{"id":6771,"date":"2024-11-03T12:35:07","date_gmt":"2024-11-03T12:35:07","guid":{"rendered":"https:\/\/premiumalu.com\/2024-t4-aluminum-properties\/"},"modified":"2026-08-17T14:08:01","modified_gmt":"2026-08-17T14:08:01","slug":"2024-t4-aluminyum-ozellikleri","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/tr\/2024-t4-aluminum-properties\/","title":{"rendered":"2024 T4 Al\u00fcminyumun \u00d6zelliklerinin Ke\u015ffedilmesi"},"content":{"rendered":"

2024 Al\u00fcminyumu Nedir?<\/h2>\n\n\n\n

2024, birincil ala\u015f\u0131m elementi olarak bak\u0131r i\u00e7eren (3,8\u20134,9% Cu, ayr\u0131ca 1,2\u20131,8% Mg ve 0,3\u20130,9% Mn) 2000 serisi bir al\u00fcminyum ala\u015f\u0131m\u0131d\u0131r. Mukavemetini so\u011fuk i\u015fleme yoluyla de\u011fil, \u00e7\u00f6kelme sertle\u015fmesi \u2014 al\u00fcminyum kafes yap\u0131s\u0131nda mikroskobik alt\u0131 bak\u0131r k\u00fcmeleri olu\u015fturan kontroll\u00fc bir \u0131s\u0131l i\u015flem d\u00f6ng\u00fcs\u00fc \u2014 yoluyla kazan\u0131r. Sonu\u00e7, d\u00f6vme formda mevcut en g\u00fc\u00e7l\u00fc al\u00fcminyum ala\u015f\u0131mlar\u0131ndan biridir; \u00e7ekme mukavemeti, yo\u011funlu\u011funun yakla\u015f\u0131k \u00fc\u00e7te biri ile yumu\u015fak \u00e7eli\u011fe rakip olur.<\/p>\n\n\n\n

Bu bak\u0131r i\u00e7eri\u011fi ayn\u0131 zamanda 2024'\u00fcn 5xxx veya 6xxx ala\u015f\u0131mlar\u0131ndan daha kolay korozyona u\u011framas\u0131n\u0131n da nedenidir. Pratikte malzeme neredeyse her zaman alclad sac (y\u00fczeye metalurjik olarak ba\u011flanm\u0131\u015f saf al\u00fcminyum) olarak tedarik edilir veya anodizasyon ya da boya ile korunur. Mukavemet-a\u011f\u0131rl\u0131k profili, 2024'\u00fc g\u00f6vde yap\u0131lar\u0131 ve y\u00fcksek performansl\u0131 makineler i\u00e7in varsay\u0131lan se\u00e7im haline getiren \u015feydir \u2014 ve \u00f6zellikle \u015fekillendirilmi\u015f par\u00e7alar i\u00e7in se\u00e7ti\u011finiz miza\u00e7 (temper) tam olarak bu nedenle ala\u015f\u0131m\u0131n kendisinden daha \u00f6nemlidir.<\/p>\n\n\n\n

T4 Miza\u00e7\u0131n\u0131 Anlamak<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u201cT4\u201d tam tan\u0131m\u0131, ala\u015f\u0131m d\u00f6k\u00fcld\u00fckten, son \u015fekline (sac, plaka, \u00e7ubuk veya boru) i\u015flendikten ve \u00e7\u00f6zeltiye alma \u0131s\u0131l i\u015flemine tabi tutulduktan sonra uygulanan iki a\u015famal\u0131 bir termal i\u015flemi tan\u0131mlar.<\/p>\n\n\n\n

