Mwepu na imenyụ na ịka nká bụ ụdị ọgwụgwọ okpomọkụ nke aluminom alloys. Annealing bụ ọgwụgwọ na-eme ka ọ dị nro, nzube ya bụ ime ka alloy ahụ bụrụ otu ma kwụsie ike na nhazi na nhazi, wepụ ọrụ siri ike, ma weghachite plasticity nke alloy. Nkwụsị na ịka nká bụ ọgwụgwọ okpomọkụ na-ewusi ike, nzube ya bụ ime ka ike nke alloy dịkwuo mma, a na-ejikarị ya eme ihe maka aluminum alloys nke nwere ike ime ka ọ dịkwuo ike site na ọgwụgwọ okpomọkụ.
1 Na-ewe iwe
Dị ka ihe dị iche iche mmepụta chọrọ, aluminum alloy annealing na-ekewa n'ime ọtụtụ ụdị: ingot homogenization annealing, billet annealing, intermediate annealing na okokụre ngwaahịa annealing.
1.1 Ingot homogenization annealing
N'okpuru ọnọdụ nke ngwa ngwa condensation na enweghị nhata crystallization, ingot ga-enweghi usoro na nhazi, na-enwekwa nnukwu nrụgide n'ime. Iji gbanwee ọnọdụ a ma melite arụ ọrụ na-ekpo ọkụ nke ingot, a na-achọkarị annealing homogenization.
Iji kwalite mgbasa nke atomic, a ga-ahọrọ okpomọkụ dị elu maka annealing homogenization, mana ọ gaghị agafe ebe mgbaze dị ala eutectic na-agbaze nke alloy. N'ozuzu, na homogenization annealing okpomọkụ bụ 5 ~ 40 ℃ ala karịa agbaze ebe, na annealing oge bụ ukwuu n'ime n'etiti 12 ~ 24h.
1.2 Billet annealing
Billet annealing na-ezo aka na mgbakasị ahụ tupu nrụrụ oyi mbụ n'oge nhazi nrụgide. Ebumnuche bụ ime ka billet nweta usoro kwesịrị ekwesị ma nwee ikike nrụrụ plastik kacha. Dị ka ihe atụ, na Rolling ọgwụgwụ okpomọkụ nke aluminom alloy slab na-ekpo ọkụ akpọrepu bụ 280 ~ 330 ℃. Mgbe ngwa ngwa jụrụ oyi n'ime ụlọ, ihe na-emesi ike ọrụ enweghị ike ikpochapụ kpamkpam. Karịsịa, maka ikpo ọkụ na-eme ka aluminom alloys siri ike, mgbe ngwa ngwa jụrụ oyi, usoro recrystallization akwụsịbeghị, na ngwọta siri ike nke supersaturated adịghị emebi emebi kpamkpam, na akụkụ nke ọrụ na-eme ka ike sie ike na nkwụsịtụ ka na-ejigide. Ọ na-esiri ike ịtụgharị mpịakọta oyi ozugbo na-enweghị annealing, ya mere a na-achọsi ike billet. N'ihi na-abụghị okpomọkụ-emeso ike aluminum alloys, dị ka LF3, na annealing okpomọkụ bụ 370 ~ 470 ℃, na ikuku jụrụ a rụrụ mgbe na-ekpo ọkụ maka 1.5 ~ 2.5h. Okpomọkụ billet na annealing a na-eji maka nhazi tube na-adọkpụ kwesịrị ịdị elu nke ọma, enwere ike họrọ oke okpomọkụ. N'ihi na aluminum alloys na ike ike site okpomọkụ ọgwụgwọ, dị ka LY11 na LY12, na billet annealing okpomọkụ bụ 390 ~ 450 ℃, na-na nke a okpomọkụ 1 ~ 3h, mgbe ahụ, mma n'ime ọkụ ka n'okpuru 270 ℃ na a ọnụego nke ọ dịghị ihe karịrị 30 ℃ / h na ikuku jụrụ oyi.
1.3 Annealing etiti
Mbelata nke etiti na-ezo aka na mgbakasị ahụ n'etiti usoro nrụrụ oyi, ebumnuche ya bụ ikpochapụ ịrụsi ọrụ ike iji kwado nrụrụ oyi na-aga n'ihu. N'ikwu okwu n'ozuzu, mgbe emechara ihe ahụ, ọ ga-esi ike ịnọgide na-arụ ọrụ oyi na-enweghị nkwụsị nke etiti mgbe emechara 45 ~ 85% nrụrụ oyi.
