Influence of carbides and pores on the localized deformation of nickel-based single-crystal superalloys

被引：0

作者：

Rengeng Li ^{[1
]}

Yu Zhang ^{[1
]}

Haoyi Niu ^{[2
]}

Hao Wang ^{[1
,3
]}

Hao Wu ^{[1
]}

机构：

[1] Key Laboratory for Light-weight Materials, Nanjing Tech University

[2] College of Materials Science and Engineering, Chongqing University

[3] CRRC Qishuyan Institute CoLtd

来源：

ProgressinNaturalScience:MaterialsInternational | 2024年 / 34卷 / 03期

关键词：

D O I：

暂无

中图分类号：

TG132.3 [特种热性质合金];

学科分类号：

080502 ;

摘要：

The carbides and pores play a critical role in the cracking tendencies of nickel-based single-crystal superalloys during deformation. In the present study, the deformation mechanism and local strain evolution behavior around carbides and pores were studied through in-situ tensile deformation experiments. The findings indicate that multiple slip systems are easily activated during tensile deformation in single-crystal alloys. Furthermore, the strain localization in carbides is influenced by their morphology, with rod-like and flake-like carbides demonstrating an increased likelihood of cracking during deformation. The strain localization adjacent to pores is markedly more intense, rendering these areas particularly susceptible to cracking. Our work therefore offers a theoretical foundation for enhancing the mechanical properties of nickel-based single-crystal superalloys by controlling carbide morphology and pore formation.

引用

页码：562 / 568

页数：7

共 26 条

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