ʻO ka alloy alumini make kiʻekiʻe kiʻekiʻe: nā mea nui no ka māmā māmā a me ka hoʻomaikaʻi ʻana i ka hana

Hōʻike nā hopena noiʻi hou i nā waiwai maikaʻi o Al-Si-Mg-Mn alloy

I ka hoʻomau ʻana i ka hoʻomohala ʻana i ka ʻoihana kaʻa, ua lilo ka māmā māmā i ala nui e hoʻomaikaʻi ai i ka ikehu a me ka hana. Ma ke ʻano he māmā māmā, ikaika ikaika, hoʻohana nui ʻia ke alumini alumini i ka hana kaʻa. I kēia mau lā, ua hāʻawi kahi haʻawina e pili ana i kahi alloy Al-Si-Mg-Mn ikaika kiʻekiʻe i kahi hiʻohiʻona hou e pili ana i ka hoʻohana ʻana i nā alumini alumini i ka māmā māmā.

ʻO nā waiwai hoʻopau o ka huila Al-Si-Mg-Mn hou

Wahi a ka noiʻi hou loa, hiki i ka tensile ikaika o ka alloy Al-Si-Mg-Mn hou ma hope o ka hoʻolei ʻana (e like me ka hoʻolei ʻana) hiki ke hiki i 230 a 310 MPa, ʻo 200 a 240 MPa ka ikaika, a ʻo ka elongation ma kahi o 0.5% . ʻO ka hoʻokō ʻana i kēia hana e pōmaikaʻi mai ka hoʻokumu ʻana o ka ukua -AlFeMnSi pae a me ka multi-scale eutectic hana i loko o ka alloy. Eia nō naʻe, ʻoi aku ka haʻahaʻa o ka elongation o ka alloy, ma muli o ka mana pololei o nā pores nui a me nā ʻāpana lua.

Hoʻohana i ka ʻenehana make-casting a me ka hoʻomohala ʻana i nā alumini alumini

Ma ke ʻano he kaʻina hana kokoke i ka ʻupena, hoʻohana nui ʻia ka make-casting i ka hana ʻana o ka automotive, kamaʻilio, ʻenekinia mīkini a me nā ʻāpana ʻē aʻe ma muli o kāna hana kiʻekiʻe kiʻekiʻe, kiʻekiʻe huahana precision a me ka hana maikaʻi loa. I nā makahiki i hala iho nei, nui nā ʻāpana kaʻa i hana mua ʻia me ke kila i hoʻololi ʻia e nā ʻāpana hoʻoheheʻe alumini alumini, ʻaʻole ia e hōʻemi wale i ke kaumaha o ke kaʻa, akā loaʻa pū kekahi i ka mālama ʻana i ka ikehu a me nā pahuhopu hoʻohaʻahaʻa hoʻokuʻu.

Hoʻoikaika i ka mīkini a me ka hoʻomaikaʻi ʻana i ka hana o nā alumini alumini

ʻO ka hoʻohui ʻana i nā mea e like me Mg, Cu, Mn a i ʻole Zn i nā alumini alumini e hana i nā pūhui waena e like me AlMgZn, AlMn a i ʻole Al2Cu hiki ke hoʻomaikaʻi maikaʻi i ka ikaika o ka alloy. ʻO ka hopena hoʻoikaika o kēia mau ʻāpana e pili ana i ka hoʻonā paʻa a me ka hoʻoikaika ʻana i ka ua. Hōʻike ka noiʻi ʻana ma ka hoʻohui ʻana i ka nui kūpono o Mn, ʻaʻole hiki ke hoʻemi ʻia ke poʻo paʻa, akā ke ʻano obHiki ke hoʻololi ʻia ka ʻāpana Fe, e hoʻomaikaʻi hou i ka hana o ka alloy.

E noiʻi e pili ana i ke ʻano a me nā waiwai o nā alumini alumini hou

Ua hoʻolālā nā mea noiʻi i nā haku mele Al-Si-Mg-Mn me nā hakina hoʻohui eutectic like ʻole ma o JMatPro phase diagram simulation calculations. Ma o ka nānā ʻana i ka microstructure a me ka nānā ʻana i ka fracture morphology, ua hōʻike ʻia ka hoʻololi ʻana o ka hana a me nā hiʻohiʻona hana o ka alloy. Ua ʻike ʻia ka noiʻi e hiki i nā ʻōnaehana ultrafine eutectic ke hoʻomaikaʻi maikaʻi i ka ikaika a me ka plasticity o nā alloys, e hāʻawi ana i kahi ala hou e hoʻomaikaʻi ai i ka hana o nā alumini alumini.

E noiʻi e pili ana i ke ʻano a me nā waiwai o nā alumini alumini hou

Ua hoʻolālā nā mea noiʻi i nā haku mele Al-Si-Mg-Mn me nā hakina hoʻohui eutectic like ʻole ma o JMatPro phase diagram simulation calculations. Ma o ka nānā ʻana i ka microstructure a me ka nānā ʻana i ka fracture morphology, ua hōʻike ʻia ka hoʻololi ʻana o ka hana a me nā hiʻohiʻona hana o ka alloy. Ua ʻike ʻia ka noiʻi e hiki i nā ʻōnaehana ultrafine eutectic ke hoʻomaikaʻi maikaʻi i ka ikaika a me ka plasticity o nā alloys, e hāʻawi ana i kahi ala hou e hoʻomaikaʻi ai i ka hana o nā alumini alumini.