Usoro usoro nke ntanye n'etiti bụ otu ihe ahụ na nke ntanye billet. Dị ka ihe chọrọ nke oyi deformation ogo, intermediate annealing nwere ike kewaa atọ ụdị: annealing zuru ezu (ngụkọta deformation ε≈60 ~ 70%), mfe annealing (ε≤50%) na nta annealing (ε≈30 ~ 40%). Abụọ mbụ annealing usoro bụ otu ihe ahụ dị ka billet annealing, na nke ikpeazụ na-ekpo ọkụ na 320 ~ 350 ℃ maka 1.5 ~ 2h na mgbe ikuku mma.
1.4. Nchicha ngwaahịa emechaala
Ngwunye ngwaahịa agwụla bụ ọgwụgwọ okpomọkụ ikpeazụ nke na-enye ihe onwunwe ụfọdụ ihe nhazi na nhazi dịka ihe achọrọ nke ọnọdụ teknụzụ ngwaahịa.
Enwere ike kewaa nchacha ngwaahịa agwụla n'ime ikpo ọkụ dị elu (mmepụta ngwaahịa dị nro) na obere okpomọkụ annealing (mmepụta nke ọkara ngwaahịa siri ike na steeti dị iche iche). Ngwunye okpomọkụ dị elu kwesịrị ijide n'aka na enwere ike nweta usoro recrystallization zuru oke na ezigbo plasticity. N'okpuru ọnọdụ nke ijide n'aka na ihe ahụ na-enweta nhazi na arụmọrụ dị mma, oge njide ekwesịghị ịdị ogologo. Maka aluminom alloys nke nwere ike iwusi ike site na ọgwụgwọ okpomọkụ, iji gbochie mmetụta nke ikuku jụrụ oyi, a ghaghị ịchịkwa ọnụego jụrụ oyi.
Mbelata okpomọkụ dị ala na-agụnye mgbakasị ahụ mgbakasị ahụ na nkwụsịtụ nro na-adị nro, nke a na-ejikarị eme ihe maka aluminom dị ọcha na ọgwụgwọ adịghị ọkụ na-eme ka aluminom alloys sie ike. Ịmepụta usoro nkwụsịtụ okpomọkụ dị ala bụ ọrụ dị mgbagwoju anya, nke ọ bụghị nanị na ọ dị mkpa ka a tụlee ọnọdụ okpomọkụ na-ekpo ọkụ na ijide oge, kamakwa ọ dị mkpa iji tụlee mmetụta nke adịghị ọcha, ogo alloying, nrụrụ oyi, okpomọkụ na-ekpo ọkụ na-ekpo ọkụ na okpomọkụ na-ekpo ọkụ. Iji mepụta usoro ntanye okpomọkụ dị ala, ọ dị mkpa iji tụọ mgbanwe mgbanwe n'etiti okpomọkụ na-ekpo ọkụ na ihe ndị na-emepụta ihe, wee chọpụta ọnọdụ okpomọkụ nke annealing dị ka ihe ngosi arụmọrụ akọwapụtara na ọnọdụ teknụzụ.
2 Na-emenyụ
The quenching nke aluminum alloy na-akpọ ngwọta ngwọta, nke bụ igbari dị ukwuu alloying ọcha na metal dị ka a abụọ na-adọ n'ime siri ike ngwọta dị ka o kwere site elu okpomọkụ okpomọkụ, sochiri ngwa ngwa jụrụ igbochi ọdịda nke abụọ na-adọ, si otú inweta a supersaturated aluminum dabeere α siri ike ngwọta, nke a kwadebere nke ọma maka ọgwụgwọ ịka nká ọzọ.
Ebumnuche nke ịnweta ngwọta siri ike α supersaturated bụ na solubility nke usoro nke abụọ na alloy na aluminom kwesịrị ịba ụba nke ukwuu na mmụba nke okpomọkụ, ma ọ bụghị ya, enweghị ike imezu ebumnuche ọgwụgwọ ngwọta siri ike. Imirikiti ihe ndị na-eme ihe na aluminom nwere ike mepụta eserese eutectic nke nwere njirimara a. Na-ewere Al-Cu alloy dị ka ihe atụ, eutectic okpomọkụ bụ 548 ℃, na ụlọ okpomọkụ solubility nke ọla kọpa na aluminum bụ ihe na-erughị 0,1%. Mgbe kpụ ọkụ n'ọnụ ruo 548 ℃, ya solubility na-abawanye na 5.6%. Ya mere, Al-Cu alloys nwere ihe na-erughị 5.6% ọla kọpa na-abanye na mpaghara α otu akụkụ mgbe okpomọkụ okpomọkụ gafere akara solvus ya, ya bụ, akụkụ nke abụọ CuAl2 na-agbaze kpamkpam na matrix, na otu ngwọta siri ike nke α nwere ike nweta mgbe emechara.
