Experimental and Theoretical Investigation on Phase Formation and Mechanical Properties in Cr-Co-Ni Alloys Processed Using a Novel Thin-Film Quenching Technique.,ACS Combinatorial Science

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Experimental and Theoretical Investigation on Phase Formation and Mechanical Properties in Cr-Co-Ni Alloys Processed Using a Novel Thin-Film Quenching Technique.
ACS Combinatorial Science Pub Date : 2020-04-28 , DOI: 10.1021/acscombsci.9b00170
Dennis Naujoks ₁ , Mike Schneider ₁ , Steffen Salomon ₁ , Janine Pfetzing-Micklich _{1,

2} , Aparna Puchakayala Appaiah Subramanyam ₃ , Thomas Hammerschmidt ₃ , Ralf Drautz ₃ , Jan Frenzel ₁ , Aleksander Kostka _{1,

2} , Gunther Eggeler ₁ , Guillaume Laplanche ₁ , Alfred Ludwig ₁

Affiliation

The Cr-Co-Ni system was studied by combining experimental and computational methods to investigate phase stability and mechanical properties. Thin-film materials libraries were prepared and quenched from high temperatures up to 700 °C using a novel quenching technique. It could be shown that a wide A1 solid solution region exists in the Cr-Co-Ni system. To validate the results obtained using thin-film materials libraries, bulk samples of selected compositions were prepared by arc melting, and the experimental data were additionally compared to results from DFT calculations. The computational results are in good agreement with the measured lattice parameters and elastic moduli. The lattice parameters increase with the addition of Co and Cr, with a more pronounced effect for the latter. The addition of ∼20 atom % Cr results in a similar hardening effect to that of the addition of ∼40 atom % Co.

中文翻译：

用新型薄膜淬火技术处理的Cr-Co-Ni合金的相形成和力学性能的实验和理论研究。

通过结合实验和计算方法对Cr-Co-Ni体系进行了研究，以研究相稳定性和力学性能。制备了薄膜材料库，并使用一种新型的淬火技术将其从高达700°C的高温中淬灭。可以证明在Cr-Co-Ni体系中存在宽的Al固溶区。为了验证使用薄膜材料库获得的结果，通过电弧熔化制备了所选成分的大量样品，并将实验数据与DFT计算的结果进行了比较。计算结果与实测晶格参数和弹性模量吻合良好。晶格参数随Co和Cr的添加而增加，对后者的影响更为明显。

更新日期：2020-04-14

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