A Novel Low-Density, High-Hardness, High-entropy Alloy with Close-packed Single-phase Nanocrystalline Structures

作者：Youssef, Khaled M.; Zaddach, Alexander J.; Niu, Changning; Irving, Douglas L.; Koch, Carl C.^*

来源：Materials Research Letters, 2015, 3(2): 95-99.

DOI：10.1080/21663831.2014.985855

• Mechanical Alloying
• X-ray Diffraction
• Hardness
• Nanocrystalline
• High-entropy Alloys

A low-density, nanocrystalline high-entropy alloy, Al20Li20Mg10Sc20Ti30 was produced by mechanical alloying. It formed a single-phase fcc structure during ball milling and transformed to single-phase hcp upon annealing. The alloy has an estimated strength-to-weight ratio that is significantly higher than other nanocrystalline alloys and is comparable to ceramics. High hardness is retained after annealing.

• 出版日期2015