Ngā Āhuatanga e Pā Ana ki ngā Āhuatanga Ā-Mīhini o ngā Konukōre
Ko te konukōre he ranunga o ngā huānga matū e rua, neke atu rānei, ko tētahi he konganuku. He whānuitia te whakamahinga o ngā konukōre i roto i ngā ahumahi maha, tae atu ki te kawe waka, te hanga, te hikohiko, me ētahi atu, nā te mea he pai ake ō rātou āhuatanga miihini ki te whakataurite ki ngā konganuku parakore. Ko ēnei āhuatanga miihini, pērā i te kaha, te mārō, te pakari, me te ngāwari, ka tino whakatau i te mahi me ngā whakamahinga o ngā konukōre. Ka matapakihia e tēnei tuhinga ngā āhuatanga matua e pā ana ki ngā āhuatanga miihini o ngā konukōre, tae atu ki te hanganga matū, te hanganga moroiti, ngā tukanga hanga, me ngā tikanga whakapakari.
1. Te Hanganga Matū
Ko te hanganga matū he mea nui e whakatau ana i ngā āhuatanga ā-pūkaha o ngā koranu. Ka taea e ngā koranu whakarewa te tito i ngā huānga e rua, neke atu rānei, pērā i ngā koranu konumohe kua konatunatua ki te silicon, te konupora rānei, ngā koranu maitai rānei kua whakareihia ki te waro, te chromium, te vanadium rānei. Ka taea e ngā panoni iti o te hanganga matū te pā nui ki ngā āhuatanga ā-pūkaha o tētahi koranu.
Ngā Tauira o ngā Koranu Konumohe
He maha ngā wā ka whakareihia ngā koranu konumohe ki ētahi atu huānga pērā i te parahi, te konupora, te manganese, te silicon, me te konutea hei whakanui ake i te kaha. Hei tauira, ko te konumohe-7075 kua whakakotahihia ki te konutea (tae atu ki te 6.1% konutea te taumaha) he tino kaha te kume, ā, he maha ngā wā ka whakamahia i roto i te umanga rererangi.
Tauira Rino
He momo āhuatanga ā-pūkaha te maitai, he koranu rino me te waro, i runga i te nui o te waro me ētahi atu tāpiringa pērā i te chromium, te nickel, me te molybdenum. Ka whakanui ake te chromium i te pakeke me te ātete ki te waikura, ko te nickel ia ka whakanui ake i te pakari o te koranu maitai.
2. Hanganga iti
He nui hoki te pānga o te hanganga moroiti o te koranu ki ōna āhuatanga hangarau. Kei roto i tēnei hanganga moroiti te rahi o te kōpura, ngā āhua, me ngā matūriki kei roto i te koranu.
Rahi o te witi
He nui te pānga o te rahi o te kōhatu ki te kaha me te pakari o tētahi rauemi. I te nuinga o te wā, ko te iti o te rahi o te kōhatu o tētahi koranu, ko te teitei ake o tōna kaha e ai ki te whanaungatanga Hall-Petch. Hei tauira, ko ngā koranu he iti ake te rahi o te kōhatu he nui ake te kaha kume me te kaha hua i ngā koranu he nui ake ngā kōhatu.
Ngā Wāhanga me ngā Ua
Haunga te rahi o te kōpura, he mea nui anō hoki te momo me te tohatoha o ngā āhua me ngā matūriki i roto i te koranu. Ka hangaia e ētahi konganuku he āhua rangitahi i te whakamataotanga, ka taea ai te whakakaha i te koranu. Hei tauira, i roto i te maitai waro, he āhua tino mārō te martensite i hangaia mai i te austenite i te whakamataotanga tere.
3. Tukanga Hanga
He pānga nui anō hoki tō te tikanga hanga e whakamahia ana hei whakaputa i tētahi koranu ki ōna āhuatanga hangarau. Ko ētahi o ngā tukanga hanga matua e pā ana ki ngā āhuatanga hangarau o tētahi koranu ko te mahi wera, te mahi matao, te maimoatanga wera, me te whakarewanga.
