Isolation and testing of new single crystal superalloys using alloys-by-design method
Isolation and testing of new single crystal superalloys using alloys-by-design method
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DOI：
10.1016/j.msea.2016.04.089
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发表时间：
2016-06-14
期刊：
影响因子：
6.4
通讯作者：
Crudden, D. J.
中科院分区：
文献类型：
--
作者：
Reed, R. C.;Zhu, Z.;Crudden, D. J.
三种新的单晶高温合金分离使用基于理论的计算建模方法，称为合金设计方法。它们是(i)具有平衡性能的抗氧化低含稀土合金，用于通用燃气轮机应用；（ii）一种含有5.6 wt% Re和2.6 wt% Ru的合金，适用于高性能喷气发动机应用，当需要最大限度地提高抗蠕变性能而不过度损害氧化性能时；（iii）一种廉价、耐腐蚀的合金，用于发电应用，设计时考虑到易于加工。采用熔模铸造技术制备了新型合金，并对其蠕变和氧化性能进行了评价。尽管对微观结构稳定性的预测需要改进，但所谓的设计合金方法的稳健性得到了证明。(c) 2016年Elsevier B.V.出版
Three new single crystal superalloys are isolated using theory-based computational modelling approaches, termed alloys-by-design methods. They are (i) an oxidation-resistant low Re-containing alloy with balanced properties, intended for general-purpose gas turbine applications; (ii) an alloy containing 5.6 wt% Re and 2.6 wt% Ru suitable for high performance jet engine applications, when creep resistance needs to be maximised without oxidation performance being excessively compromised and (iii) a cheap, corrosion-resistant alloy for power generation applications designed with ease-of-processing in mind. The new alloys have been manufactured using investment casting techniques, and their creep and oxidation behaviour evaluated. The robustness of the so-called alloys-by-design methods is demonstrated, although the predictions for microstructural stability need to be improved. (c) 2016 Published by Elsevier B.V.