Inkqubo yoLungiselelo lweeSampulu zeMetallographic zeAluminiyam kunye neeAluminiyam kunye nezixhobo zoLungiselelo lweeSampulu zeMetallographic

Iimveliso ze-aluminium kunye ne-aluminium zisetyenziswa kakhulu kwimveliso yemizi-mveliso, kwaye amasimi ahlukeneyo okusetyenziswa aneemfuno ezahlukeneyo kakhulu zesakhiwo se-microstructure seemveliso ze-aluminium. Umzekelo, kwicandelo le-aerospace, umgangatho we-AMS 2482 ubeka iimfuno ezicacileyo zobukhulu bengqolowa kunye nobukhulu bezinto ezisetyenziswayo; kwii-radiators zeemoto, kukho iimfuneko ezingqongqo ze-porosity yezixhobo ze-aluminium alloy. Injongo yohlalutyo lwe-metallographic ke ngoko kukufumanisa ukuba imveliso iyafaneleka na ngokuhlalutya isakhiwo sayo se-microstructure.

Uhlalutyo lweMetallographic lusebenzisa imakroskopu ebonakalayo ukujonga nokurekhodaiimpawu zesakhiwo esincinci se-aluminium kunye ne-aluminium alloys, ezifana nobukhulu beenkozo, imo, kunye nokufana, ukuze kuchongwe amandla kunye ne-plasticity yezinto. Ingasetyenziselwa ukuhlalutya ubungakanani, uxinano, uhlobo, kunye nezinye iimpawu zezigaba zesibini. Ngexesha lenkqubo yokujonga, kukho iimfuno zokugqitywa komphezulu kunye nokuba sithe tyaba kwento yokusebenza. Ngokwesiqhelo, ukulungiswa kwesampulu ye-metallographic kuyadingeka ngaphambi kovavanyo lohlalutyo lwe-metallographic ukususa umonakalo womphezulu, ukutyhila isakhiwo sokwenyani se-metallographic yento yokusebenza, kunye nokuqinisekisa ukuba idatha yohlalutyo olulandelayo ichanekile ngakumbi.

Amanyathelo okulungiselela isampuli yohlalutyo lwe-metallographic lweemveliso ze-aluminium alloy ngokubanzi aquka ukusika i-metallographic, ukufakela, ukugaya kunye nokupolisha, kunye nokugqwala. Umatshini wokusika i-metallographic uyafuneka kwinkqubo yokuthatha isampuli, oxhotyiswe ngenkqubo yokupholisa amanzi ukuthintela ukuguquka kwemveliso, ukutsha komphezulu, kunye nokonakala kwesakhiwo ngexesha lokusika.

Kwinkqubo yokufaka, ukufaka okushushu okanye ukufaka okubandayo kunokukhethwa njengoko kufuneka; ukufaka okushushu kusetyenziswa kakhulu kwiimveliso ze-aluminium eziqhelekileyo. Ngexesha lenkqubo yokusila nokupholisha, ekubeni iimveliso ze-aluminium zinobunzima obuphantsi, ukusebenzisa iphepha lesanti elifanelekileyo kunye nelaphu lokupholisha kunye nolwelo lokupholisha kunokunceda ekufezekiseni umphezulu wesampuli ongcono de kufunyanwe isipili.

Okokugqibela, kwinkqubo yokubola, kucetyiswa ukusebenzisa isisombululo esithambileyo se-alkaline corrosive ukuze kuthintelwe ukonakala kwesakhiwo se-microstructure. Emva kokubola, isampuli ingafakwa phantsi kwe-microscope ukuze kuhlalutywe i-metallographic.