RADIATION SHIELDING POTENTIALS OF Hf0.5Mo0.5NbTiZrCrX (x=0.1,0.3,0.5) REFRACTORY HIGH ENTROPY ALLOYS BY EPIXS

Öz

W, Zr, Nb, Ti, Mo, Ta, Hf gibi refrakter alaşım elementlerinin oluşturduğu refrakter yüksek entropili alaşımlar, savunma, havacılık ve nükleer enerji üretim endüstrileri gibi alanlarda yaygın olarak tercih edilmektedir. İyi mekanik özellikler, yüksek sıcaklıklarda korozyon ve oksidasyon direnci nedeniyle refrakter yüksek entropili alaşımlar süper alaşımlar yerine aday olarak kabul edilebilir. Bu çalışmanın amacı, EpiXS yazılımı kullanılarak refrakter yüksek entropi alaşımı Hf0.5Mo0.5NbTiZrCrx'in (x=0.1,0.3,0.5) kütle zayıflatma katsayıları, yarı kalınlık, ortalama serbest yol, etkin atom numarası ve yığılma faktörleri gibi radyasyon zayıflatma parametrelerini hesaplamaktır. Elde edilen değerlerin tutarlılığını görmek için, iyi bilinen bir kod olan XCom ile alaşımların kütle zayıflama katsayıları da hesaplandı. Cr miktarındaki artışın alaşımların zırhlama kabiliyetini azalttığı sonucuna varılmıştır.

Anahtar Kelimeler

• Radiation attenuation parameters
• RHEAs
• radiation shielding.

Radiation Shielding Potentials of Hf0.5Mo0.5NbTiZrCrx (X=0.1,0.3,0.5) Refractory High Entropy Alloys By Epixs

Öz

Refractory high entropy alloys formed by refractory alloying elements, such as W, Zr, Nb, Ti, Mo, Ta, Hf are widely preferred in areas such as the defense, aerospace, and nuclear power generation industries. Due to the good mechanical properties, corrosion and oxidation resistance at high temperatures refractory high entropy alloys can be considered as candidates instead of super alloys. The objective of this study was to calculate the radiation attenuation parameters such as mass attenuation coefficients, half value layer, mean free path, effective atomic number and buildup factors of the refractory high entropy alloy, Hf0.5Mo0.5NbTiZrCrx (x=0.1,0.3,0.5) by using EpiXS software. The mass attenuation coefficients of the alloys were also calculated by XCom, a well-known code, to see the consistency of the obtained values. It was concluded that the increase in the amount of Cr decreases the shielding ability of the alloys.

Anahtar Kelimeler

• Radiation attenuation parameters
• RHEAs
• radiation shielding.

Kaynakça

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