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Cite this article:
. . Chin J Mater Res, 2008, 22(5): 461-466.
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Abstract TixCrFeCoNiAl (x: molar ratio, x=0，0.5，1，1.5, denoted by T0、T1、T2 and T3, respectively) alloys, which were designed using the strategy of equal-atomic ratio and high entropy, were studied on its mechanical properties and strengthening mechanism. All the four alloys possess fairly high strength and micro-hardness. Among them, both T0 and T1 alloys have excellent comprehensive mechanical properties. Particularly for T1 alloy, the yield stress, fracture strength and plastic strain are as high as 2.259GPa, 3.135GPa and 23.22% respectively, which are even superior to most of the high-strength alloys like bulk metallic glasses. The super-high strength the four alloys should be attributed to the effective multi-strengthening mechanism like solid solution strengthening, nano-phase dispersion strengthening and lattice distortion effects, etc.
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Received: 27 November 2007
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