

Product

Resources

About