Microstructure and Wear Properties of the Quasi-Rapidly Solidified NiAl/ Cr(Mo,Dy) Hypoeutectic Alloy

Microstructure and Wear Properties of the Quasi-Rapidly Solidified NiAl/ Cr(Mo,Dy) Hypoeutectic Alloy

Інші назви: Микроструктура и износостойкость сплава NiAl/Cr(Mo,Dy), полученного методом псевдобыстрой кристаллизации

Тема: Научно-технический раздел

УДК: 539.4

URI: http://dspace.nbuv.gov.ua/handle/123456789/173425

Посилання: Microstructure and Wear Properties of the Quasi-Rapidly Solidified NiAl/ Cr(Mo,Dy) Hypoeutectic Alloy / L.Y. Sheng // Проблемы прочности. — 2016. — № 1. — С. 124-129. — Бібліогр.: 19 назв. — англ.

Підтримка: The authors are grateful to the Strategic New Industry Development Special Foundation of Shenzhen (JCYJ20140419114548515), the Shenzhen International Cooperative Research Project (GJHZ20140419114548516) and the Shenzhen Technology Innovation Plan (CXZZ20140419114548507) for financial support.

Дата: 2016

Завантажень: 350

Microstructure and Wear Properties of the Quasi-Rapidly Solidified NiAl/ Cr(Mo,Dy) Hypoeutectic Alloy

Анотація:

The NiAl/Cr(Mo,Dy) hypoeutectic alloy was prepared by quasi-rapid solidification to investigate its microstructure and wear behavior. The results revealed that the quasi-rapid solidification refined the eutectic cell and NiAl/Cr(Mo) eutectic structure obviously. The alloy was composed of primary NiAl, fine NiAl/Cr(Mo) eutectic lamella and Ni5Dy phase. Compression test showed that the quasi-rapid solidification improved the mechanical properties of the alloy obviously. Wear test exhibited that alloy possessed excellent wear properties at about 1073 K, which should be ascribed to the lubricant film formed by amorphous and Cr₂O₃ and Al₂O₃ nanoparticles. The alloy also exhibited relative good wear properties at 673 K, which should be attributed to its high strength.

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