Te Mahi Wera
Ko te mahi wera he whakamahana i te konganuku ki te pāmahana teitei, kātahi ka hurihia tōna āhua. Ka taea e tēnei tikanga te whakapai ake i ngā āhuatanga ā-pūkaha o te konganuku mā te whakarerekē i tōna hanganga moroiti. Hei tauira, ka taea e te mahi wera te whakaiti i te rahi o te kōhao, te whakapai ake i ngā āhuatanga pīngore, me te whakanui ake i te kaha kume.
Te Mahi Matao
Ko te mahi matao, i tētahi atu taha, ko te whakarerekē i te āhua o tētahi rauemi i ngā pāmahana i raro iho i tōna pūwāhi whakakōhatu anō. Ka taea e te mahi matao te whakanui ake i te kaha me te pakeke o tētahi rauemi mā te whakapakeketanga taumahatanga, engari ka taea hoki e ia te whakaiti i tōna pakari me tōna kaha ki te whakarerekē kirihou.
Te Maimoatanga Wera
Ka pā nui ngā maimoatanga wera pēnei i te whakapakeke, te whakamahana, me te whakamahana ki ngā āhuatanga ā-pūkaha o ngā koranu. Hei tauira, ka taea te whakamahi i te whakamahana anō hei whakaiti i te pakeketanga tuatahi me te whakanui ake i te pakari.
4. Tikanga Whakakaha
He maha ngā tikanga whakapakari e whakamahia ana hei whakapai ake i ngā āhuatanga hangarau o ngā koranu, tae atu ki te whakapakari i te wairewa totoka, te whakapakari i te matūriki, te whakapakari i te taumahatanga, me te whakapakari i te witi.
Te Whakakaha i te Otinga Totoka
Ka puta te whakapakari o te otinga totoka ina rewa ngā ngota o tētahi huānga whakarewa i roto i te whatunga tioata o te konganuku turanga, ka whakararuraru i te āhua o te tioata. Hei tauira, i roto i te koranu konumohe-kapurama, ka whakararuraru ngā ngota kapurama i te raupapa whatunga konumohe, ka whakanui ake i tōna kaha.
Te Whakakaha i te Matūriki
Ko te whakapakari matūriki ko te horapa o ngā matūriki mārō, o tētahi wāhanga tuarua rānei i roto i te anga whakarewa. Ka mahi ēnei matūriki iti hei ārai korehau, ka whakanui ake i te kaha ā-pūkaha o te whakarewa. Hei tauira, i roto i te maitai kore waikura, ka taea e ngā matūriki o te chromium carbide (Cr23C6) me ētahi atu waikura whakarewa te whakanui ake i te kaha kume me te ātete ki te kakahu.
Te Whakakaha i te Kukume
Ka tutuki te whakapakari i te kume mā te hanga i ngā nekehanga nui ake i te wā o te whakarerekētanga kirihou me te mahi matao. I te wā e rerekē ana te āhua o te konganuku, ka piki ake ngā nekehanga, ka hono tahi, ā, ka piki ake te kaha o te koranu.
Whakakaha Witi
Ko te whakapakari i te kōhao e ahu mai ana i te whanaungatanga Hall-Petch, e kī ana ko te kaha whakaputa o te koranu he rite whakamuri ki te pūtake tapawhā o tōna rahi kōhao toharite. Ko te iti o te rahi kōhao, ko te teitei ake o te kaha.
Whakamutunga
Ka pāngia ngā āhuatanga ā-pūkaha o ngā koranu e ngā āhuatanga maha, tae atu ki te hanganga matū, te hanganga moroiti, ngā tukanga hanga, me ngā tikanga whakapakari motuhake. Mā te mārama me te whakahaere i ēnei āhuatanga ka taea te hoahoa i ngā rauemi hou me ngā āhuatanga ā-pūkaha kua whakaritea mō ngā tono motuhake. Me whai whakaaro te umanga ki ēnei āhuatanga katoa kia tino whakamahia te pūmanawa o ngā koranu i roto i te whānuitanga o ngā tono hangarau teitei. Mā te mōhiotanga tika, ka taea tonu e te whanaketanga koranu te akiaki i te auahatanga me te whai huatanga puta noa i te whānuitanga o ngā umanga.
