Unveiling the orientation sensitivity of creep life in near [001] oriented Ni-based single crystal superalloys at intermediate temperatures

被引：8

作者：

Qu, Pengfei ^{[1
]}

Yang, Wenchao ^{[1
]}

Wang, Qiang ^{[1
]}

Liu, Chen ^{[1
]}

Qin, Jiarun ^{[1
]}

Zhang, Jun ^{[1
]}

Liu, Lin ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2024年 / 179卷

基金：

中国国家自然科学基金;

关键词：

Ni-based single crystal superalloys; Creep; Orientation sensitivity; Orientation rotation; CYCLIC DEFORMATION-BEHAVIOR; DOUBLE SLIP ORIENTATION; SOLUTION HEAT-TREATMENT; STACKING-FAULT; MECHANISMS; SIDE; DEPENDENCE; ALLOYS;

D O I：

10.1016/j.ijplas.2024.104035

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Although blades with a deviation angle of less than 15 degrees between the blade stacking axis and the [001] orientation are qualified in the industry, the creep life of samples near [001] orientation exhibits significant anisotropy at intermediate temperatures. Those crystals having orientations within 15 degrees from precise [001] exhibited significantly longer lives when their orientations were closer to the [001]-[101] boundary of the stereographic triangle than to the [001]-[111] boundary. Here, we first investigated the orientation rotation path of specimens near [001] orientation during creep at 750 degrees C/750 MPa, then revealed the dominant slip systems at different creep stages. Subsequently, we evaluated the effect of orientation deviation from precise [001] on creep properties. Finally, our research revealed the orientation sensitive mechanism of creep life in near [001] oriented Ni-based single crystal superalloys at intermediates.

引用

页数：13

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