Effect of Y2O3 Content and Sintering Temperature on Mechanical Properties of ODS Nickel-Based Superalloy

被引：0

作者：

Chen Wenting ^{[1
]}

Xiong Weihao ^{[1
]}

Zhang Xiuhai ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Mat Forming & Die Technol, Wuhan 430074, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2010年 / 39卷 / 01期

关键词：

ODS nickel-based superalloy; Y2O3; content; sintering temperature; grain boundary segregation;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ODS nickel-based superalloys with different contents of Y2O3 (mass fraction from 0% to 10%) as dispersion phase were prepared by powder metallurgy (PM) method by different sintering technologies. Effects of oxide content and sintering temperature on the mechanical properties of ODS nickel-based superalloys were studied. Results reveal that the sample with 1.5% Y2O3 sintered at 1260 degrees C for 2 h has optimal comprehensive properties, whose relative density is 90.9% and tensile strength is 669 MPa. The phases of alloy powder prepared by different milling technologies were determined by XRD. The mechanism for the effect of Y2O3 content and sintering temperature on the mechanical properties of the ODS superalloys was analyzed through fracture microstructure observation and micro-area chemical composition analysis.

引用

页码：112 / 116

页数：5

共 14 条

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