Aluminium profiles muaj siab plasticity thiab tsis tshua muaj kev tiv thaiv ntawm qhov kub thiab txias, thiab nrog ceev atomic diffusion thiab ua tiav recrystallization, qhov no pab txhim kho lawv cov qauv. Thaum compressive kev nyuaj siab dominates nyob rau hauv peb cov lus qhia, kub deformation muaj peev xwm feem ntau zoo hloov lub as-cast qauv ntawm txhuas profiles. Nrog rau qhov zoo ntawm deformation, cov qauv zoo li-cam khwb cia tuaj yeem hloov kho cov txiaj ntsig hauv qab no.
(1) Feem ntau, kub deformation yog ua tiav los ntawm ntau qhov kev rov qab deformation. Hauv txhua kis, hardening thiab softening tshwm sim ib txhij. Nyob rau hauv industrial aluminium profiles, deformation lov li coarse columnar nplej. Nws kuj pab kho qee qhov tawg me me.
(2) Vim tias cov nyhuv ntawm hydrostatic siab nyob rau hauv lub xeev kev nyuaj siab, nws muaj peev xwm txhawb lub vuam ntawm npuas nyob rau hauv lub as-cast qauv, txo shrinkage kab noj hniav, compact looseness, thiab tig mus rau hauv ib tug denser qauv.
(3) Nrog lub zog atomic thermal zog ntawm qhov kub thiab txias, nyob rau hauv kev ntxhov siab thiab pab los ntawm atomic diffusion thiab interdiffusion, nws yuav pab txo qhov tsis sib xws ntawm cov tshuaj muaj pes tsawg leeg ntawm ingot.
Through hot deformation, the ingot structure improves into a deformed structure, resulting in higher density, uniform fine equiaxed grains, and more consistent chemical composition, which significantly enhances both plasticity and strength.
