The Application of Diffusion Welding to Aircraft Titanium Alloys

Ohsumi, Makoto; Kiyotou, Shin-ichiro; Sakamoto, Mitsumasa

doi:10.2355/isijinternational1966.25.513

Cited by 10 publications

(2 citation statements)

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“…Over the past few decades, aero engines, gas turbine blades, and nuclear components exposed to high temperatures have developed complex configurations to increase efficiency. Owing to the limitations of machining hollow interiors, diffusion welding has been studied for joining the components [1][2][3][4][5]. Diffusion welding is a method for fabricating a monolithic joint through the formation of welds at the atomic level.…”

Section: Introductionmentioning

confidence: 99%

Diffusion Welding of Surface Treated Alloy 800H

Hwang,

Sa,

Kim

et al. 2023

Metals

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Diffusion welding of heat-resistant alloys has attracted interest in the manufacturing of components with complex configurations. Controlling secondary precipitates along the interface is necessary to enhance the quality of the diffusion welding. Surface treatment to increase the solubility product (Ksp) of Ti-rich carbide is proposed to accomplish such an enhancement. The reduction of secondary precipitates along the interface induced grain boundary migration across the interface. The chemical compositions at/near the interface satisfied the material specifications. The mechanical properties of the diffusion weldment were similar to those of Alloy 800H that underwent the same thermo-mechanical processes in the range of 25–700 °C. At 25 °C, the tensile strength was 553 MPa, which satisfied the minimum specified tensile strength described in ASTM B: 409-06. The location of failure was random in the gauge section, and dimples, the evidence of the macroscopic plastic deformation, were observed on the fracture surface.

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Section: Introductionmentioning

confidence: 99%

Diffusion Welding of Surface Treated Alloy 800H

Hwang,

Sa,

Kim

et al. 2023

Metals

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“…A weldment needs no subsequent machining as the process leaves no slag, flash or scale, nor is there any associated loss of metals. Diffusion bonding has contributed much to the advances in the development of aircraft, missile, electronics, nuclear, aerospace, chemicals and gas fields [3].…”

Section: Introductionmentioning

confidence: 99%