Effects of Cr and Y Elements on Microstructure and Properties of Cu-Te alloy

Ya Bin; Guo Tai; Meng Linggang; Zhou Bingwen; Feng Bin; Zhang Xingguo

doi:10.15980/j.tzzz.2022.10.003

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Effects of Cr and Y Elements on Microstructure and Properties of Cu-Te alloy
Vol. 42, Issue 10, Pages: 1202-1209(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.10.003

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Ya Bin, Guo Tai, Meng Linggang, et al. Effects of Cr and Y Elements on Microstructure and Properties of Cu-Te alloy. [J]. Special Casting & Nonferrous Alloys 42(10):1202-1209(2022)
DOI：

Ya Bin, Guo Tai, Meng Linggang, et al. Effects of Cr and Y Elements on Microstructure and Properties of Cu-Te alloy. [J]. Special Casting & Nonferrous Alloys 42(10):1202-1209(2022) DOI： 10.15980/j.tzzz.2022.10.003.

摘要

采用真空感应熔炼法制备了Cu-Cr-Te合金和Cu-Cr-Te-Y合金，研究了Cr元素及稀土Y元素对铸态Cu-Te合金组织与性能的影响。结果表明，Cu-Cr-Te合金组织由Cu基体、Cu

Te颗粒相和Cr单质构成，添加Y后，组织中出现Te

/TeY密集相。Cu-Cr-Te合金的抗拉强度及硬度随着Cr含量的增加呈上升趋势，电导率和伸长率下降。加入Y后，合金组织均匀致密，晶粒尺寸细化，晶界清晰。Cu-0.7Cr-0.5Te-0.3Y合金的抗拉强度为235 MPa

较Cu-Te合金提高了46.88%。

Abstract

Cu-Cr-Te and Cu-Cr-Te-Y alloys were prepared by vacuum induction melting. The effects of chromium and rare earth yttrium addition on the microstructure and properties of as-cast Cu-Te alloys were investigated. The results indicate that the microstructure of Cu-Cr-Te alloy is composed of Cu matrix

Te granular phase and Cr

and the Te

/TeY dense phase appears in the microstructure after Y addition. The tensile strength and hardness of Cu-Cr-Te alloy present an upward trend with the increase of Cr content

while the conductivity and elongation are decreased. After Y addition

the structure is compact with finer grain size and clear grain boundary. The tensile strength of Cu-0.7 Cr-0.5 Te-0.3 Y alloy is 235 MPa

which is 46.88% higher than that of Cu-Te alloy.