Özellikle nükleer reaktörler için yüksek sıcaklık uygulamalarına aday Ni bazlı alaşımların, Inconel-617 ve Incoloy-800HT, radyasyon zırhlama potansiyellerinin EpiXS ve Phy-X/PSD kodları ile değerlendirilmesi

Bu çalışmada, uzay aracı, gaz türbinleri, nükleer reaktörler ve roket motorları gibi yüksek sıcaklık uygulamaları için ana aday olan Ni bazlı alaşımlar Inconel-617 ve Incoloy-800HT'nin foton-madde etkileşim parametrelerinin hesaplanması amaçlanmıştır. Alaşımların radyasyondan korunma potansiyellerini belirlemek için radyasyon zayıflama ve yığılma faktörleri gibi parametreler geniş bir enerji aralığında Phy-X/PSD ve EpiXS yazılımları kullanılarak elde edilmiştir. Alaşımların hızlı nötron uzaklaştırma tesir kesitleri de belirlenmiştir. Inconel-617'nin Incoloy-800HT'den daha yüksek zırhlama kabiliyetine sahip olduğu gözlemlenmiştir. Alaşımların zırhlama potansiyelleri daha önce bildirilen diğer malzemelerin (sıradan beton, hematit-serpenit, ilmenit-limonit, çelik-hurda, bazalt-manyetit, çelik-manyetit ve ilmenit betonları) zırhlama potansiyelleriyle karşılaştırılmış, Inconel-617 ve Incoloy-800HT'nin bu malzemelerden daha fazla zırhlama kabiliyetine sahip olduğu sonucuna varılmıştır.

Anahtar Kelimeler:

Radyasyon zayıflama parametreleri, radyasyon zırhlama, Inconel-617, Incoloy-800HT

Evaluation of radiation shielding potentials of Ni-based alloys, Inconel-617 and Incoloy-800HT, candidates for high temperature applications especially for nuclear reactors, by EpiXS and Phy-X/PSD codes

In this paper, our purpose is to calculate photon-matter interaction parameters of Ni-based alloys, Inconel-617 and Incoloy-800HT, which are the main candidates for high-temperature applications such as spacecraft, gas turbines, nuclear reactors and rocket motors. The radiation attenuation parameters and buildup factors were obtained in a wide energy range by using Phy-X/PSD and EpiXS softwares to determine the radiation protection capabilities of the alloys. Fast neutron removal cross sections of the alloys were also calculated. It was observed that Inconel-617 has higher shielding ability than Incoloy-800HT. The shielding potentials of the alloys were compared with those of other shielding materials (ordinary concrete, hematite-serpenite, ilmenite-limonite, steel-scrap, basalt-magnetite, steel-magnetite and ilmenite concretes) reported before, and it was concluded that Inconel-617 and Incoloy-800HT have more shielding ability than those.

Keywords:

Radiation attenuation parameters, radiation shielding, Inconel-617, Incoloy-800HT,

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