Effect of friction stir processing on superplastic behavior of Zn-22Al alloy

Mofidi, Hamed; Nishihara, Tadashi

doi:10.1533/978-1-78242-164-1.383

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…The temperature in point A is the temperature for the top of the bottom layer of Zn-22Al superplastic alloy which was about 270 °C at the maximum. This temperature is close to that having the highest m-value (strain rate sensitivity index) and superplasticity for this alloy [9]. As mentioned earlier, temperature plays an important role in the FSF process.…”

Section: Rs Rs Rs Rssupporting

confidence: 78%

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Production of a Superplastic Vibration-Damping Steel Sheet Composite Using Friction Stir Forming

Tabatabaei

Hara

Nishihara

2016

MSF

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This study proposes a novel method of manufacturing composite vibration-damping steel sheet with Zn-22Al superplastic alloy using friction stir forming (FSF). Trials of mechanical interlocking of steel sheet with Zn-22Al superplastic alloy using FSF were carried out on a modified milling machine. The results are discussed in terms of residual microstructures and mechanical properties. We concluded that cladding steel sheet with Zn-22Al superplastic alloy using FSF results in superplastic forming and diffusion bonding.

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confidence: 78%

“…The FSF system and FSF tool are same as our previous study [9]. Shoulder part of the FSF tool with a diameter of 15mm, is made of Inconel 625, while a high-speed steel forming tap (M6×1) is used as the probe part of the tool.…”

Section: Cumentioning

confidence: 99%

Production of a Superplastic Vibration-Damping Steel Sheet Composite Using Friction Stir Forming

Tabatabaei

Hara

Nishihara

2016

MSF

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“…Superplastic solid-state welding uses this superplasticity to achieve the joining of the material [107]. Solid-state welding based on superplastic alloys can be classified into superplastic friction welding [108,109], superplastic pressure welding [110,111], and superplastic forming/diffusion bonding (SPF/DB) [112,113].…”

Section: Superplastic Solid-state Weldingmentioning

confidence: 99%

Research Progress of Aluminum Alloy Welding/Plastic Deformation Composite Forming Technology in Achieving High-Strength Joints

Song,

Wang,

Fan

et al. 2023

Materials

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Fusion welding causes joint deterioration when joining aluminum alloys, which limits the use of aluminum alloy components in high-end equipment. This paper focuses on an overview of how to achieve high-strength aluminum alloy welded joints using welding/plastic deformation composite forming technology. The current technology is summarized into two categories: plastic deformation welding and plastic deformation strengthening. Plastic deformation welding includes friction stir welding, friction welding, diffusion welding, superplastic solid-state welding, explosive welding, and electromagnetic pulse welding. Plastic deformation strengthening refers to the application of plastic deformation to the weld seam or heat-affected zone, or even the whole joint, after welding or during welding, including physical surface modification and large-scale plastic deformation technology. Important processing parameters of plastic deformation welding and their effects on weld quality are discussed, and the microstructure is described. The effect of plastic deformation strengthening technology on the microstructure and performance evolution, including the hardness, tensile strength, fatigue property, residual stress, and hot cracking of aluminum alloy welded joints, and its evolution mechanism are systematically analyzed. Finally, this paper discusses the future development of plastic deformation strengthening technology and anticipates growing interest in this research area.

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“…Finer grain structures achieved within the stir zone, suggest the possibility of achieving a high superplasticity (strain rate sensitivity exponent) at a lower temperature and higher strain rate. Author has previously demonstrated the improvement of superplasticity properties for friction stir processed Zn-22Al superplastic alloy [8,9]. However, more detailed experiments are needed to demonstrate and support this statement for present study.…”

Section: Discussionmentioning

confidence: 65%

“…Initial results for the FSP of superplastic Zn-22Al eutectoid alloy has been reported, which demonstrate that FSP produces a very finer grain structure within the stir zone. This improves the mechanical and superplastic properties of Zn-22Al alloy [8,9]. However, there are very few studies about friction stir processing of SP-700 titanium alloy.…”

Section: Introductionmentioning

confidence: 99%

Friction Stir Processing Trials of SP-700 (Ti-4.5Al-3V-2Fe-2Mo) Titanium Alloy

Tabatabaei

Okuyama

Nishihara

et al. 2018

DDF

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Superplastic titanium alloy (SP-700 with nominal composition of Ti-4.5Al-3V-2Fe-2Mo) an alpha-beta alloy, with a beta-rich fine microstructure and excellent superplastic formability has wide applications in aerospace components, metal wood heads, tools, automotive components. However, very little information is available regarding friction stir processing (FSP) characteristics of this alloy. This study discusses the trials of FSP of this highly formable titanium alloy. Results are discussed in terms of hardness and temperature measurements and microstructural observations.

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Effect of friction stir processing on superplastic behavior of Zn-22Al alloy

Cited by 5 publications

References 3 publications

Production of a Superplastic Vibration-Damping Steel Sheet Composite Using Friction Stir Forming

Production of a Superplastic Vibration-Damping Steel Sheet Composite Using Friction Stir Forming

Research Progress of Aluminum Alloy Welding/Plastic Deformation Composite Forming Technology in Achieving High-Strength Joints

Friction Stir Processing Trials of SP-700 (Ti-4.5Al-3V-2Fe-2Mo) Titanium Alloy

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