In this work, we fabricated a series of severely distorted high-entropy Elinvar alloys through micro-alloying of (CoNi)(50-x)(TiZrHf)(50)Fe-x (in atomic percentage). Through carefully designed experiments, we demonstrate a tunable Elinvar effect that is positively correlated with overall lattice distortion in single-phase B2 high entropy alloys. Finally, we propose a simple physical model that captures the general trend of our experimental findings.
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