Rigid restraint thermal self-compressing bonding of pure titanium to titanium alloy

Deng, Yunhua; Qiao, Guifang

doi:10.1016/j.matlet.2015.01.093

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…A comparative study on the microstructure and mechanical properties of the Ti6Al4V joints produced by Electron beam welding and rigid restraint TSCB shown that rigid restraint TSCB joint has better combination of strength and ductility than electron beam welded joint [20]. Meanwhile, rigid restraint TSCB also presented the feasibility of joining dissimilar materials [21]. However, the thermal stress-strain process during bonding, which is of very important significance in revealing the mechanism of TSCB, was not analysed systematically.…”

Section: Open Accessmentioning

confidence: 99%

Numerical Study on the Stress–Strain Cycle of Thermal Self-Compressing Bonding

Deng

Qiao

Tao

et al. 2018

Chin. J. Mech. Eng.

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Thermal self-compressing bonding (TSCB) is a new solid-state bonding method pioneered by the authors. With electron beam as the non-melted heat source, previous experimental study performed on titanium alloys has proved the feasibility of TSCB. However, the thermal stress-strain process during bonding, which is of very important significance in revealing the mechanism of TSCB, was not analysed. In this paper, finite element analysis method is adopted to numerically study the thermal elasto-plastic stress-strain cycle of thermal self-compressing bonding. It is found that due to the localized heating, a non-uniform temperature distribution is formed during bonding, with the highest temperature existed on the bond interface. The expansion of high temperature materials adjacent to the bond interface are restrained by surrounding cool materials and rigid restraints, and thus an internal elasto-plastic stress-strain field is developed by itself which makes the bond interface subjected to thermal compressive action. This thermal self-compressing action combined with the high temperature on the bond interface promotes the atom diffusion across the bond interface to produce solid-state joints. Due to the relatively large plastic deformation, rigid restraint TSCB obtains sound joints in relatively short time compared to diffusion bonding.

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Section: Open Accessmentioning

confidence: 99%

Numerical Study on the Stress–Strain Cycle of Thermal Self-Compressing Bonding

Deng

Qiao

Tao

et al. 2018

Chin. J. Mech. Eng.

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“…To promote green and low-carbon development, lightweight has achieved wide development prospects in many industries, and lightweight is a key development direction in the future [1][2][3]. TC4 (Ti-6Al-4V) titanium alloy has high tensile strength, low density, and stable mechanical properties at high temperatures, which is widely used in the structure and fasteners of aircraft bodies [4,5]. Generally, aluminum alloy are the ideal materials for versatile applications.…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance and failure modes of self-piercing riveted joints between AA6061 and solution-treated TC4 alloy

Huang

Jiang

et al. 2023

Mater. Res. Express

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TC4 titanium alloy and AA6061 aluminum alloy are widely used in the transportation industry because of their excellent mechanical properties and lightweight. In this work, the TC4 titanium alloy was solution heat treated between 800℃ and 990℃ for 1 hour, and water cooled to room temperature. The riveting and tensile tests at room temperature were conducted to evaluate the joint performance. The tensile strength and failure morphology were used to discuss the mechanical performance of joints. Solution heat treatment significantly improves the elongation, mechanical performance, and hardness of TC4 titanium alloy. Compared with the as-received material, the elongation of the treated TC4 titanium alloy is increased by 13% at the solution temperature of 900℃, the tensile strength was added by 175 MPa at 930℃, and the hardness was significantly increased. The optimal performance of the TC4 titanium alloy can be obtained at 930℃. The tensile strength of the joint with the TC4 alloy solution heat treated at 930℃ is the highest of all joints. When the TC4 alloy was solution treated between 800℃ and 850℃, the rivets were pulled from the AA6061. While at 900℃ and 930℃, the AA6061 sheet was broken at the rivet. At 960℃ and 990℃, the TC4 sheet was broken near the rivet. The crack size of TC4 titanium alloy gradually decreases from the rivet outward, and the crack spreads around the rivet. Severe friction can be found, which causes the peeling of the lower plate AA6061 alloy. The breaks of TC4 alloys were the plastic broken. The failure morphology of the TC4 alloy sheet is different under different solution heat treatment temperatures.

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A Review on High‐Strength Titanium Alloys: Microstructure, Strengthening, and Properties

2019

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The authors review the recent advances in the development of high‐strength titanium alloys. First, they summarize conventional strengthening approaches and their mechanisms, thecorresponding microstructures, and the optimized mechanical properties. Subsequently, various strengthening strategies for high‐strength titanium alloys are discussed. Finally, examples of the successful development of high‐strength titanium alloys based on amorphous crystallization via solid and semi‐solid sintering are presented. The review of the interrelation between the microstructure, the strengthening, and the properties may provide significant insight into achieving novel high‐strength titanium alloys.

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Rigid restraint thermal self-compressing bonding of pure titanium to titanium alloy

Cited by 5 publications

References 9 publications

Numerical Study on the Stress–Strain Cycle of Thermal Self-Compressing Bonding

Numerical Study on the Stress–Strain Cycle of Thermal Self-Compressing Bonding

Mechanical performance and failure modes of self-piercing riveted joints between AA6061 and solution-treated TC4 alloy

A Review on High‐Strength Titanium Alloys: Microstructure, Strengthening, and Properties

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