Investigation of the Effect of Temperature and Strain Rate on Mechanical Properties

Yıl 2022, Cilt: 14 Sayı: 2, 406 - 419, 31.07.2022

Süleyman Kılıç , Mehmet Fatih Demirdöğen

https://doi.org/10.29137/umagd.987547

Cited By: 1

Öz

The tensile test is one of the most basic and simple tests in which the material is pulled in a single axis until it breaks and allow us to recognize the material from the data obtained from it. While recognizing materials, their behavior under different temperatures and strain rates is also important. Especially in the manufacturing industry, there are many different production and shaping methods, and each has its own characteristics. For example, in the hot deep drawing process, the mechanical properties of the material can be determined by hot tensile tests. At the same time, this situation has become more important with the development of finite element analysis programs. Because modeling under the same conditions is very effective on the accuracy of the results. In this study, the effects of temperature and strain rate on tensile properties are investigated in steel, titanium, aluminum and nickel alloys. In the examinations, it is seen that the change of the temperature and strain rate for these materials have a great effect on the stress and ductility.

Anahtar Kelimeler

Strain rate, Temperature, Steel, Titanium, Aluminum, Nickel alloys

Sıcaklık ve Deformasyon Hızının Mekanik Özelliklere Etkisinin İncelenmesi

Öz

Çekme testi, malzemenin kopana dek tek eksende çekildiği ve buradan elde edilen verilerden malzemeyi tanımamızı sağlayan en temel ve basit testlerden biridir. Malzemeleri tanırken onların farklı sıcaklık ve deformasyon hızları altındaki davranışları da önem arz etmektedir. Özellikle imalat sanayinde çok farklı üretim ve şekillendirme yöntemleri mevcut olup her birinin kendine has özellikleri mevcuttur. Örneğin, sıcak derin çekme işleminde, sıcak yapılan çekme deneyleri ile malzemenin mekanik özellikleri belirlenebilmektedir. Aynı zamanda sonlu elemanlar analiz programlarının gelişmesiyle beraber bu durum daha önemli hale gelmiştir. Çünkü aynı koşullar altında modelleme yapılması sonuçların doğruluğu üzerinde oldukça etkilidir. Bu çalışma kapsamında çelik, titanyum, alüminyum ve nikel alaşımlarında sıcaklık ve deformasyon hızının çekme özelliklerine etkisi araştırılmıştır. Yapılan incelemelerde, bu malzemeler için sıcaklık ve deformasyon hızı değişiminin, gerilme ve süneklik üzerinde etkisinin çok fazla olduğu görülmüştür.

Anahtar Kelimeler

Deformasyon hızı, Sıcaklık, Çelik, Titanyum, Alüminyum, Nikel alaşımları

Kaynakça

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