First-principles and experimental investigations on ductility/brittleness of intermetallic compounds and joint properties in steel/aluminum laser welding

Li, Tian; Zhou, Dawei; Yan, Youruiling; Peng, Ping; Liu, Jinshui

doi:10.1016/s1003-6326(21)65706-0

Cited by 23 publications

(3 citation statements)

References 58 publications

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“…The high temperature in the rolling process of the hot rolling composite method will lead to a phase transformation of the metal, a change in its microstructure, and the formation of brittle compounds between metals, such as FeAl 2 , FeAl 3 , etc. These brittle compounds are the main factors that cause a decrease in bonding performance [32,33]. To resolve the problems above, the method of inserting an intermediate layer or coating between steel and aluminum is usually adopted [34].…”

Section: Bonding Mechanism Of the Steel/coating/aluminum-clad Plate D...mentioning

confidence: 99%

The Effect of a Coating Sprayed Using Supersonic Flame Coating Technology on the Mechanical Properties and Interface Structure of a Thick Steel/Aluminum Composite Plate during Hot Rolling

Yan,

Wang,

Cui

et al. 2024

Metals

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Given the characteristics of a thick steel/aluminum composite plate, such as its large thickness and the significant differences between its components, it is difficult to prepare using direct rolling. Instead, a thick steel/coating/aluminum composite plate may be successfully prepared by combining supersonic flame coating technology with a hot rolling composite process. In this study, the interface shear strength test, SEM, EDS, and other detection methods were applied to investigate the effects of the reduction rate and coating thickness on the interface structure and mechanical properties. The results show that under the condition of single-pass direct rolling, the micro-interface of steel/aluminum is improved with an increase in the reduction rate, but the bonding strength of the interface remains poor. After adding the coating, the thickness of the diffusion layer and the shear strength increase significantly. When the coating thickness is reduced to 0.1 mm, the deformation coordination and shear strength of the composite plate are further enhanced under the combined action of mechanical interlocking and metallurgical bonding. The tensile shear fracture is mainly located at the steel/coating interface. The interfacial shear strength reaches 66 MPa, which exceeds the requirements of the US military standard MIL-J-24445A (SH) for steel/aluminum shear strength. The research results thus support the use of this new method for the simple and efficient production of thick steel/aluminum composite plates.

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Section: Bonding Mechanism Of the Steel/coating/aluminum-clad Plate D...mentioning

confidence: 99%

The Effect of a Coating Sprayed Using Supersonic Flame Coating Technology on the Mechanical Properties and Interface Structure of a Thick Steel/Aluminum Composite Plate during Hot Rolling

Yan,

Wang,

Cui

et al. 2024

Metals

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“…While limited literature was found in the past, this intermetallic compound has recently seen renewed interest due to the development of additive elaboration methods, such as laser melting [42], and improvements in welding processes [43], were it constitutes an undesirable byproduct. It is known to be hard (1242 HV0.5 [44]), and brittle [45].…”

Section: Fe 2 Timentioning

confidence: 99%

Comparison of thermal diffusion and interfacial reactions for bulk and sputtered titanium on 316L stainless steel

Auger

Cotton

Nouveau

et al. 2023

Materials Chemistry and Physics

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“…However, traditional manual GTAW for repairs makes it challenging to ensure the forming quality of the non-machined areas on the backside of the blades. This limitation significantly affects the casing's performance [4,5].…”

Section: Introductionmentioning

confidence: 99%

The Engine Casing Machining Holes Repairing Based on Vibration Wire Feeding

Pan,

Gao,

et al. 2024

Metals

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The engine casing components operate in high-temperature and high-pressure environments. Process holes are drilled when defects occur. Welding is employed in the repair of process holes as a process for permanently joining materials. The traditional welding method relies on padding, which results in poor back formation of process holes. Additionally, the shape of the process holes imposes high requirements on the size of the droplet transition. The conventional approach of adjusting a welding current makes it difficult to achieve stable droplet transition and precise formation of small holes. It poses a challenge for the robotic welding process. To deal with this problem, the influence of the high-frequency vibration GTAW process on the directional transition of molten droplets is studied. The molten droplet directional transition process is developed. The impact of vibration energy on the molten pool is reduced. Welding repair experiments for process holes are successfully conducted. When the frequency is 3 Hz, the transition of droplets changes from a continuous one-droplet transition to a discontinuous liquid bridge transition. The residual height and mechanical properties of the repaired area are tested. The experimental results indicated that the residual height after dual-side repair is ≤0.7 mm. The X-ray and fluorescent penetration tests have a 100% first-pass qualification rate. The repaired area demonstrates a hardness of 480 HV and a room-temperature tensile strength of 1069 MPa. The repair process requirements for the casing are met.

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First-principles and experimental investigations on ductility/brittleness of intermetallic compounds and joint properties in steel/aluminum laser welding

Cited by 23 publications

References 58 publications

The Effect of a Coating Sprayed Using Supersonic Flame Coating Technology on the Mechanical Properties and Interface Structure of a Thick Steel/Aluminum Composite Plate during Hot Rolling

The Effect of a Coating Sprayed Using Supersonic Flame Coating Technology on the Mechanical Properties and Interface Structure of a Thick Steel/Aluminum Composite Plate during Hot Rolling

Comparison of thermal diffusion and interfacial reactions for bulk and sputtered titanium on 316L stainless steel

The Engine Casing Machining Holes Repairing Based on Vibration Wire Feeding

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