The nucleation of δ phases triggered by the stacking faults in a single crystal superalloy

IF 8.6 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Yuan Cheng, Xinbao Zhao, Quanzhao Yue, Wanshun Xia, Qinghai Pan, Yu Zhou, Yuefeng Gu, Ze Zhang
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引用次数: 0

Abstract

Here we investigated the nucleation of the Re, Ru-rich δ phase affected by stacking faults in the γ phase in a 4th generation Ni-based single crystal superalloy during the service at 800°C. The stacking faults in the γ phase were rich in Re and Ru, similar to the observed δ phase. And the stacking fault regions possessed a similar structure to the δ phase, promoting the transformation from γ phase to δ phase. Furthermore, the calculation results indicated that Ru had more significant promoting effects on the δ phase precipitation than Re, providing a reference for the alloy design.
单晶高温合金中由层错引发的δ相形核
本文研究了第四代ni基单晶高温合金在800℃高温下γ相层错对富Re、ru δ相形核的影响。γ相层错中含有丰富的Re和Ru,与δ相相似。层错区具有与δ相相似的结构,促进了γ相向δ相的转变。计算结果表明,Ru对δ相析出的促进作用比Re更显著,为合金设计提供了参考。
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来源期刊
Materials Research Letters
Materials Research Letters Materials Science-General Materials Science
CiteScore
12.10
自引率
3.60%
发文量
98
审稿时长
3.3 months
期刊介绍: Materials Research Letters is a high impact, open access journal that focuses on the engineering and technology of materials, materials physics and chemistry, and novel and emergent materials. It supports the materials research community by publishing original and compelling research work. The journal provides fast communications on cutting-edge materials research findings, with a primary focus on advanced metallic materials and physical metallurgy. It also considers other materials such as intermetallics, ceramics, and nanocomposites. Materials Research Letters publishes papers with significant breakthroughs in materials science, including research on unprecedented mechanical and functional properties, mechanisms for processing and formation of novel microstructures (including nanostructures, heterostructures, and hierarchical structures), and the mechanisms, physics, and chemistry responsible for the observed mechanical and functional behaviors of advanced materials. The journal accepts original research articles, original letters, perspective pieces presenting provocative and visionary opinions and views, and brief overviews of critical issues.
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