{"id":2233,"date":"2021-08-04T12:53:31","date_gmt":"2021-08-04T12:53:31","guid":{"rendered":"https:\/\/wldstainless.com\/?p=2233"},"modified":"2021-08-04T12:57:01","modified_gmt":"2021-08-04T12:57:01","slug":"high-strength-stainless-steel-used-in-aircraft-applications","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/tr\/high-strength-stainless-steel-used-in-aircraft-applications\/","title":{"rendered":"U\u00e7ak uygulamalar\u0131nda kullan\u0131lan y\u00fcksek mukavemetli paslanmaz \u00e7elik"},"content":{"rendered":"

Genellikle 800MPa'dan y\u00fcksek \u00e7ekme mukavemeti, 500MPa'dan y\u00fcksek akma mukavemeti paslanmaz \u00e7elik, y\u00fcksek mukavemetli paslanmaz \u00e7elik, 1380MPa'dan y\u00fcksek akma mukavemeti paslanmaz \u00e7eli\u011fe ultra y\u00fcksek mukavemetli paslanmaz \u00e7elik denir. Havac\u0131l\u0131k end\u00fcstrisinin geli\u015fimi, u\u00e7ak ve u\u00e7ak motoru performans\u0131n\u0131n iyile\u015ftirilmesinin b\u00fcy\u00fck \u00f6l\u00e7\u00fcde metal malzemelere ba\u011fl\u0131 oldu\u011funu kan\u0131tlam\u0131\u015ft\u0131r. \u00c7eli\u011fin y\u00fcksek mukavemeti, y\u00fcksek toklu\u011fu, y\u00fcksek stresli korozyon \u00e7atlama direnci ve iyi darbe direnci nedeniyle, ini\u015f tak\u0131m\u0131, kiri\u015f, y\u00fcksek gerilimli ba\u011flant\u0131lar, ba\u011flant\u0131 elemanlar\u0131 ve di\u011fer y\u00fcksek mukavemetli paslanmaz \u00e7elik gibi u\u00e7a\u011f\u0131n baz\u0131 temel yap\u0131sal bile\u015fenleri hala kullan\u0131lmaktad\u0131r.<\/p>\n

Y\u00fcksek mukavemetli paslanmaz \u00e7elik esas olarak Martensit \u00e7\u00f6keltme sertle\u015ftirmeli paslanmaz \u00e7elik ve yar\u0131 \u00d6stenit \u00e7\u00f6keltme sertle\u015ftirmeli paslanmaz \u00e7elik i\u00e7erir. Martensit \u00e7\u00f6keltme sertle\u015ftirmeli paslanmaz \u00e7eli\u011fin mukavemeti, martensit d\u00f6n\u00fc\u015f\u00fcm\u00fc ve \u00e7\u00f6keltme sertle\u015ftirme i\u015flemi ile elde edilir, avantaj\u0131 y\u00fcksek mukavemettir, ayn\u0131 zamanda d\u00fc\u015f\u00fck karbon, y\u00fcksek krom, y\u00fcksek molibden ve\/veya y\u00fcksek bak\u0131r nedeniyle korozyon direnci genellikle iyi de\u011fildir. 18Cr-8Ni'den az \u00f6stenitik paslanmaz \u00e7elik; Serbest kesme, iyi kaynak kabiliyeti, kaynak sonras\u0131 lokal tavlamaya ihtiya\u00e7 duymaz, \u0131s\u0131l i\u015flem i\u015flemi nispeten basittir. Ana dezavantaj\u0131, tavlanm\u0131\u015f durumda bile yap\u0131s\u0131n\u0131n hala d\u00fc\u015f\u00fck karbonlu martensit olmas\u0131d\u0131r, bu nedenle derin deformasyonlu so\u011fuk i\u015flemin ger\u00e7ekle\u015ftirilmesi zordur. Tipik \u00e7elik kalitesi 17-4PH<\/a> ve PH13-8Mo, 400\u00b0C'de \u00e7al\u0131\u015fan motor yatak par\u00e7alar\u0131, ba\u011flant\u0131 elemanlar\u0131 vb. gibi y\u00fcksek mukavemetli, korozyona dayan\u0131kl\u0131 yatak bile\u015fenlerinin \u00fcretiminde kullan\u0131l\u0131r. PH13-8Mo, havac\u0131l\u0131k rulman korozyonuna dayan\u0131kl\u0131 orta s\u0131cakl\u0131k yap\u0131sal par\u00e7alar\u0131nda yayg\u0131n olarak kullan\u0131lmaktad\u0131r.<\/p>\n

