【摘 要】
：
The combined effects of (Y,Cu) on the microstructure and room-temperature mechanical properties of the NiAl intermetallic compound under uniaxial compression st
【机 构】
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School of Materials Science and Engineering
【基金项目】
：
The work was financially supported by the Project of Liaoning Province Educational Bureau;the Initiating Project for Doctors of Shenyang Aerospace University
论文部分内容阅读
The combined effects of (Y,Cu) on the microstructure and room-temperature mechanical properties of the NiAl intermetallic compound under uniaxial compression stress were investigated.It is found that the co-addition of Y and Cu enlarges the difference between the intergranular yield strength and the intragranular yield strength of NiAl grains.Hence,for the resultant NiAl-(Y,Cu) alloy,a mechanically hierarchical structure forms.This is beneficial to improve the room-temperature mechanical response of NiAl alloys; as a result,the resultant alloy with 0.56at％ (Y,Cu) exhibits a remarkably enhanced compression plasticity of about 11.2％.
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