Ndị otu anaghị akwụ ụgwọ, mgbasa ozi, na ọha mmadụ nwere ike budata onyonyo sitere na webụsaịtị MIT Press Office n'okpuru ikike Creative Commons na-abụghị nke azụmahịa, nke na-abụghị nke ewepụtara.Agaghị emegharị onyonyo ndị enyere, naanị kụọ ha n'ogo ziri ezi.Ekwesịrị iji kredit mee ihe mgbe ị na-edegharị onyonyo;Ebe e si nweta "MIT" maka onyonyo belụsọ na edeturu ya n'okpuru.
Usoro ọgwụgwọ okpomọkụ ọhụrụ e mepụtara na MIT na-agbanwe microstructure nke ọla ndị e biri ebi 3D, na-eme ka ihe ahụ sie ike ma na-eguzogide ọnọdụ okpomọkụ dị oke egwu.Nkà na ụzụ a nwere ike ime ka mbipụta 3D dị elu na-arụ ọrụ dị elu na vanes maka turbin gas na engines jet na-emepụta ọkụ eletrik, na-eme ka atụmatụ ọhụrụ belata oriri mmanụ na ike ike.
A na-eji usoro nkedo nke oge a na-eme turbine gas nke oge a nke a na-awụsa ọla gbazere n'ụdị dị mgbagwoju anya wee gbasie ike.A na-eme ihe ndị a site na ụfọdụ n'ime ihe ndị na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na mbara ala, ebe a na-eme ha ka ha na-agba ọsọ ọsọ na gas na-ekpo ọkụ nke ukwuu, na-ewepụta ọrụ iji mepụta ọkụ eletrik na ụlọ ọrụ ọkụ ma na-enye mkpali maka engines jet.
Enwere mmasị na-arịwanye elu na mmepụta nke turbine blades na-eji mbipụta 3D, nke, na mgbakwunye na uru gburugburu ebe obibi na nke akụ na ụba, na-enye ndị na-emepụta ohere ịmepụta ngwa ngwa ngwa ngwa na geometry dị mgbagwoju anya na ike.Mana mbọ a na-eme iji ebipụta turbine 3D emeriebeghị otu nnukwu ihe mgbochi: creep.
Na metallurgy, a na-aghọta creep dị ka ọchịchọ nke metal na-enweghi ike ịgbanwe agbanwe n'okpuru nrụgide arụ ọrụ mgbe niile na oke okpomọkụ.Mgbe ndị nchọpụta ahụ nọ na-enyocha ohere nke ibipụta agụba turbine, ha chọpụtara na usoro obibi akwụkwọ na-emepụta ọka dị mma nke sitere na iri iri ruo ọtụtụ narị micrometers-ihe microstructure nke na-adịkarị mfe ịbị.
Zachary Cordero, onye prọfesọ Boeing nke ikuku ikuku na MIT kwuru, "N'omume, nke a pụtara na turbine gas ga-adị mkpụmkpụ ndụ ma ọ bụ bụrụ obere ego.""Ndị a bụ nsonaazụ ọjọọ dị oke ọnụ."
Cordero na ndị ọrụ ibe achọtala ụzọ iji melite nhazi nke 3D alloys e biri ebi site na ịgbakwunye usoro ọgwụgwọ okpomọkụ ọzọ nke na-atụgharị mkpụrụ dị mma nke ihe a na-ebipụta n'ime nnukwu "columnar" ọka - microstructure siri ike nke na-ebelata ikike nke ihe ahụ.ihe n'ihi na "ogidi" na-ejikọta na axis nke nrụgide kachasị.Ụzọ e si akọwapụta taa na mmepụta ihe mgbakwunye na-emeghe ụzọ maka mbipụta 3D mmepụta ihe nke ikuku turbine gas, ndị nchọpụta na-ekwu.
Cordero kwuru, "N'ọdịnihu dị nso, anyị na-atụ anya ka ndị na-emepụta turbine gas bipụta agụba ha na nnukwu ụlọ ọrụ na-emepụta ihe na-emepụta ihe ma tinyezie ha site na iji ọgwụgwọ okpomọkụ anyị," Cordero kwuru."Mbipụta 3D ga-eme ka ụlọ nrụpụta ọhụrụ dị jụụ nke nwere ike ịbawanye arụmọrụ ọkụ nke turbines, na-enye ha ohere ịmepụta otu ike ka ha na-ere obere mmanụ ọkụ na n'ikpeazụ na-ewepụta obere carbon dioxide."
Ndị ode akwụkwọ bụ Dominic Pichi, Christopher Carter, na Andres Garcia-Jiménez nke Massachusetts Institute of Technology, Anugrahapradha Mukundan na Marie-Agatha Sharpan nke Mahadum Illinois dị na Urbana-Champaign, na Donovan Leonard nke Oak kwadoro ọmụmụ ihe Cordero. Ridge National Laboratory.
