Studies on Microstructure and Mechanical Properties of Weldments Produced in 12 mm Thick Naval Grade High Strength Low Alloy Steel for Sub-Zero Application by Single and Double Pass Hybrid Laser Arc Welding

Kannan, Ramesh; Arivazhagan, N.; Rao, M. Nageswara; Reddy, G. Madhusudhan; Prabhakar, K. V. Phani; Gadhe, Padmanmabham

doi:10.1007/s11665-021-06403-x

Cited by 5 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…LHW concurrently employs the welding arc and the laser power, in a collective interaction zone. 90 The synergic effects of the laser beam and electric arc in the same weld pool result in an increased welding speed, depth of penetration, and overall process stability. 91 The most commonly used hybrid welding is laser-GMAW.…”

Section: Different Welding Operationsmentioning

confidence: 99%

Current research and developments in welding of 18% nickel maraging steel

Jose

Manoharan

Natarajan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

Self Cite

View full text Add to dashboard Cite

Maraging steels are low-carbon, high nickel-containing precipitation-hardened steels with an excellent combination of strength and toughness. Their outstanding performance gained the increasing attention of scientists, industrialists, and end-users over the past six decades. The present global rapid growth in the consumption of maraging steel, particularly in aerospace, defense and other engineering applications, involves the fabrication of high-performance welded joints. Maraging steels offer relatively high flexibility from the welding point of view. Gas tungsten arc welding is the most preferred welding process for maraging steels. As the need for increased productivity is growing worldwide in many fields, such as aerospace, mechanical engineering, etc., where thick sections are used, issues like heat input, inter-pass temperature, cooling rate, and the selection of weld consumables become important for achieving defect-free joints. Many advanced techniques like plasma, laser, and hybrid welding processes are being developed to fulfil the requirements for joining higher thickness products without distortion. The major problem associated with welding maraging steel is the formation of reverted austenite in the fusion zone and the heat-affected zone. This problem can be mitigated by choosing optimized filler wires and the proper selection of post-weld heat treatment for the weldments. This paper extensively reviews the influence of welding processes and conditions on the microstructure and mechanical properties of maraging steels with due emphasis to structure–property relationships.

show abstract

Section: Different Welding Operationsmentioning

confidence: 99%

Current research and developments in welding of 18% nickel maraging steel

Jose

Manoharan

Natarajan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

Self Cite

View full text Add to dashboard Cite

show abstract

“…The processes give rise to the generation of residual stresses, which may adversely affect the mechanical properties (strength and toughness) and negatively impact the safe operating envelope, performance, and service life of marine structures. [4][5][6][7][8][9] During the welding of thick DMR 249 steel by the abovementioned methods, high heat input occurred on the weldment due to the increased number of passes, which could affect the properties of the weldments. 9 To address these challenges, it is necessary to develop acceptable welding techniques.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6][7][8][9] During the welding of thick DMR 249 steel by the abovementioned methods, high heat input occurred on the weldment due to the increased number of passes, which could affect the properties of the weldments. 9 To address these challenges, it is necessary to develop acceptable welding techniques. Pulsed current welding technique was used to improve strength, toughness, and corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Characterization of weld joints produced by continuous wave and double pulse gas metal arc welding in naval grade high-strength low-alloy steel

Venkateshkannan

Natarajan

Rao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

The current research examines gas metal arc welding (GMAW) joints generated in naval grade high-strength low-alloy (HSLA) steel using both continuous wave GMAW (CW-GMAW) and double pulse GMAW (DP-GMAW). The joint was created in four passes with DP-GMAW, whereas CW-GMAW required eight passes. Weld joints were characterized using various techniques, including optical microscopy (OM), scanning electron microscopy (SEM), residual stress analysis, and mechanical evaluation. The mechanical evaluation consisted of microhardness, impact, and tensile tests. The Charpy V-notch (CVN) impact test was performed at room temperature and −60°C. For both CW-GMAW and DP-GMAW, the heat-affected zone and the fusion zone were harder than the base metal. The fracture occurred in the base metal region in all the tensile test specimens containing the weld joints. The DP-GMAW joints showed higher impact toughness at both room temperature and −60°C. In comparison to the fusion zone of the CW-GMAW joint, the fusion zone of the DP-GMAW joint had a greater volume fraction of acicular ferrite, a finer grain size, and a higher percentage of high-angle grain boundaries. These factors have contributed, it is believed, to the higher impact toughness of the DP-GMAW joint.

show abstract

Microstructural, Strength and Residual Stress Studies on Single- and Double-Side Single-Pass Submerged Arc Welding of 9Cr–1Mo–V Steel Plate

Suman

Biswas

2022

J. Inst. Eng. India Ser. C

View full text Add to dashboard Cite

Studies on Microstructure and Mechanical Properties of Weldments Produced in 12 mm Thick Naval Grade High Strength Low Alloy Steel for Sub-Zero Application by Single and Double Pass Hybrid Laser Arc Welding

Cited by 5 publications

References 33 publications

Current research and developments in welding of 18% nickel maraging steel

Current research and developments in welding of 18% nickel maraging steel

Characterization of weld joints produced by continuous wave and double pulse gas metal arc welding in naval grade high-strength low-alloy steel

Microstructural, Strength and Residual Stress Studies on Single- and Double-Side Single-Pass Submerged Arc Welding of 9Cr–1Mo–V Steel Plate

Contact Info

Product

Resources

About