Mechanical Properties of Micro-phases Along ⟨001⟩ Direction of Directionally Solidified Nickel-base Super-alloy by In-situ Nano-Indentation

被引：0

作者：

Ma, Yaxin ^{[1
]}

Gao, Yifei ^{[1
]}

Zhang, Yuefei ^{[2
]}

Du, Yuanming ^{[2
]}

机构：

[1] Natl Anal Ctr Iron & Steel, Cent Iron & Steel Res Inst, Beijing, Peoples R China

[2] Beijing Univ Technol, Beijing, Peoples R China

来源：

MACHINERY, MATERIALS SCIENCE AND ENERGY ENGINEERING | 2015年

关键词：

Super-alloy; In-situ nano-indentation; Hardness; Modulus; ELASTIC-MODULUS; NANOINDENTATION; HARDNESS; SURFACE;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, using the in-situ nano-indentation device (SPM/SEM hybrid system) to test the micro-mechanical properties of gamma' phase and eutectic gamma' phase which along <001> direction of directionally solidified nickel-base super-alloy. The hardness and modulus of the eutectic gamma' is higher than gamma' phase. For the specimen ST (without aging treatment), the elastic modulus and hardness of the gamma' phase respectively is 110.7GPa and 1.45GPa, the elastic modulus and hardness of the eutectic gamma' phase respectively is 171.2GPa and 3.98GPa; for the specimen W-1000(aging 1000hours), the elastic modulus and hardness of the gamma' phase respectively is 105.4GPa and 1.35GPa, the elastic modulus and hardness of the eutectic gamma' phase respectively is 161.5GPa and 3.85GPa. After long-term high-temperature aging without loading, the change of the micro-mechanical properties of gamma' phase and eutectic gamma' phase which along <001> direction of directionally solidified nickel-base super-alloy is not apparent. Meanwhile the results of the FEM are in good agreement with the results of the experiments.

引用

页码：538 / 549

页数：12

共 13 条

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