An­iso­tro­py of in­ter­pha­se bounda­ries in mul­tis­ca­le com­po­si­te growth struc­tu­res - AN­PHA­SES

Pro­ject sum­ma­ry

AN­PHA­SES pro­ject aims at a first-​ever in­te­gra­ted study of pat­tern and tex­tu­re for­ma­ti­on in mul­ti­pha­se hier­ar­chi­cal struc­tu­res dri­ven by an­iso­tro­py of in­ter­pha­se bounda­ries (IB). Eu­tec­tics from the model sys­tem Al-​Al2Cu-Ag2Al were selec­ted; they dis­play par­ti­cu­lar crystal-​crystal ori­en­ta­ti­on re­la­ti­ons­hips with re­mar­kab­ly dif­fe­rent IB pro­per­ties, being ex­cel­lent can­di­da­tes for a sys­te­ma­tic fun­da­men­tal ana­ly­sis of an­iso­tro­py ef­fects on self­or­ga­niza­ti­on du­ring growth and co­ar­se­ning. Molecular-​dynamics com­pu­ta­ti­ons (MD) and phase-​field si­mu­la­ti­ons (PF) will be per­for­med in in­ter­ac­tion with in­no­va­ti­ve in-​situ ex­pe­ri­ments to re­ve­al the ef­fects of IB an­iso­tro­py. Con­clu­si­ve re­sults on the emer­gence of collec­ti­ve order and on com­pe­ti­ti­ve growth of eu­tec­tic grains will be ob­tai­ned. The pro­ject will lead to long awai­ted theo­re­ti­cal amend­ments to the theo­ry of eu­tec­tic growth, to for­ma­li­zed ICME links bet­ween MD and PF and will open the way to knowledge-​based novel micro-​composites struc­tu­res.