    \n
  1. \u00c7\u00f6zelti \u0131s\u0131l i\u015flemi.<\/strong>\u00a0Ala\u015f\u0131m, bak\u0131rca zengin \u00e7\u00f6keltileri homojen bir kat\u0131 \u00e7\u00f6zelti i\u00e7inde \u00e7\u00f6zmek i\u00e7in yakla\u015f\u0131k 493\u00b0C (920\u00b0F) s\u0131cakl\u0131\u011fa \u0131s\u0131t\u0131l\u0131r. Bu s\u0131cakl\u0131kta bak\u0131r atomlar\u0131 al\u00fcminyum matris boyunca tamamen da\u011f\u0131l\u0131r. Malzeme daha sonra \u2014 genellikle so\u011fuk suda \u2014 h\u0131zla su verilir (s\u00f6nd\u00fcr\u00fcl\u00fcr) ve bak\u0131r a\u015f\u0131r\u0131 doygun kat\u0131 \u00e7\u00f6zelti i\u00e7inde hapsedilir. Ala\u015f\u0131m yava\u015f so\u011futulsayd\u0131, bak\u0131r kaba ve zay\u0131f ba\u011fl\u0131 par\u00e7ac\u0131klar olarak \u00e7\u00f6kelirdi; h\u0131zl\u0131 su verme bunu \u00f6nler.<\/li>\n\n\n\n
  2. Do\u011fal ya\u015fland\u0131rma.<\/strong>\u00a0Su verilen malzeme birka\u00e7 g\u00fcn oda s\u0131cakl\u0131\u011f\u0131nda tutulur. Bu s\u00fcre zarf\u0131nda bak\u0131r atomlar\u0131 al\u00fcminyum kafes i\u00e7inde k\u0131sa mesafeler boyunca dif\u00fcze olur ve {100} d\u00fczlemlerinde k\u00fcmelenerek Guinier-Preston (GP) b\u00f6lgeleri olarak bilinen koherent b\u00f6lgeler olu\u015fturur. Bu b\u00f6lgeler \u00e7evredeki kafesi zorlar ve dislokasyon hareketini engeller; bu da mukavemeti art\u0131ran mekanizmad\u0131r. Ya\u015fland\u0131rma s\u00fcreci yakla\u015f\u0131k 4\u20135 g\u00fcn sonra tepe mukavemete yak\u0131n bir seviyeye ula\u015f\u0131r ve aylarca yava\u015f\u00e7a devam eder; ancak pratik tasar\u0131m \u00f6zellikleri ilk hafta i\u00e7inde stabilize olur.<\/li>\n<\/ol>\n\n\n\n

    Sonu\u00e7, y\u00fcksek \u00e7ekme mukavemetini (~470 MPa \u00e7ekme dayan\u0131m\u0131) yayg\u0131n olarak belirtilen 2024 miza\u00e7lar\u0131n\u0131n en y\u00fcksek s\u00fcnekli\u011fi ile birle\u015ftiren bir miza\u00e7t\u0131r \u2014 tipik olarak 50 mm'de \u201320 uzama. Bu s\u00fcneklik, T4'\u00fcn i\u00e7ermedi\u011fi<\/em> \u015feyin do\u011frudan sonucudur: so\u011fuk i\u015fleme ad\u0131m\u0131 ve gerilim giderme germe yoktur. Malzeme, tam ya\u015fland\u0131r\u0131lm\u0131\u015f mukavemete ula\u015f\u0131rken taze su verilmi\u015f durumun tam \u015fekillendirilebilirli\u011fini korur.<\/p>\n\n\n\n

    T4'\u00fcn T3'ten Fark\u0131<\/h3>\n\n\n\n

    T3, T4'e en yak\u0131n miza\u00e7t\u0131r. Her ikisi de \u00e7\u00f6zeltiye al\u0131n\u0131r ve do\u011fal olarak ya\u015fland\u0131r\u0131l\u0131r. Fark tek bir i\u015flem ad\u0131m\u0131ndad\u0131r: T3, su verme ve do\u011fal ya\u015fland\u0131rma \u00f6ncesinde kontroll\u00fc bir so\u011fuk i\u015fleme indirgemesi al\u0131r (tipik olarak %1\u20133). Bu so\u011fuk i\u015fleme, kafeste daha fazla dislokasyon anlam\u0131na gelen deformasyon sertle\u015fmesi ekler; bu da \u00e7ekme ve akma mukavemetini hafif\u00e7e art\u0131r\u0131r ancak s\u00fcnekli\u011fi ve \u015fekillendirilebilirli\u011fi azalt\u0131r.<\/p>\n\n\n\n

