Te Hiranga o ngā Kauwhata Āhuatanga i roto i te Hangarau Whakarewa
He taputapu whakairoiro nui ngā tūtohi āhuahanga i roto i te pūtaiao rauemi, inā koa i roto i te mahi whakarewa. Ka whakaratohia he māramatanga hōhonu ki te taurite āhuahanga puta noa i te whānuitanga o ngā āhuatanga pāmahana me te hanganga. Mā te mārama ki ngā tūtohi āhuahanga, ka taea e ngā tohunga whakarewa te hoahoa me te whakahaere i ngā tukanga hangahanga kia tutuki ai ngā āhuatanga rauemi e hiahiatia ana. Ka whakamāramahia e tēnei tuhinga te hiranga o ngā tūtohi āhuahanga i roto i te mahi whakarewa, me te arotake i ō rātou mātāpono taketake, ngā momo tūtohi āhuahanga, me ō rātou tono i roto i te whanaketanga me te tukatuka rauemi.
Ngā Mātāpono Taketake o ngā Kauwhata Āhuatanga
E whakamahia whānuitia ana ngā hoahoa āhuahanga hei whakaatu i te whanaungatanga i waenga i te pāmahana, te pēhanga, me te hanganga matū o tētahi pūnaha rauemi. I roto i te horopaki o te mahi whakarewa, e whakamahia whānuitia ana ngā hoahoa āhuahanga mō ngā pūnaha rua, arā, ko ngā huānga, ngā wāhanga rānei e rua e whakaranua ana. Ko ētahi o ngā ariā nui i roto i ngā hoahoa āhuahanga ko:
1. Wāhanga: He wāhanga ōrite o tētahi pūnaha he hanganga ā-tinana, he hanganga matū ōrite hoki.
2. Rārangi taurite (rārangi here): He rārangi whakapae e whakaatu ana i te taurite i waenga i ngā āhuahanga e rua i tētahi pāmahana.
3. Te Pūwāhi Eutectic: Ko te pūwāhi i runga i te hoahoa e tohu ana i te pāmahana me te hanganga e hanga ai e te ranunga wai ngā āhua totoka e rua i te wā kotahi.
4. Tauhohenga Eutectic: He tauhohenga e tio ai te wai kia rua ngā āhua totoka i te whakamataotanga, i te whakamahanatanga rānei.
5. Rārangi Totoka: Ko te rārangi i runga i te hoahoa āhuahanga e wehewehe ana i ngā totoka mai i te ranunga totoka me te wai.
6. Rārangi Wai: Ko te rārangi i runga i te hoahoa e wehewehe ana i te wai mai i te ranunga wai me te totoka.
Ngā Momo Hoahoa Āhuatanga
1. Kauwhata Āhuatanga Rua
Ko ngā hoahoa ā-wāhanga rua e pā ana ki ngā wāhanga e rua o tētahi pūnaha. He mea tino noa ēnei, ā, e whakarato ana i te māramatanga hōhonu ki te taunekeneke a ngā huānga e rua i ngā pāmahana me ngā hanganga rerekē. Ko tētahi tauira matarohia ko te hoahoa ā-wāhanga rua rino-waro, he mea nui ki te ako i te maitai me te rino maka.
2. Kauwhata Wāhanga Tuatoru
He uaua ake ngā pūnaha wāhanga-toru, ā, he maha ngā wā ka whakaaturia i roto i ngā āhua-toru, i ngā whakaahua tapatoru rānei. He whai hua ēnei hoahoa i roto i ngā pūnaha koranu e toru ngā huānga rerekē e whakauru ana.
3. Ngā Kauwhata Āhuatanga Isobaric me Isothermic
E whakaatu ana ngā tūtohi āhua isobaric i ngā huringa āhua i te pēhanga pumau. He rerekē, he maha ngā whakamahinga o ngā tūtohi isothermal hei whakaatu i ngā huringa hanganga i te pāmahana pumau, hei āwhina i te mārama ki te pānga o te hanganga ki ngā āhuatanga o te rauemi.
4. Kauwhata Wāhanga Pseudobiline
E whakaatu ana te hoahoa rūpahu-rua i tētahi pūnaha e whai wāhi ana ki ngā huānga neke atu i te rua, engari e whakatakotoria ana kia rite ki tētahi pūnaha rua me tētahi wāhanga "whai hua". He maha ngā wā ka whakamahia tēnei tikanga hei whakahaere i te tātaritanga o ngā pūnaha maha-wāhanga.
Ngā Whakamahinga o ngā Kauwhata Āhua i roto i te Hangarau Whakarewa
1. Te Whakawhanaketanga o ngā Koranu Hou
I roto i te whanaketanga o ngā koranu hou, he taputapu nui ngā tūtohi āhuahanga hei whakatau i te hanganga tino pai o ngā rauemi mō ngā āhuatanga motuhake pēnei i te kaha, te ātete ki te waikura, me te pakeke. Hei tauira, ka taea e ngā tūtohi āhuahanga te āwhina ki te whakatau i te hanganga o tētahi koranu konumohe-konupora e tuku ana i te huinga o te kaha teitei me te taumaha mama.
