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Ageing behaviour of equiatomic consolidated Al20Co20Cu20Ni20Zn20 high entropy alloy

机译：赤脂巩固Al20Co20Cu20Ni20Zn20高熵合金的老化行为

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摘要

The effect of ageing treatment on the evolution of microstructure and hardness of consolidated Al20Co20Cu20Ni20Zn20 high entropy alloy is reported. The consolidated alloy specimens were solutionized by heat treatment at 1433 K for 96 h. The solutionized specimens were subsequently subjected to ageing treatment at 673, 773, 873 and 1073 K for 48 h to investigate the effect of ageing treatment on the evolution of microstructure as well as micro-hardness of the alloy. The fully solutionized specimens reveal formation of single phase FCC beta phase. The artificially aged alloy consists of Ni and Al rich FCC a (Ll(2)) precipitate in FCC (gamma) matrix. This is akin to precipitation in Ni-based superalloys. The hardness measurement of the aged specimens indicate peak age-hardening (similar to 6.2 GPa) at 773 K. Therefore, the present study demonstrates possibility of age hardening of consolidated alloys akin to sinter ageing.
机译：据报道了老化处理对巩固Al20CO20NI20ZN20高熵合金的微观结构和硬度的展现的影响。 通过在1433k的106小时下通过热处理溶液溶解整合合金标本。 随后将溶液化标本在673,773,873和1073K处进行老化处理48小时，以探讨老化处理对微观结构的演变的影响以及合金的微硬度。 完全解决的样本揭示了单相FCCβ相的形成。 人工老化的合金由Ni和Al富含FCC A（LL（2））沉淀在FCC（γ）基质中组成。 这类似于Ni基超合金中的沉淀。 老化试样的硬度测量表示在773k的峰值硬化（类似于6.2GPa）。因此，本研究表明，巩固合金类似于烧结衰老的固结合金的可能性。

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