    Is\u0131l i\u015flem sonras\u0131nda \u015fekillendirilecek, b\u00fck\u00fclecek veya gererek \u015fekillendirilecek bir par\u00e7a i\u00e7in T4 daha pratik bir se\u00e7imdir. So\u011fuk i\u015flemenin olmamas\u0131, malzemenin daha homojen deforme olmas\u0131 ve \u00e7atlamadan \u00f6nce daha s\u0131k\u0131 b\u00fckme yar\u0131\u00e7aplar\u0131n\u0131 tolere etmesi anlam\u0131na gelir. Daha fazla \u015fekillendirme olmadan haddelenmi\u015f veya \u00e7ekilmi\u015f olarak kullan\u0131lacak bir par\u00e7a i\u00e7in T3\u2019\u00fcn marjinal mukavemet avantaj\u0131 tercih edilebilir. 2024-T3 rehberi<\/a> so\u011fuk i\u015fleme yolunu daha ayr\u0131nt\u0131l\u0131 olarak ele al\u0131r.<\/p>\n\n\n\n

    2024-T4 Mekanik \u00d6zellikleri<\/h2>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    M\u00fclkiyet<\/th>De\u011fer<\/th>Notlar<\/th><\/tr><\/thead>
    Yo\u011funluk<\/td>2,78 g\/cm\u00b3<\/td>2xxx serisi i\u00e7in tipik<\/td><\/tr>
    Nihai \u00c7ekme Dayan\u0131m\u0131<\/td>470 MPa (68 ksi)<\/td>Boyuna, oda s\u0131cakl\u0131\u011f\u0131<\/td><\/tr>
    \u00c7ekme Akma Mukavemeti (%0,2 ofset)<\/td>324 MPa (47 ksi)<\/td>\u00c7o\u011fu yap\u0131sal tasar\u0131m hesab\u0131n\u0131 y\u00f6netir<\/td><\/tr>
    Kopma Uzamas\u0131<\/td>~\u201320<\/td>50 mm \u00f6l\u00e7\u00fc boyunda; 2024 miza\u00e7lar\u0131 aras\u0131nda en y\u00fcksek<\/td><\/tr>
    Elastisite Mod\u00fcl\u00fc<\/td>73,1 GPa (10.600 ksi)<\/td>\u00c7eli\u011fin yakla\u015f\u0131k \u00fc\u00e7te biri<\/td><\/tr>
    Yorulma Mukavemeti (5\u00d710\u2078 \u00e7evrim)<\/td>~140 MPa (20 ksi)<\/td>D\u00fczg\u00fcn numune, R = \u22121<\/td><\/tr>
    Kesme Dayan\u0131m\u0131<\/td>285 MPa (41 ksi)<\/td>Ba\u011flant\u0131 eleman\u0131 ve per\u00e7in birle\u015fim tasar\u0131m\u0131 i\u00e7in ge\u00e7erlidir<\/td><\/tr>
    Brinell Sertlik<\/td>120 HB<\/td>500 kg y\u00fck, 10 mm bilye<\/td><\/tr>
    Elektriksel \u0130letkenlik<\/td>30% IACS<\/td>Al\u00fcminyum i\u00e7in d\u00fc\u015f\u00fck \u2014 mukavemet i\u00e7in belirtin, ak\u0131m ta\u015f\u0131ma i\u00e7in de\u011fil<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    324 MPa'l\u0131k akma mukavemeti \u00e7o\u011fu yap\u0131sal tasar\u0131m\u0131 y\u00f6neten de\u011ferdir. T4'\u00fc di\u011fer 2024 miza\u00e7lar\u0131ndan ay\u0131ran \u015fey akma de\u011feri de\u011fildir \u2014 T351 ayn\u0131 325 MPa'ya ula\u015f\u0131r \u2014 uzamad\u0131r. ~ ile T4, T351'den (~\u201315) yakla\u015f\u0131k \u201340 daha fazla s\u00fcneklik ve T6'n\u0131n (~%8\u201310) neredeyse iki kat\u0131 s\u00fcneklik korur. Bu fark do\u011frudan \u015fekillendirilebilirlikte kendini g\u00f6sterir: bir T4 sac\u0131, ayn\u0131 ala\u015f\u0131m\u0131n T3, T351 veya T6 durumuna k\u0131yasla \u00e7atlamadan \u00f6nce daha s\u0131k\u0131 bir yar\u0131\u00e7apa b\u00fck\u00fclebilir veya daha fazla gererek \u015fekillendirilebilir.<\/p>\n\n\n\n

