TRIP ÇELİKLERİNİN OTOMOTİV ENDÜSTRİSİNDE KULLANIMININ İNCELENMESİ

Öz

Türkiye ilk ağır sanayi hamlesi olan Karabük Demir-Çelik Fabrikasının kuruluşuyla birlikte entegre çeliküretimine başlamıştır. Türk Demir-Çelik endüstrisi, 21. Yüzyıla kadar olan süreçte farklı krizlere maruzkalmakla birlikte 2001 yılından itibaren hızlı bir büyüme sürecine girmiştir. Fakat küresel ekonomide gelişensektörel değişimlere ayak uydurmak ve üretimi o yönlere çevirmek gereksinim haline gelmiştir. Bu amaçlaülkemizde önemli bir sektör olarak kendini gösteren, katma değeri ve kazanımı yüksek olan otomotivendüstrisine çelik üretmek önemli bir amaç olabilir. Türkiye ve Dünya endüstrileri için gelişmiş hafif yüksekmukavemetli çelik üretimi kritik bir teknolojidir. Gelişmiş ülkelerde çelik endüstrisi entegre tesislere dayalı olup,katma değeri yüksek; gelişmiş yüksek mukavemetli çelik, paslanmaz çelik v.b. gibi ürünlere yönelmiştir.Ülkemizde farklı çelik sac türleri üretilmekle beraber özellikle son yıllarda yoğun bir şekilde kullanılan çift fazlıçelik düşük miktarlarda üretilmekte, ilerleyen yıllarda otomobil ağırlığını azaltmak amacıyla kullanımı artacakolan TRIP çeliği ise üretilmemektedir. Literatür çalışması son yıllarda yapılan özgün çalışmalar çerçevesindebiçimlendirilmiştir. Çalışmada TRIP çeliklerinin otomobillerde kullanılan diğer çeliklerle mikroyapı, çekmedayanımı, çarpma (darbe), şekillendirilebilme ve yorulma özellikleri gibi kriterlere bağlı olarak karşılaştırmalıbir biçimde sunulmuştur. Ayrıca TRIP çeliğinin otomotiv endüstrisinde kullanımı ve Türkiye’de üretilebilirliğihakkında da bir çalışma gerçekleştirilmiştir.

Anahtar Kelimeler

• Demir-çelik, otomotiv, gelişmiş yüksek mukavemetli çelik, TRIP çeliği.

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