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Considering the characteristics of roll-forming, springback and microstructure changes during the welding process, the longitudinal residual stresses (LRS) of cold-formed square hollow sections (CFSHS) in the roll-forming and high-energy welding processes was simulated with finite element method. It is concluded that LRS of CFSHS at the outer and inner surfaces are basically equal in value and opposite...
Microstructural evolution and phase transformation induced by different heat treatments of the hypereutectic aluminium-silicon alloy, Al-25Si-5Fe-3Cu (wt%, signed as 3C), fabricated by traditional cast (TC) and spray forming (SF) processes, were investigated by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM) combined with energy dispersive X-ray spectroscopy and X-ray...
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