    2024-T4 Nerelerde Kullan\u0131l\u0131r<\/h2>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    Y\u00fcksek mukavemet, yorulma direnci ve \u00fcst\u00fcn s\u00fcnekli\u011fin kombinasyonu, T4'\u00fc \u015fekillendirilmi\u015f havac\u0131l\u0131k saclar\u0131 i\u00e7in ve malzemenin \u0131s\u0131l i\u015flem sonras\u0131nda \u015fekillendirilmesi gereken uygulamalar i\u00e7in standart miza\u00e7 haline getirir.<\/p>\n\n\n\n

    Havac\u0131l\u0131k ve Uzay Yap\u0131lar\u0131<\/h3>\n\n\n\n

    Birincil uygulama alan\u0131. Kanat kaplamalar\u0131, g\u00f6vde panelleri ve yap\u0131sal kapaklar genellikle alclad ko\u015fulunda 2024-T4 sacdan \u015fekillendirilir. \u015eekillendirme i\u015flemleri \u2014 fren b\u00fckme, gererek \u015fekillendirme veya rulo \u015fekillendirme \u2014 karma\u015f\u0131k konturlar\u0131 \u00e7atlamadan elde etmek i\u00e7in T4\u2019\u00fcn y\u00fcksek uzamas\u0131ndan yararlan\u0131r. \u015eekillendirildikten sonra par\u00e7a, mizac\u0131n tam ya\u015fland\u0131r\u0131lm\u0131\u015f mukavemetini korur.<\/p>\n\n\n\n

    Kanat alt kaplamalar\u0131 ve g\u00f6vde kaplamalar\u0131 her u\u00e7u\u015fta \u00e7ekme bask\u0131n yorulma \u00e7evrimleri ya\u015far. 2024-T4, uzun hizmet \u00f6m\u00fcrleri i\u00e7in gereken yorulma dayan\u0131kl\u0131l\u0131\u011f\u0131n\u0131 sa\u011flarken a\u011f\u0131rl\u0131\u011f\u0131 e\u015fde\u011fer bir \u00e7elik tasar\u0131m\u0131n yakla\u015f\u0131k \u00fc\u00e7te birinde tutar. Alclad tabaka, nemli veya tuzlu ortamlarda \u00e7\u0131plak ala\u015f\u0131m\u0131n hizmet \u00f6mr\u00fcn\u00fc s\u0131n\u0131rlayacak korozyona kar\u015f\u0131 koruma sa\u011flar.<\/p>\n\n\n\n

    \u0130\u015flenmi\u015f yap\u0131sal bile\u015fenler i\u00e7in \u2014 b\u00f6lme duvarlar\u0131, ba\u011flant\u0131 par\u00e7alar\u0131, braketler \u2014 T351, T4\u2019e k\u0131yasla genellikle tercih edilir \u00e7\u00fcnk\u00fc gerilim giderme germe i\u015fleme distorsiyonunu \u00f6nler. T4'\u00fcn rol\u00fc \u00f6zellikle \u015fekillendirme kabiliyetinin i\u015fleme stabilitesinden daha \u00f6nemli oldu\u011fu \u015fekillendirilmi\u015f sac ve hafif plakalardad\u0131r. Daha geni\u015f bir ala\u015f\u0131m-ala\u015f\u0131m kar\u015f\u0131la\u015ft\u0131rmas\u0131 i\u00e7in 2024 vs 7075 analizi<\/a> her ala\u015f\u0131m ailesinin ne zaman uygun oldu\u011funu ele al\u0131r.<\/p>\n\n\n\n

    Di\u011fer Y\u00fcksek Gerilimli Uygulamalar<\/h3>\n\n\n\n