Quenching bụ ọrụ ọgwụgwọ okpomọkụ kachasị mkpa na nke na-achọsi ike maka alloys aluminum. Isi ihe bụ ịhọrọ okpomoku kpo oku kwesịrị ekwesị wee hụ na ọnụ ahịa jụrụ oyi zuru oke, yana ijikwa ọkụ ọkụ ọkụ ma belata nrụrụ ọkụ.
Ụkpụrụ nke ịhọrọ okpomọkụ na-ekpo ọkụ bụ iji mee ka okpomọkụ na-ekpo ọkụ na-ekpo ọkụ dị ka o kwere mee mgbe ị na-ahụ na aluminom alloy adịghị emebiga ihe ókè ma ọ bụ ọka na-eto eto nke ukwuu, ka ọ na-eme ka mmụba nke ngwọta α siri ike na ike mgbe ọgwụgwọ ịka nká gasịrị. N'ozuzu, aluminom alloy kpo oku oku na-achọ ka ọkụ okpomọkụ akara ziri ezi na-n'ime ± 3 ℃, na ikuku na ọkụ na-amanye na-ekesa iji hụ na uniformity nke ọkụ ọkụ.
Ihe na-akpata oke ọkụ nke alloy aluminom bụ site na agbaze akụkụ nke ihe ndị dị ala na-agbaze n'ime igwe, dị ka ọnụọgụ abụọ ma ọ bụ multi-element eutectics. Nribiga oke ọkụ ọ bụghị naanị na-akpata mbelata nke akụrụngwa, kamakwa ọ na-enwe mmetụta siri ike na nguzogide corrosion nke alloy. Ya mere, ozugbo aluminom alloy na-ere ọkụ, a pụghị ikpochapụ ya na ngwaahịa alloy kwesịrị ịkwatu. N'ezie oke ọkụ nke aluminom alloy na-ekpebisi ike site na ngwakọta alloy na ọdịnaya adịghị ọcha, yana metụtara steeti nhazi alloy. Okpomọkụ na-ere ọkụ nke ngwaahịa ndị emerela nhazi nrụrụ plastik dị elu karịa nke nkedo. Ka nhazi nrụrụ dị ukwuu, ọ na-adị mfe maka ihe ndị na-abụghị ihe na-agbaze ala na-agbaze n'ime matriks mgbe ọ na-ekpo ọkụ, ya mere oke ọkụ ọkụ na-abawanye.
Ọnụ ọgụgụ dị jụụ n'oge nkwụsị nke aluminom alloy nwere mmetụta dị ukwuu na ike ịka nká na nguzogide corrosion nke alloy. N'oge quenching usoro nke LY12 na LC4, ọ dị mkpa iji hụ na α siri ike ngwọta adịghị decompose, karịsịa na okpomọkụ mmetụta nke 290 ~ 420 ℃, na a zuru ezu nnukwu jụrụ ọnụego chọrọ. A na-ekwukarị na ọnụego jụrụ oyi kwesịrị ịdị n'elu 50 ℃ / s, yana maka alloy LC4, ọ ga-eru ma ọ bụ gafere 170 ℃ / s.
Ihe a na-ejikarị emenyụ emenyụ maka aluminum alloys bụ mmiri. Mmepụta omume na-egosi na ukwuu jụrụ ọnụego n'oge quenching, ukwuu nke mpụta nchegbu na ihe fọdụrụ deformation nke quenched ihe ma ọ bụ workpiece. Ya mere, maka obere workpieces na mfe shapes, mmiri okpomọkụ nwere ike ịbụ ubé ala, n'ozuzu 10 ~ 30 ℃, na ekwesịghị gafere 40 ℃. N'ihi na workpieces na mgbagwoju shapes na nnukwu iche na mgbidi ọkpụrụkpụ, iji belata quenching deformation na cracking, mmiri okpomọkụ nwere ike mgbe ụfọdụ-amụba 80 ℃. Otú ọ dị, a ghaghị ịkọwapụta na ka mmiri ọkụ nke tank na-eme ka ọkụ na-abawanye, ike na nguzogide corrosion nke ihe ahụ na-ebelatakwa ya.
