Yan Ma

TL;DR: In this paper, the development history and applications of Al-Li alloys over the last few years are reviewed, and the main issue of anisotropic behavior of all the alloys is discussed.

TL;DR: In this article, the influence of sample orientation and strain rates on the tensile properties and anisotropy behavior of Al-Li alloys sheet through quasi-static and dynamic uniaxial tensile tests was investigated.

TL;DR: In this article, the Johnson-Cook constitutive model was modified to consider the effects of both strain and strain rates on the strain hardening coefficient, and the results obtained from the improved Johnson-cook model are in remarkable accordance with those obtained from experimental work.

TL;DR: In this paper, an impact hydroforming (IHF) is proposed, in which the sheet is formed with high-pressure pulse combining hydroforming and high strain rate (HSR) forming, an IHF bulge test setup was designed, 5A06 aluminium sheet was tested with strain rate of 2.5 × 104 s−1 showing remarkable thickness strain increase compared with quasi-static condition.

TL;DR: In this paper, the authors developed a technology by combination of hydroforming with moving dies similar to the forging process, known as a hydroforging technology, to avoid thinning, wrinkling, and bursting due to unreasonable selection of the internal pressure.