ʻike- TJNE

I. Wehewehe o Recrystallization Manao

1. Hoʻopili hou ʻia i ke kaʻina hana crystallization o nā metala paʻa a me nā alloys me ka ʻole o ka hoʻololi ʻana. ʻO ia ke kaʻina hana o nā metala palupalu a i ʻole nā ​​​​mea i hoʻopaʻa ʻia i ka hana me ka ʻole o ka hoʻololi ʻana.

2. Ma hope o ke anuanu deformation i loko o ka metala extrusion a laila e wela ana i kekahi mahana, hou unstorted palaoa e regenerated i loko o ka deformed hale, a me kona mau waiwai e hoʻololi nui, e hoʻi i ka loa softened moku'āina. Kapa ʻia kēia kaʻina hana recrystallization. ʻO ia hoʻi, ʻo ka recrystallization ke kaʻina o ka nucleation a me ka ulu ʻana o nā nuclei kristal like ʻole.

3. ʻO ke kaʻina hana mua i ka wā recrystallization ʻo ia ke kaʻina hana hoʻihoʻi. I kēia pae, hoʻomaka nā ʻātoma i ka diffusion palena pōkole a me ka neʻe ʻana, a neʻe wale nā ​​hemahema a me nā dislocations. ʻO kā lākou neʻe ʻana a me ka coalescence e kōkua i ka hoʻopau ʻana i ke koʻikoʻi o loko i hana ʻia e ka deformation anu. Eia nō naʻe, ke mau nei nā hiʻohiʻona o ka deformation anu, a hoʻololi wale kekahi mau substructure a me nā waiwai kino, me ka hoʻokuʻu ʻia ʻana o kahi o ka ikehu i mālama ʻia i ka wā anuanu.

4. Hiki ke kapa ʻia ʻo ka hoʻihoʻi ʻana i ka annealing.

5. Ma hope o ke kaʻina hana hoʻihoʻi, inā e wela ka metala i kahi wela kiʻekiʻe, piʻi ka diffusion a me ka neʻe ʻana o nā atoms, a e nucleate nā hua hou (e like me ka mea i hōʻike ʻia ma ke Kiʻi 3) a ulu a lilo i mau ʻāpana palupalu palupalu, me ke koʻikoʻi kūloko a pau. Kapa ʻia kēia pae ʻo recrystallization.

6. Ma hope o ka hoʻopau ʻana i ka recrystallization, pono e hoʻopaʻa ʻia nā hua maʻamau a hoʻomau. Eia nō naʻe, i kekahi mau hihia, ʻo ka ulu ʻana o nā kīʻaha ʻo ia wale nō ka hoʻoheheʻe ʻana a me ka wikiwiki o kekahi mau kīʻaha, e hopena i ka hoʻonui ʻana i ka ʻokoʻa ma waena o nā ʻai (ka nui ʻole o ka palaoa). ʻO kēia ulu like ʻole o ka palaoa e like me ka hiki ʻana o ka recrystallization hou i loko o nā ʻano like like ʻole ma hope o ka recrystallization, i kapa ʻia ʻo recrystallization lua. ʻAʻole ʻae ʻia e ka mākeke nā mea me nā ʻanoʻano koʻikoʻi i hoʻokumu ʻia e ka recrystallization lua. No laila, pehea e hoʻomalu ai i ka recrystallization lua he wahi koʻikoʻi no nā ʻenehana ʻoihana.

7. ʻO ka ikaika hoʻoikaika no ka recrystallization mua, ʻo ia ka hoʻemi ʻana o ka ikehu i mālama ʻia ma muli o ka deformation, aʻo ka ikaika hoʻokele no ka recrystallization lua ʻo ia ka hoʻemi ʻana o ka ikehu interfacial.

 

II. Ka Hana Wela a me ka Papapalaoa o na Aluminum Alloys

1. Ke ʻoi aku ka mahana o ka hana ʻana o nā mea hao alumini ma mua o 350 ° C, ua kapa ʻia ʻo ia he hana wela. ʻO ka hana wela ka hopena like o ke ʻano mālama o ka hana ʻana a me ka hoʻomehana ʻana o ka hana wela kiʻekiʻe.

2. ʻO ka mahana hana, ka nui o ka hoʻoili ʻana (e like me ka ratio extrusion, rolling ratio a forging ratio), ka wikiwiki o ka hana ʻana, homogenization state, a me nā mea hoʻohui a i ʻole nā ​​ʻano huila e pili ana i ka hana recrystallization.

3. ʻO ka nui o ka nui o ka hana ʻana, ʻoi aku ka haʻahaʻa o ka mahana recrystallization a me ka liʻiliʻi o nā ʻōpala i hoʻopaʻa ʻia. Inā liʻiliʻi loa ka nui o ka hana, ʻaʻole paha e hoʻopau ʻia ka recrystallization ma muli o ke kiʻekiʻe o ka recrystallization wela, ka hopena i kahi ʻano fibrous a i ʻole kahi ʻano hui ʻia o nā kīʻaha recrystallized elongated a me nā fibers.

4. ʻO ka recrystallization hui pū ʻia a me nā hale palaoa fibrous ʻaʻole i hoʻihoʻi hou ʻia ka mea maʻamau i loaʻa i nā ʻāpana ikaika kiʻekiʻe, e like me 7000 a me 2000 series alloys.

5. Inā kiʻekiʻe loa ka mahana hana i ka wā o ka hana wela, lilo ka nui o ka ikehu deformation i hōʻiliʻili ʻia a i ʻole nā ​​​​dislocations i ka wā o ka hana ʻana i mea liʻiliʻi loa, a ʻoi aku ka kiʻekiʻe o ka mahana recrystallization o ka mea fibrous structure ma hope o ka hana ʻana i ke ana wela kiʻekiʻe. No nā alloys ikaika kiʻekiʻe e like me nā alloys series 2000 a me 7000, i ka wā e ʻoi aku ai ka mahana hana ma mua o 400 ° C, lilo ka recrystallization i mea paʻakikī loa i ka wā o ka mālama ʻana i ka hopena ma hope.

6. Ua like ka recrystallization o ka hoolei ana i ka wela wela me ka hana anu + annealing wela, aka, aia kekahi mau okoa. I loko o ke kaʻina hana recrystallization o ka hana wela, ua liʻiliʻi loa ke kānana i hōʻiliʻili ʻia, no laila ʻaʻole hiki ke hoʻihoʻi hou ʻia kekahi mau mea kiʻekiʻe-alloy ma hope o ka hana wela.