3. Ịka nká
3.1 Mgbanwe nhazi na mgbanwe arụmọrụ n'oge ịka nká
Ihe ngwọta siri ike α nke karịrị akarị nke enwetara site na imenyụ bụ ihe na-ejighị n'aka. Mgbe ọ na-ekpo ọkụ, ọ ga-erepịa ma gbanwee ghọọ nhazi nha nhata. N'iji Al-4Cu alloy dị ka ọmụmaatụ, nhazi nha ya kwesịrị ịbụ α+CuAl2 (θ phase). Mgbe otu-phase supersaturated α siri ike ngwọta mgbe quenching na-ekpo ọkụ maka ịka nká, ọ bụrụ na okpomọkụ dị elu nke ọma, a ga-ebuli usoro θ ozugbo. Ma ọ bụghị ya, a ga-eme ya na nkebi, ya bụ, mgbe usoro mgbanwe dị n'etiti etiti gachara, enwere ike iru usoro nhazi ikpeazụ CuAl2. Ọnụ ọgụgụ dị n'okpuru na-egosi njirimara nhazi kristal nke ọkwa mmiri ozuzo ọ bụla n'oge usoro ịka nká nke Al-Cu alloy. Foto a. bụ ihe owuwu lattice kristal na steeti emenyụ. N'oge a, ọ bụ otu-phase α supersaturated siri ike ngwọta, na ọla kọpa atọm (oji ntụpọ) na-ọ bụla na enweghị usoro na-ekesa na aluminum (white ntụpọ) matrix lattice. Ihe onyonyo b. na-egosi ihe owuwu lattice n'oge mmalite nke mmiri ozuzo. Atọ ọla kọpa na-amalite itinye uche n'akụkụ ụfọdụ nke matrix lattice iji mepụta mpaghara Guinier-Preston, nke a na-akpọ mpaghara GP. Mpaghara GP dị obere na ụdị diski, yana dayameta nke ihe dịka 5 ~ 10μm na ọkpụrụkpụ nke 0.4 ~ 0.6nm. Ọnụọgụ mpaghara GP dị na matriks ahụ buru oke ibu, na njupụta nkesa nwere ike iru 10¹⁷~10¹⁸cm-³. Ọdịdị kristal nke mpaghara GP ka dị ka nke matriks ahụ, ha abụọ bụ cubic gbadoro ụkwụ n'ihu, ma ọ na-ejigide njikọ dị n'otu na matriks. Otú ọ dị, n'ihi na nha atom ọla kọpa dị ntakịrị karịa nke atom aluminom, ịba ụba nke atom ọla kọpa ga-eme ka lattice kristal dị nso na mpaghara ahụ daa, nke na-akpata mgbagwoju anya.
Eserese eserese nke kristal na-agbanwe nke alloy Al-Cu n'oge ịka nká
Foto a. Akwụsịghị steeti, ngwọta siri ike α otu nkeji, atom ọla kọpa (ntụpọ ojii) na-ekesa nke ọma;
Ihe onyonyo b. N'oge mmalite nke ịka nká, a na-emepụta mpaghara GP;
Ihe onyonyo c. N'ọgwụgwụ oge ịka nká, a na-emepụta usoro mgbanwe nke ọkara na-ejikọta ọnụ;
Ihe onyonyo d. Okpomọkụ ịka nká dị elu, oke mmiri ozuzo nke usoro nha nha na-enweghị isi
Mpaghara GP bụ ngwaahịa mbụ tupu mmiri ozuzo na-apụta n'oge usoro ịka nká nke alloys aluminum. Ịgbatị oge ịka nká, karịsịa ịba ụba okpomọkụ, ga-enwekwa usoro mgbanwe ndị ọzọ dị n'etiti. Na Al-4Cu alloy, e nwere θ" na θ' usoro mgbe mpaghara GP gasịrị, na n'ikpeazụ, a na-enweta usoro nhazi nke CuAl2. Ogo θ buru ibu karịa nke mpaghara GP, ka nwere ụdị diski, nwere dayameta nke ihe dịka 15 ~ 40nm na ọkpụrụkpụ nke 0.8 ~ 2.0nm. Ọ na-aga n'ihu na-ejiri matriks na-emekọ ihe ọnụ, mana ogo nke mgbagha lattice na-esiwanye ike. Mgbe ị na-agbanwe site na θ" na θ 'phase, size toro na 20 ~ 600nm, ọkpụrụkpụ bụ 10 ~ 15nm, na interface na-ejikọta ya na-ebibikwa akụkụ ụfọdụ, na-aghọ ihe mgbagwoju anya nke ọkara, dị ka egosiri na ọnụ ọgụgụ c. Ngwaahịa ikpeazụ nke ịka nká bụ nha nhata θ (nke na-abụghị nke oge na-eme ka ọ bụrụ ihe na-adịghị emebi emebi). interface, dị ka e gosiri na foto d.
