Ukuba buthathaka kweiingxube ze-magnesiumubukhulu becala kuxhomekeke kwizinto ezintathu: ingxubevange eqinileyo ubushushu ukunyibilika, izinga deformation kunye nobukhulu eziziinkozo, ngoko ke, isifundo magnesium ingxubevange forging zigxile ikakhulu, indlela yokulawula ngokufanelekileyo uluhlu lobushushu, ukhetho olufanelekileyo izinga deformation kunye neqela lolawulo, ukucokisa ubungakanani eziziinkozo, njl ukwandisa okanye ukuphucula isakhono deformation yeplastiki ingxubevange magnesium.
Ngokubanzi, ii-alloys ze-magnesium zenziwe kuluhlu lobushushu obuphezulu obungaphantsi komgangatho oqinileyo wenqanaba lobushushu. Ukuba ubushushu bokubumba buphantsi kakhulu, ukuqhekeka kunokwenziwa kwaye kube brittle, kwaye kunzima ukwenza ukucwangciswa kweplastiki. Xa kuthelekiswa neempawu ze-deformation kwiqondo lokushisa legumbi, i-deformation yeplastiki ye-magnesium alloy kwiqondo lokushisa eliphezulu akugcini nje ukwandisa inkqubo ye-slip kodwa kunye ne-corn boundary slip. I-Grain boundary slip inokubonelela ngezinye iinkqubo ezimbini ezisebenzayo zokutyibilika. Ngokutsho kwekhrayitheriya ye-Von Mises, i-alloy iya kuba nokuguqulwa kweqondo lokushisa eliphezulu, elilungele ukwenza. Kufunyaniswa ukuba iplastiki ye-magnesium alloy yonyuka kakhulu xa ubushushu bungaphezulu kwe-200 ℃, kwaye iplastiki yonyuka ngakumbi xa ubushushu bungaphezulu kwe-225 ℃. Nangona kunjalo, xa iqondo lobushushu liphezulu kakhulu, ngakumbi ngaphezulu kwe-400℃, i-oxidation edliwayo kunye neenkozo ezirhabaxa kulula ukwenzeka.
I-Magnesium alloy inomdla kakhulu kwizinga lokuguqulwa. I-Magnesium alloys ibonisa i-thermoplasticity ephezulu kwizinga eliphantsi lokuguqulwa, kwaye iplastiki ye-magnesium alloys iyancipha kakhulu ngokunyuka kwezinga lokuguqulwa. Kodwa ezahlukeneyo kunye ne-aluminium ingxubevange kunye nezinye izinto, i-magnesium alloy forging yenye yeempawu amaxesha ashushu okubumba amnandi kwaye agqithise kakhulu, yonke into yokufudumeza, ukusebenza kwamandla - amaxesha, ngakumbi ngaphambi kokubumba ubushushu obuphezulu kunye nokubamba ixesha elide, phantsi komlinganiselo omkhulu, kwezinye izinto ezinzima kakhulu ze-magnesium alloy forgings ukwenza, amaxesha amaninzi kufuneka anciphise kancane kancane ubushushu.
Ukuziqhelanisa kubonakalise ukuba iinkozo ezintle ezilinganayo zinokuphucula isakhono seplastiki sokuguqula ingxubevange ye-magnesium, kwaye ubungakanani benene benkozo ikwayeyona nto iphambili emisela ukuba ingot ye-magnesium alloy inokwenziwa ngokuthe ngqo. Ke indlela yokulawula i-microstructure kunye nokucokisa iinkozo yenye yezitshixo zokuphucula ukonakala kwe-alloy.
Ixesha lokuposa: Aug-31-2022