Yar\u0131 \u00d6stenit \u00e7\u00f6keltmeyle sertle\u015ftirilmi\u015f paslanmaz \u00e7elik, \u00d6stenit durumunda i\u015flenebilir, so\u011fuk \u015fekilde deforme edilebilir ve kaynaklanabilir ve daha sonra martensit d\u00f6n\u00fc\u015f\u00fcm\u00fc ve \u00e7\u00f6keltme sertle\u015fmesi, farkl\u0131 dayan\u0131mlar ve tokluk koordinasyonu elde etmek i\u00e7in ya\u015flanman\u0131n ayarlanmas\u0131yla kontrol edilebilir. \u00c7elik, iyi bir korozyon direncine ve termal dayan\u0131ma, \u00f6zellikle stresli korozyon direncine sahiptir ve \u00f6zellikle 540 \u00b0 C'nin alt\u0131nda kullan\u0131lan par\u00e7alar\u0131n imalat\u0131 i\u00e7in uygundur. Dezavantaj\u0131, \u0131s\u0131l i\u015flem prosesinin karma\u015f\u0131k olmas\u0131, \u0131s\u0131l i\u015flem s\u0131cakl\u0131k kontrol gereksinimlerinin \u00e7ok do\u011fru olmas\u0131d\u0131r (\u00b15\u00b0C); \u00c7eli\u011fin sertle\u015fme e\u011filimi b\u00fcy\u00fckt\u00fcr ve derin deformasyonlu so\u011fuk i\u015flem i\u00e7in \u00e7o\u011fu zaman bir\u00e7ok ara tavlama s\u00fcresine ihtiya\u00e7 duyulur. Tipik notlar 17-7PH<\/a>, PH15-7Mo, vb. Bu t\u00fcr \u00e7elikler esas olarak havac\u0131l\u0131k end\u00fcstrisinde her t\u00fcrl\u00fc boru, boru ba\u011flant\u0131lar\u0131, yaylar, ba\u011flant\u0131 elemanlar\u0131 vb. gibi korozyon ta\u015f\u0131yan yap\u0131n\u0131n 400 \u00b0 C alt\u0131nda \u00e7al\u0131\u015fmak \u00fczere kullan\u0131l\u0131r.<\/p>\n

 <\/p>\n

U\u00e7ak ini\u015f tak\u0131m\u0131<\/h3>\n

U\u00e7ak ini\u015f tak\u0131mlar\u0131n\u0131n yap\u0131m\u0131nda kullan\u0131lan malzemeler 30CrMnSiNi2A, 4340, 300M, Aermet100 ve di\u011fer u\u00e7ak ini\u015f tak\u0131mlar\u0131 ve daha y\u00fcksek gereksinimlere sahip ba\u011flant\u0131 elemanlar\u0131 \u00e7o\u011funlukla \u00e7\u00f6keltmeyle sertle\u015ftirilmi\u015f paslanmaz \u00e7elikten yap\u0131lm\u0131\u015ft\u0131r. 17-4PH<\/a> F-15 u\u00e7a\u011f\u0131n\u0131n ini\u015f tak\u0131m\u0131 i\u00e7in, B-767 u\u00e7a\u011f\u0131n\u0131n ini\u015f tak\u0131m\u0131 i\u00e7in 15-5pH. PH13-8mo \u00e7eli\u011fi 17-4PH'nin yerini alma potansiyeline sahiptir, 15-5PH<\/a>, 17-7PH, PH15-7Mo ve di\u011fer \u00e7elikler, ayn\u0131 kalitedeki ya\u011f\u0131\u015fla sertle\u015ftirilmi\u015f paslanmaz \u00e7eli\u011fe g\u00f6re daha iyi stres korozyonu direnci nedeniyle.<\/p>\n

D\u00fczlem ta\u015f\u0131yan<\/h3>\n

Alman FAG \u015firketi, PESR'nin y\u00fcksek bas\u0131n\u00e7l\u0131 nitrojen atmosferi alt\u0131nda elektroc\u00fcrufu yeniden eritme i\u015flemiyle \u00fcretilen nitrojen katk\u0131l\u0131 martensit paslanmaz \u00e7elik Cronidur30'u (0.31%C-0.38%N-15% Cr-L %Mo) geli\u015ftirdi. Tamamen sertle\u015ftirilmi\u015f, y\u00fcksek nitrojen i\u00e7eren, SUS440'a g\u00f6re korozyona daha dayan\u0131kl\u0131, y\u00fcksek s\u0131cakl\u0131kta paslanmaz \u00e7eliktir. Tam sertle\u015fme tipi \u00f6zellikleri nedeniyle y\u00fcksek DN de\u011feri (D: rulman i\u00e7 \u00e7ap\u0131\/mm, N: mil devri\/arin) i\u00e7in uygun de\u011fildir, ayn\u0131 Cronidur30 DN4 milyon art\u0131k bas\u0131n\u00e7 gerilmesi ve k\u0131r\u0131lma toklu\u011fu de\u011ferini kar\u015f\u0131layabilir. ayn\u0131 zamanda y\u00fcksek frekansl\u0131 s\u00f6nd\u00fcrme yoluyla. Ancak tavlama s\u0131cakl\u0131\u011f\u0131 15O\u00b0C'den d\u00fc\u015f\u00fckt\u00fcr, motor kapat\u0131ld\u0131ktan sonra termal \u015fokun neden oldu\u011fu yatak s\u0131cakl\u0131\u011f\u0131ndaki art\u0131\u015fa dayanamaz.<\/p>\n