Dị ka ọnọdụ dị n'elu, usoro ịka nká nke Al-Cu alloy bụ αs→α+GP zone →α+θ"→α+θ'→α+θ.Ogbo usoro ịka nká na-adabere na ihe mejupụtara alloy na nkọwa ịka nká. A na-enwekarị ihe karịrị otu ngwaahịa ịka nká n'otu steeti ahụ.
N'oge usoro ịka nká, mpaghara GP na oge mgbanwe na-esi na matriks ahụ dị ntakịrị n'ogo, gbasasịrị nke ukwuu, na ọ naghị adị mfe nrụrụ. N'otu oge ahụ, ha na-eme ka mgbagha lattice na matriks ma na-etolite ubi nrụgide, nke nwere mmetụta dị ịrịba ama na-egbochi mmegharị nke nkwụsịtụ, si otú ahụ na-abawanye nguzogide plastik nke alloy na imeziwanye ike na ike ya. Ihe omume ike ịka nká a ka a na-akpọ nkụchi mmiri. Ọnụ ọgụgụ dị n'okpuru ebe a na-egosi mgbanwe isi ike nke Al-4Cu alloy n'oge nkwụsị na ọgwụgwọ ịka nká n'ụdị mgbanaka. Nkeji m na ọnụ ọgụgụ ahụ na-anọchi anya ike nke alloy na ọnọdụ mbụ ya. N'ihi akụkọ akụkọ na-ekpo ọkụ dị iche iche na-arụ ọrụ, ike nke steeti mbụ ga-adịgasị iche, n'ozuzu HV = 30 ~ 80. Mgbe ikpo ọkụ na 500 ℃ na quenching (ogbo II), atom ọla kọpa niile na-etisasịwo n'ime matriks iji mepụta ngwọta siri ike nke otu-phase supersaturated α na HV = 60, nke siri ike okpukpu abụọ ka isi ike na steeti annealed (HV=30). Nke a bụ nsonaazụ nke ike ngwọta siri ike. Mgbe emenyụchara, a na-etinye ya na ụlọ okpomọkụ, na ike nke alloy na-anọgide na-abawanye n'ihi na-aga n'ihu na-etolite GP zones (ogbo III). Usoro ike ịka nká a n'ime ụlọ okpomọkụ ka a na-akpọ ịka nká eke.
M-ala mbụ;
II - steeti ngwọta siri ike;
III - ịka nká nke okike (mpaghara GP);
IVa - ọgwụgwọ regression na 150 ~ 200 ℃ (agbazekwa na mpaghara GP);
IVb — ịka nká (θ”+θ' nkeji);
V—obere oge (θ”+θ' nkeji)
Na ọkwa IV, alloy na-ekpo ọkụ ruo 150 Celsius maka ịka nká, mmetụta siri ike na-apụta ìhè karịa nke ịka nká. N'oge a, mmiri ozuzo ngwaahịa bụ tumadi θ" na-adọ, nke nwere kasị ukwuu na-ewusi mmetụta na Al-Cu alloys. Ọ bụrụ na ịka nká okpomọkụ na-n'ihu na-amụba, mmiri ozuzo na-adọ mgbanwe si θ" oge na θ 'adọ, na hardening mmetụta na-ebelata, na ike ike na-ebelata, abanye ogbo V. Ọ bụla ịka nká ọgwụgwọ na-achọ artificial na nke a na-akpọ oku ogbo bụ nke a na-emepụta ihe na IV. Ọ bụrụ na ike ahụ erute uru ike siri ike nke alloy nwere ike iru mgbe ịkachara (ya bụ, ogbo IVb), a na-akpọ ịka nká a kacha elu. Ọ bụrụ na eruteghị uru ike ike kacha elu, a na-akpọ ya emebeghị agadi ma ọ bụ ịka nká na-ezughị ezu. Ọ bụrụ na ọnụ ahịa kacha elu gafere na ike na-ebelata, a na-akpọ ya ịka nká. Ọgwụ nkwụsi ike ịka nká bụkwa nke ịka nká. Mpaghara GP emebere n'oge ịka nká anaghị akwụsi ike. Mgbe a na-ekpo ọkụ ngwa ngwa na okpomọkụ dị elu, dị ka ihe dị ka 200 Celsius C, ma na-ekpo ọkụ ruo nwa oge, mpaghara GP ga-agbaze azụ na ngwọta α siri ike. Ọ bụrụ na a na-eme ka ọ dị jụụ ngwa ngwa (imenyụ) tupu usoro mgbanwe ndị ọzọ dị ka θ" ma ọ bụ θ' precipitate, alloy nwere ike iweghachi ya n'ọnọdụ mbụ ya kwụsịrị.
