{"id":4579,"date":"2020-09-09T03:11:17","date_gmt":"2020-09-09T03:11:17","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4579"},"modified":"2020-09-09T03:11:17","modified_gmt":"2020-09-09T03:11:17","slug":"sr-modification","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/tr\/sr-modification\/","title":{"rendered":"Sr De\u011fi\u015fikli\u011fi"},"content":{"rendered":"

Sr modifikasyonunun temel sorunu, ala\u015f\u0131mda mikro g\u00f6zenek olu\u015fumunun artma e\u011filimidir. \u015eu fakt\u00f6rlerin etkileri: erime filtrasyonu<\/a> ve Sr modifiye edicisinin g\u00f6zeneklilik \u00fczerindeki etkileri incelenmi\u015ftir. SR ile modifiye edilmi\u015f eriyiklerde eriyik s\u00fcz\u00fclmesinin g\u00f6zeneklilik azalt\u0131m\u0131 \u00fczerindeki \u00f6nemli etkisi, Sr ile modifiye edilmi\u015f eriyikteki inkl\u00fczyon i\u00e7eri\u011finin modifiye edilmemi\u015f eriyiktekinden daha y\u00fcksek olmas\u0131d\u0131r. Sr ile modifiye edilmi\u015f A356 eriyiklerinde g\u00f6zenek olu\u015fumuna yol a\u00e7an inkl\u00fczyon t\u00fcrlerini anlamak amac\u0131yla, numuneler taramal\u0131 elektron mikroskobu ile incelenmi\u015ftir. Eriyiklerin oksitleyici atmosferde maruz kalma s\u00fcresinin, oksidasyon davran\u0131\u015f\u0131n\u0131 ve inkl\u00fczyon t\u00fcr\u00fcn\u00fc etkiledi\u011fi saptanm\u0131\u015ft\u0131r. Sr de\u011fi\u015ftirildi<\/a> erir.<\/p>\n

Erimi\u015f malzeme oksidasyon atmosferinde uzun s\u00fcre tutulmad\u0131\u011f\u0131nda, al\u00fcmina tabakas\u0131 ve par\u00e7ac\u0131klar\u0131 \u00f6nemli bir rol oynarken, SR i\u00e7eren oksitler g\u00f6zenek olu\u015fumuna katk\u0131da bulunmaz. Nispeten k\u0131sa bekletme s\u00fcresi alt\u0131nda, A356 ala\u015f\u0131m\u0131 eriyi\u011finin y\u00fczey oksit tabakas\u0131 Al2O3 ve MgO'dan olu\u015fur, ancak saptanabilir miktarda SR bulunmaz. Bununla birlikte, Al-Si Sr intermetalik bile\u015fi\u011fi tespit edilmi\u015ftir ve Al-Si Sr'nin g\u00f6zenek olu\u015fumunda rol oynad\u0131\u011f\u0131 \u00f6ne s\u00fcr\u00fclmektedir. Ergitme, oksitleyici atmosferde uzun s\u00fcre tutuldu\u011funda, y\u00fczey oksit tabakas\u0131n\u0131n \u2019den fazlas\u0131 SrO i\u00e7eren spinelden olu\u015fur.<\/p>\n

\"Sr<\/p>\n

D\u00fc\u015f\u00fck bas\u0131n\u00e7 ve atmosferik ko\u015fullar alt\u0131nda Sr modifikat\u00f6r\u00fcn\u00fcn g\u00f6zenek olu\u015fumu \u00fczerindeki etkisi incelenmi\u015ftir. Sr modifikat\u00f6r\u00fcn\u00fcn, geleneksel ince cidarl\u0131 \u00e7elik kupa numunelerinde g\u00f6zenek olu\u015fumu \u00fczerinde \u00f6nemli bir etkisi olmad\u0131\u011f\u0131 saptanm\u0131\u015ft\u0131r. Dekompresyon testinde kal\u0131p olarak kullan\u0131lmak \u00fczere, y\u00fckselticili yeni tip bir metal kupa tasarlanm\u0131\u015ft\u0131r. Bu kupa, test numunesinde makroskobik b\u00fcz\u00fclme meydana gelmemesi i\u00e7in y\u00f6nl\u00fc kat\u0131la\u015fmay\u0131 iyile\u015ftirecek \u015fekilde tasarlanm\u0131\u015ft\u0131r. Bu kal\u0131p kullan\u0131larak Sr modifiye edicisinin g\u00f6zenek olu\u015fumu \u00fczerindeki etkisi incelenmi\u015ftir. Dekompresyon ve atmosferik ko\u015fullar alt\u0131nda, Sr modifikasyonunun g\u00f6zenek say\u0131 yo\u011funlu\u011fu ve g\u00f6zenek hacim fraksiyonundaki art\u0131\u015f \u00fczerindeki etkisi belirgin hale gelmektedir. Ayr\u0131ca sonu\u00e7lar, hidrojen i\u00e7eri\u011fi 0,1 cc\/100 g Al\u2019den az olan eriyiklerde Sr modifikasyon maddesinin g\u00f6zenek olu\u015fumu \u00fczerindeki etkisinin belirgin olmad\u0131\u011f\u0131n\u0131 g\u00f6stermektedir.<\/p>","protected":false},"excerpt":{"rendered":"

The main problem of Sr modification is the increasing tendency of micropore formation in the alloy. The effects of melt filtration and Sr modifier on…<\/p>","protected":false},"author":1,"featured_media":4594,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4663,4664],"class_list":["post-4579","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-sr-modification","tag-sr-modifier"],"yoast_head":"\nSr Modification Effect Study on the Pore Formation in Melt Filtration<\/title>\n<meta name=\"description\" content=\"It is found that Sr Modification has no significant effect on the pore formation in the conventional thin-walled steel cup samples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/tr\/sr-modification\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" 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