Effect of tungsten content on glass forming ability and microhardness of Ni-Cr-B-W metallic glasses

• Autorzy: Hitit A. , Öztürk P. , Şahin H. , Aşgın A.M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The thermal and mechanical properties of Ni-Cr-B-W alloys as a function of tungsten content were studied. Design/methodology/approach: The studies were performed on (Ni49.7Cr14.7B35.6)100-xWx(x:15-40) metallic glass in the form of foils, which have thickness of 20 and 100 μm. Structures of samples wer examined by X-ray diffraction (XRD). Thermal stabilities of the amorphous samples were measured using differential scanning calorimetry (DSC). Microhardness of the amorphous samples were determined by Vicker’s hardness tester. Findings: The XRD investigations revealed that samples of the alloys which have the thickness of 20 μm were amorphous. However, 100 μm samples of the alloys were not amorphous, but contained crystalline phases. Increasing the tungsten addition improved the glass transition and crystallization temperatures of the alloys. Also, microhardness of the alloys improved with tungsten addition. Practical implications: Thermal and mechanical properties of the alloys investigated depend on their tungsten content. Originality/value: This is the first study on Ni-Cr-B-W metallic glass system. Also, because of the production method used, all of the alloys were obtained as amorphous regardless of their composition, so their thermal and mechanical properties could be determined.

Słowa kluczowe

EN

amorphous materials; Ni-based alloy; hardness

PL

materiały amorficzne; stop na bazie niklu; twardość

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2014
• Tom: Vol. 62, nr 1
• Strony: 5--9
• Opis fizyczny: Bibliogr. 31 poz., rys., tab.

Twórcy

autor

Hitit A.

• Department of Materials Science & Engineering, Afyon Kocatepe University, ANS Kampusu 03200 Afyonkarahisar, Turkey

autor

Öztürk P.

• Department of Materials Science & Engineering, Afyon Kocatepe University, ANS Kampusu 03200 Afyonkarahisar, Turkey

autor

Şahin H.

• Department of Materials Science & Engineering, Afyon Kocatepe University, ANS Kampusu 03200 Afyonkarahisar, Turkey

autor

Aşgın A.M.

• Department of Materials Science & Engineering, Afyon Kocatepe University, ANS Kampusu 03200 Afyonkarahisar, Turkey

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