Ịgba ike afọ bụ ihe ndabere maka ịmepụta ihe ọkụkụ aluminom na-ekpo ọkụ na-ekpo ọkụ, na ike ime afọ ya na-emetụta kpọmkwem ihe mejupụtara alloy na usoro ọgwụgwọ okpomọkụ. Al-Si na Al-Mn ọnụọgụ abụọ alloys enweghị mmetụta mmiri ozuzo siri ike n'ihi na usoro nha nha na-agbapụta ozugbo n'oge usoro ịka nká, yana alloys aluminum anaghị agwọta okpomọkụ. Agbanyeghi na Al-Mg alloys nwere ike mebe mpaghara GP na usoro mgbanwe β', ha nwere naanị ike ikesi mmiri ozuzo na alloys magnesium dị elu. Al-Cu, Al-Cu-Mg, Al-Mg-Si na Al-Zn-Mg-Cu alloys nwere ike ike mmiri ozuzo siri ike na mpaghara GP ha na usoro mgbanwe, na ugbu a bụ isi usoro alloy nke nwere ike ịgwọ ọkụ ma wusie ike.
3.2 eke ịka nká
N'ozuzu, aluminom alloys nke nwere ike wusie ike site na ọgwụgwọ okpomọkụ na-enwe mmetụta ịka nká mgbe ọ kwụsịrị. Ọ bụ mpaghara GP na-ebute ike ịka nká nke okike. A na-ejikarị ịka nká eke eme ihe na Al-Cu na Al-Cu-Mg alloys. Ụdị ịka nká nke Al-Zn-Mg-Cu alloys na-adị ogologo oge, ọ na-ewekwa ọtụtụ ọnwa iji ruo ọkwa kwụsiri ike, ya mere, a naghị eji usoro ịka nká eme ihe.
E jiri ya tụnyere ịka nká, mgbe ịka nká nke okike, ike mkpụrụ nke alloy dị ala, ma plasticity na siri ike dị mma, na nkwụsị nke corrosion dị elu. Ọnọdụ nke aluminom siri ike nke sistemụ Al-Zn-Mg-C dịtụ iche. Nguzogide corrosion mgbe ịka nká na-akawanye mma na-adịkarị mma karịa nke ahụ mgbe ịka nká.
3.3 Artificial ịka nká
Mgbe ọgwụgwọ ịka nká emechara, aluminom alloys nwere ike nweta ike mkpụrụ kachasị elu (karịsịa ngbanwe oge ịgbake) yana nkwụsi ike nhazi ka mma. Aluminom siri ike, aluminom akpara akpa na aluminom nkedo na-abụkarị agadi. Okpomọkụ ịka nká na oge ịka nká nwere mmetụta dị mkpa na ihe onwunwe alloy. Okpomọkụ ịka nká na-abụkarị n'etiti 120 ~ 190 ℃, na ịka nká anaghị agafe awa 24.
Na mgbakwunye na ịka nká nke otu ọkwa, aluminom alloys nwekwara ike ịnakwere usoro ịka nká nke akara akara. Ya bụ, a na-eme ikpo ọkụ ugboro abụọ ma ọ bụ karịa na okpomọkụ dị iche iche. Ka ihe atụ, LC4 alloy nwere ike mere agadi na 115 ~ 125 ℃ maka 2 ~ 4h na mgbe ahụ na 160 ~ 170 ℃ maka 3 ~ 5h. Ịka nká nke nta nke nta nwere ike ọ bụghị nanị na-ebelata oge, kamakwa melite microstructure nke Al-Zn-Mg na Al-Zn-Mg-Cu alloys, na budata melite nchekasị corrosion iguzogide, ike ọgwụgwụ na mgbaji siri ike na-enweghị isi ibelata n'ibu Njirimara.
Oge nzipu: Mar-06-2025
