2007, Vol. 43

Issue (10): 1020-1024 DOI:

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. . Acta Metall Sin, 2007, 43(10): 1020-1024 .

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Abstract The microstructure and mechanical properties of AlTiFeNiCuCrx with different Cr content have been studied. The results show that, with increasing Cr content, the solidification model of the alloys has a hypoeutectic-to-hypereutectic transition. The matrix is composed of primary dendrite phase and chrysanthemum-shaped eutectic structure. The alloys exhibit simple FCC(high Cr content) and BCC(low Cr content) phases. The hardness value does not increase obviously with Cr content. The alloy is brittle in room temperature, but at 1073K has high ductility and higher strength. When xCr=1-1.5, the alloy exhibits the best combination of the compressive strength and the ductility.

Key words: Multi-principal elements High-entropy alloy Microstructure Properties

Received: 09 March 2007

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TG146.4

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2007/V43/I10/1020

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