U\u00e7ak ta\u015f\u0131yan yap\u0131sal bile\u015fenler<\/h3>\n

U\u00e7ak yatak yap\u0131s\u0131nda y\u00fcksek mukavemetli paslanmaz \u00e7elik esas olarak 15-5PH<\/a>, 17-4PH, PH13-8Mo, vb., ambar kapa\u011f\u0131 mandal\u0131, y\u00fcksek mukavemetli c\u0131vata, yay ve di\u011fer par\u00e7alar dahil. Sivil u\u00e7aklar, kanat direkleri i\u00e7in, Boeing 737-600 kanat direkleri i\u00e7in 15-5PH \u00e7elik gibi y\u00fcksek mukavemetli paslanmaz \u00e7elik kullan\u0131r; Tip A340-300 kanat SPAR PH13-8Mo \u00e7eli\u011fi. Ph13-8Mo, \u00f6zellikle g\u00f6vde \u00e7er\u00e7eveleri gibi enine performans i\u00e7in y\u00fcksek mukavemet ve tokluk gerektiren par\u00e7alarda kullan\u0131l\u0131r. Daha yak\u0131n zamanlarda Custom465, artan tokluk ve stresli korozyon direnci nedeniyle test edilmi\u015ftir. Custom465, Carpenter taraf\u0131ndan u\u00e7ak flap k\u0131lavuzlar\u0131, \u00e7\u0131ta k\u0131lavuzlar\u0131, \u015fanz\u0131manlar, motor yataklar\u0131 vb. \u00fcretimi i\u00e7in Custom450 ve Custom455 temel al\u0131narak geli\u015ftirilmi\u015ftir. \u00c7elik \u015fu anda MMPDS-02, AMS5936 ve ASTM A564 teknik spesifikasyonlar\u0131na dahil edilmi\u015ftir. HSL180 y\u00fcksek mukavemetli paslanmaz \u00e7elik (0.21C-12.5Cr-1.0Ni-15.5Co-2.0Mo), 4340 gibi d\u00fc\u015f\u00fck ala\u015f\u0131ml\u0131 \u00e7elik ile ayn\u0131 1800MPa mukavemete ve ayn\u0131 korozyon direncine ve toklu\u011fa sahip olan u\u00e7ak yap\u0131s\u0131n\u0131 \u00fcretmek i\u00e7in kullan\u0131l\u0131r. SUS630 gibi \u00e7\u00f6keltmeyle sertle\u015ftirilmi\u015f paslanmaz \u00e7elik.<\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Genellikle 800MPa'dan y\u00fcksek \u00e7ekme mukavemeti, 500MPa'dan y\u00fcksek akma mukavemeti paslanmaz \u00e7elik, y\u00fcksek mukavemetli paslanmaz \u00e7elik, 1380MPa'dan y\u00fcksek akma mukavemeti paslanmaz \u00e7eli\u011fe ultra y\u00fcksek mukavemetli paslanmaz \u00e7elik denir. Havac\u0131l\u0131k end\u00fcstrisinin geli\u015fimi, u\u00e7ak ve u\u00e7ak motoru performans\u0131n\u0131n iyile\u015ftirilmesinin b\u00fcy\u00fck \u00f6l\u00e7\u00fcde metal malzemelere ba\u011fl\u0131 oldu\u011funu kan\u0131tlam\u0131\u015ft\u0131r. [\u2026]<\/p>","protected":false},"author":1,"featured_media":2235,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2233","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-social-activities"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/comments?post=2233"}],"version-history":[{"count":1,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2233\/revisions"}],"predecessor-version":[{"id":2234,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/posts\/2233\/revisions\/2234"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/media\/2235"}],"wp:attachment":[{"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/media?parent=2233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/categories?post=2233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wldstainless.com\/tr\/wp-json\/wp\/v2\/tags?post=2233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}