Materials characterization of railgun erosion phenomena

Machado, B.I.; Murr, L. E.; Martínez, E.; Gaytan, Sara M.; Satapathy, S.

doi:10.1016/j.msea.2011.05.051

Cited by 12 publications

(3 citation statements)

References 17 publications

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“…In addition, the deposition exhibited space-time distribution characteristics, with different characteristics observed for varying numbers of shots along the lateral and radial directions of the rail [45]. The deposition layer not only improves the surface roughness of the rail and reduces the electrical contact performance between the A&R, but also creates a solid-state flow regime by dynamic recrystallization at the aluminum/copper interface, which also leads to the erosion-product deposition and damage of the rail, as shown in Figure 7 [46]. In comparison with other forms of damage, the deposition covers almost the entire surface of the rail and occurs throughout the launch process.…”

Section: Coupling Damagementioning

confidence: 99%

Research Progress on Surface Damage and Protection Strategies of Armature–Rail Friction Pair Materials for Electromagnetic Rail Launch

Wang,

Yao,

Zhou

et al. 2024

Materials

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Electromagnetic rail launch technology has attracted increasing attention owing to its advantages in terms of range, firepower, and speed. However, due to electricity-magnetism-heat-force coupling, the surface of the armature–rail friction pair becomes severely damaged, which restricts the development of this technology. A series of studies have been conducted to reduce the damage of the armature–rail friction pair, including an analysis of the damage mechanism and protection strategies. In this study, various types of surface damage were classified into mechanical, electrical, and coupling damages according to their causes. This damage is caused by factors such as mechanical friction, mechanical impact, and electric erosion, either individually or in combination. Then, a detailed investigation of protection strategies for reducing damage is introduced, including material improvement through the use of novel combined deformation and heat treatment processes to achieve high strength and high conductivity, as well as surface treatment technologies such as structural coatings for wear resistance and functional coatings for ablation and melting resistance. Finally, future development prospects of armature–rail friction pair materials are discussed. This study provides a theoretical basis and directions for the development of high-performance materials for the armature–rail friction pair.

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Section: Coupling Damagementioning

confidence: 99%

Research Progress on Surface Damage and Protection Strategies of Armature–Rail Friction Pair Materials for Electromagnetic Rail Launch

Wang,

Yao,

Zhou

et al. 2024

Materials

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“…An Al-Cu-Al erosion surface section is shown removed from the experimental structure. (a) is after Machado et al (2011) for an experimental railgun configuration shown in a cutaway view in Fig. 48b.…”

Section: Materials Issues In Railgun Performancementioning

confidence: 99%

Ballistic and Hypervelocity Impact and Penetration

Murr¹

2015

Handbook of Materials Structures, Properties, Processing and Performance

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“…An Al-Cu-Al erosion surface section is shown removed from the experimental structure. (a) is after Machado et al (2011) Handbook of Materials Structures, Properties, Processing and Performance DOI 10.1007/978-3-319-01905-5_49-1 # Springer International Publishing Switzerland 2014 launch of a heavy armature projectile. Such pulse-power systems also demonstrate extreme material deformation as illustrated schematically in Fig.…”

Section: à2mentioning

confidence: 99%

Ballistic and Hypervelocity Impact and Penetration

Murr

2014

Handbook of Materials Structures, Properties, Processing and Performance

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Fundamentals of plane shock wave loading are described in relation to spherical shock loading which is the characteristic of ballistic and hypervelocity impact and penetration of materials, particularly metals and alloys. The evolution of microstructure with shock pressure and especially shock-wave-induced twinning and the role of stacking-fault free energy in fcc metals and alloys are discussed along with critical shock pressure for twinning and the twinning-microband microstructure transition for oblique shock loading and spherical shock associated with impact crater production and subsequent penetration of targets. This includes the role played by dynamic recrystallization (DRX) in solid-state flow which facilitates crater formation. The penetration of rods in contrast to spherical projectiles in thick targets and plug formation and ejection by adiabatic shear band formation is described along with the fundamental, dynamic recrystallization (DRX) microstructure which characterizes such shear bands. Shaped charge and explosively formed penetrator structures and performance as penetrators in thick target materials are described. The role of DRX in these processes is also discussed. Finally, rail erosion characteristic of DRX in railgun operation is illustrated briefly as a related example of extreme plastic deformation along with the concept of explosively driven magnetic flux generation.

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Materials characterization of railgun erosion phenomena

Cited by 12 publications

References 17 publications

Research Progress on Surface Damage and Protection Strategies of Armature–Rail Friction Pair Materials for Electromagnetic Rail Launch

Research Progress on Surface Damage and Protection Strategies of Armature–Rail Friction Pair Materials for Electromagnetic Rail Launch

Ballistic and Hypervelocity Impact and Penetration

Ballistic and Hypervelocity Impact and Penetration

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