Microstructural evolution during superplastic bulge forming of Ti–6Al–4V alloy

Superplastic forming and diffusion bonding for honeycomb structure of Ti–6Al–4V alloy

“…The process takes advantages of two unusual properties of titanium alloys, superplasticity and diffusion bondability, and results in significant cost and weight saving when compared to conventional titanium manufacturing methods [4][5][6][7][8][9]. Typical applications include parts formed and bonded into hollow sections starting with two or more flat titanium sheets resulting in complex sandwich structures and sheets formed with preplaced bonded details replacing multiple piece assemblies and machined parts.…”

Low temperature superplastic gas pressure forming of electrodeposited Ni/SiCp nanocomposites

“…In this paper, an analytical model based on the assumption of Lee et al [27] is also used to predict thickness distribution of the as-deposited Ni/SiC p nanocomposite, and compared with the experimental and the FEM results. The model assumes that the thickness distribution along the dome follows an ellipse profile, which is able to model the distribution where RBH is larger than 1.…”

“…Investigations on the forming behavior and structural instability of nanocrystalline materials under biaxial stress states are still lacking. Superplastic bulging is a versatile forming process applied in industry to produce thin-walled net-shaped articles, and is commonly used in the laboratory to assess superplastic formability of metallic alloys, ceramics and composites under biaxial stress states [21][22][23][24][25][26][27][28]. In this paper, an attempt has been made to examine the superplastic gas pressure forming behavior and microstructural changes of a Ni/SiC p nanocomposite at different forming temperatures and die diameters.…”

Experimental and Numerical Investigation of Cold Bulge Forming of Titanium Alloy Ti55

“…The deformation measurements showed that the experimental and numerical results were in good agreement. In 1998, Lee et al [5] have made an analytical model reflecting the microstructural evolution on the basis of Dutta and Mukherjee's work, and used this model to the superplastic bulge forming of Ti-6Al-4V alloy. In their work, bulge forming of fine grain (2.5 mm) Ti-6Al-4V alloy sheets was conducted at 900˚C, at three strain rates.…”