Usoro ọhụrụ nke otu ahụ bụ ụdị recrystallization ntụziaka, ọgwụgwọ okpomọkụ nke na-ebugharị ihe site na mpaghara ọkụ na ọnụ ọgụgụ a na-achịkwa nke ọma, na-ejikọta ọtụtụ mkpụrụ osisi microscopic nke ihe ahụ n'ime kristal buru ibu, sie ike, na-edobe anya.
E chepụtara recrystallization ntụzịaka ihe karịrị afọ 80 gara aga ma tinye ya n'ihe ndị nwere ike imebi.N'ime ọmụmụ ihe ọhụrụ ha, ndị otu MIT etinyela aka na recrystallisation na 3D superalloys e biri ebi.
Ndị otu a nwalere usoro a na 3D e biri ebi nickel superalloys, ọla a na-atụkarị na nke a na-eji na turbin gas.N'ime usoro nnwale, ndị nyocha ahụ debere ihe nlere anya 3D e biri ebi nke mkpanaka dị ka superalloys n'ime ebe ịsa mmiri na-ekpo ọkụ n'ime ụlọ ozugbo n'okpuru eriri induction.Ha ji nwayọọ nwayọọ wepụ mkpanaka nke ọ bụla n'ime mmiri ahụ ma bufee ya na eriri igwe na ọsọ dị iche iche, na-ekpo ọkụ nke ọma na mkpara ndị ahụ na okpomọkụ sitere na 1200 ruo 1245 degrees Celsius.
Ha chọpụtara na ịdọrọ mkpanaka ahụ n'otu ọsọ ọsọ (2.5 millimeters kwa elekere) na na ọnọdụ okpomọkụ (1235 degrees Celsius) na-emepụta gradient okpomọkụ dị elu nke na-eme ka mgbanwe dị na microstructure dị mma nke mgbasa ozi na-ebipụta.
"Ihe na-amalite dị ka obere ihe nwere ntụpọ a na-akpọ dislocations, dị ka spaghetti gbajiri agbaji," Cordero kọwara."Mgbe ị na-ekpo ọkụ ihe, ntụpọ ndị a na-apụ n'anya ma wughachi ya, na ọka nwere ike itolite.ọka site n'ịbanye ihe ndị na-adịghị mma na obere mkpụrụ—usoro a na-akpọ recrystallization.”
Mgbe emechara mkpanaka ndị a na-ekpo ọkụ na-ekpo ọkụ, ndị nchọpụta ahụ nyochara microstructure ha site na iji anya na eletrọn microscopes wee chọpụta na mkpụrụ osisi "columnar", ma ọ bụ ogologo oge, mpaghara kristal nke buru ibu karịa nke mbụ. ọka..
"Anyị hazigharịrị kpamkpam," ka onye edemede bụ Dominic Peach kwuru."Anyị na-egosi na anyị nwere ike ịbawanye nha ọka ahụ site n'ọtụtụ iwu dị ukwuu iji mepụta ọnụ ọgụgụ buru ibu nke mkpụrụ osisi columnar, nke kwesịrị ka usoro iwu mee ka ọganihu dị ukwuu na ihe ndị na-akpụ akpụ."
Ndị otu ahụ gosikwara na ha nwere ike ijikwa ọnụ ọgụgụ ndọpụ na okpomọkụ nke ihe nlele mkpanaka iji mee ka mkpụrụ osisi na-eto eto nke ọma na-eme ka ọ dị mma, na-emepụta mpaghara nke ụdị ọka na nhazi.Ọkwa njikwa a nwere ike inye ndị na-emepụta ohere ka ha bipụta agụba turbine nwere microstructures akọwapụtara saịtị nke enwere ike ịhazi ya na ọnọdụ ọrụ akọwapụtara, Cordero kwuru.
Cordero na-ezube ịnwale ọgwụgwọ okpomọkụ nke akụkụ 3D ebipụtara nso na agụba turbine.Otu a na-elekwa anya n'ime ụzọ iji mee ngwangwa ike tensile nakwa dị ka anwale ihe na-akpụ akpụ nguzogide nke okpomọkụ mesoo owuwu.Ha na-eche na ọgwụgwọ okpomọkụ nwere ike ime ka ngwa ngwa nke mbipụta 3D rụọ ọrụ iji mepụta eriri turbine nke ụlọ ọrụ mmepụta ihe nwere ụdị na usoro dị mgbagwoju anya.
Cordero kwuru na "agụba ọhụrụ na geometry agụba ga-eme ka turbin gas dabere na ala yana, n'ikpeazụ, injin ụgbọ elu na-arụ ọrụ nke ọma," Cordero kwuru."Site na usoro ntọala, nke a nwere ike ibelata ikuku CO2 site na imeziwanye arụmọrụ nke ngwaọrụ ndị a."
Oge nzipu: Nov-15-2022