2. Hoahoa Tukanga Maimoatanga Wera
He tukanga nui te whakamahana i roto i te tukatuka whakarewa e uru ana ki te whakamatao me te whakamahana i tētahi rauemi hei whakarerekē i ōna āhuatanga miihini. Mā ngā tūtohi āhuahanga ka whakaratohia he aratohu mārama ki ngā pāmahana me ngā tere whakamatao e hiahiatia ana hei whakatutuki i ngā hanganga moroiti motuhake, pērā i te martensite i roto i te maitai.
3. Te Mana Whakahaere Tukanga Hanga
I roto i ngā tukanga hangahanga pēnei i te whakarewa me te whakarewa, he mea nui ngā hoahoa āhuahanga hei whakarite kia tutuki i ngā rauemi te hanganga me ngā āhuatanga e hiahiatia ana. Hei tauira, i roto i te whakarewa, he mea nui kia mōhio ki ngā pāmahana e huri ai te rauemi hei wai, hei totoka anō hoki hei karo i ngā hapa pēnei i te pakaru.
4. Te Tukatuka i te Puehu Konganuku me te Koranu
I roto i te horopaki o te tukatuka puehu whakarewa, ngā koranu whakarewa rānei, ka taea e ngā hoahoa āhuahanga te mārama ki ngā taunekeneke i waenga i ngā wāhanga, ā, ka āwhina i te whakatau kaupapa e pā ana ki ngā pāmahana tukanga tino pai me ngā hanganga rauemi hei whakaputa i ngā āhuatanga e hiahiatia ana.
5. Tātaritanga Rahunga Rauemi
He mea nui te tātari rahunga rauemi hei whakarite i te pono me te haumaru o ngā hanganga whakarewa, o ngā wāhanga rānei. Mā ngā tūtohi wāhanga ka taea te tautuhi i ngā wāhanga ka puta ai te ngatata, te rahunga rānei o ngā rauemi i raro i ētahi āhuatanga whakahaere, pērā i te pāmahana teitei, i ngā taiao waikura rānei.
Akoranga Take: Kauwhata Āhuatanga Rino-Waro
Hei tauira mō te whakamahinga o ngā tūtohi āhuahanga, me whakaaro tātou ki te tūtohi āhuahanga rino-waro, koinei te pūtake o te mahi whakarewa maitai. E whakaatu ana tēnei tūtohi i te whanaungatanga i waenga i te pāmahana, te hanganga waro, me ngā āhuahanga kei roto i te rino me te maitai.
I runga i te tūtohi rino-waro, he maha ngā wāhanga nui: te ferrite, te austenite, te cementite, me te pearlite. Mā te mārama ki te hanganga o ēnei wāhanga i ngā pāmahana me ngā hanganga rerekē, ka taea e ngā kaihangarau te whakahaere i ngā maimoatanga wera hei whakaputa i ngā āhuatanga maitai e hiahiatia ana. Hei tauira, ko te hanganga o te martensite mā te tineia he huarahi hei whakanui ake i te pakeke o te maitai.
Tukanga Whakawhiti Wāhanga
Ko ngā tukanga whakawhiti āhuahanga i roto i te maitai, pērā i te austenite ki te pearlite, te bainite rānei, he mea nui te tere whakamatao me te hanganga waro. He maha ngā wā ka whakamahia ngā hoahoa Whakawhiti Pāmahana-Wā (TTT) me te Whakawhiti Whakamatao Tonu (CCT) me ngā hoahoa āhuahanga hei mārama ake i ēnei tukanga whakawhiti āhuahanga me te arotau i te maimoatanga wera.
Whakamutunga
He taputapu nui ngā tūtohi āhuahanga i roto i te mahi whakarewa, e āhei ai ngā kaihangarau me ngā kaipūtaiao ki te mārama ki ngā whanaungatanga uaua i waenga i te pāmahana, te hanganga, me te āhuahanga o tētahi rauemi. Mā te whakamahi i ngā tūtohi āhuahanga, ka taea e rātou te hoahoa i ngā koranu hou, te whakahaere i ngā tukanga hanga, te arotau i ngā maimoatanga wera, me te tātari i te rahunga o ngā rauemi.
Mā te mārama hōhonu ki ngā hoahoa ā-wāhanga ka āwhina i te waihanga rauemi me ngā āhuatanga e hiahiatia ana, ā, ka taea hoki te penapena utu me te wā i roto i te tukanga hanga. Nō reira, he pūkenga nui te mōhio ki ngā hoahoa ā-wāhanga mō te hunga e mahi ana i roto i te mahi whakarewa me te pūtaiao rauemi.
