° To address the UHT anisotropy, a finely-designed [111]-oriented SX superalloy, enriched with 1.5 wt.% , has been developed. The present alloy demonstrated an impressive creep life exceeding 200 h under conditions of 1150 °C/137 MPa, setting a record in the existing literature. This remarkable property can be attributed to the effective utilization of conventional strengthening mechanisms, as evidenced by the interaction between phases and dislocations. Additionally, the advantageous anisotropy associated with the [111] orientation offers a solution to the trade-off between UHT creep resistance and material density.

中文翻译：

---

[111]取向单晶高温合金具有出色的超高温抗蠕变性能

° 为了解决 UHT 各向异性问题，开发了一种精心设计的 [111] 取向 SX 高温合金，其含量为 1.5 wt.%。该合金在1150℃/137MPa的条件下表现出超过200小时的令人印象深刻的蠕变寿命，创下了现有文献的记录。这种显着的特性可归因于传统强化机制的有效利用，相和位错之间的相互作用证明了这一点。此外，与[111]取向相关的有利的各向异性为UHT抗蠕变性和材料密度之间的权衡提供了解决方案。