Microstructure of the Cu-Cr-Zr-Mg Alloy Prepared by the Improved Vacuum Induction Melting Process

Hou Bin1; Liu song1; Lu liangliang1; Kang le2; Chen Xiaohua3; Wang Zidong1

doi:10.15980/j.tzzz.2013.08.012

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Microstructure of the Cu-Cr-Zr-Mg Alloy Prepared by the Improved Vacuum Induction Melting Process
Vol. 33, Issue 8, Pages: 699-702(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.08.012

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[1]侯彬,刘松,陆亮亮,康乐,陈晓华,王自东.真空熔炼Cu-0.4Cr-0.2Zr-0.15Mg合金的组织分析[J].特种铸造及有色合金,2013,33(08):699-702.

Hou Bin1, Liu song1, Lu liangliang1, et al. Microstructure of the Cu-Cr-Zr-Mg Alloy Prepared by the Improved Vacuum Induction Melting Process. [J]. Special Casting & Nonferrous Alloys 33(8):699-702(2013)
[1]侯彬,刘松,陆亮亮,康乐,陈晓华,王自东.真空熔炼Cu-0.4Cr-0.2Zr-0.15Mg合金的组织分析[J].特种铸造及有色合金,2013,33(08):699-702. DOI： 10.15980/j.tzzz.2013.08.012.

Hou Bin1, Liu song1, Lu liangliang1, et al. Microstructure of the Cu-Cr-Zr-Mg Alloy Prepared by the Improved Vacuum Induction Melting Process. [J]. Special Casting & Nonferrous Alloys 33(8):699-702(2013) DOI： 10.15980/j.tzzz.2013.08.012.

摘要

通过改进中频感应炉真空熔炼工艺

制备出组织比较致密的铸态Cu-0.4Cr-0.2Zr-0.15Mg合金。改进工艺后试样的抗拉强度和伸长率

比原工艺分别提高了30%和60%以上。通过断口SEM图像及其应力-应变曲线

分析试样塑性、韧性提高的原因。通过SEM、TEM及EDS分析

发现在铸态试样中含有纳米尺寸的Cr单质

这些Cr单质以方形或圆形弥散分布在基体内

在Zr富集区含有Cu5Zr

在铜基体和Zr富集区内还有亚稳定Heusler相CrCu2（Zr

Mg）。

Abstract

The Cu-0.4Cr-0.2Zr-0.15Mg alloy with sound structure was prepared using an improved medium frequency induction furnace.The tensile strength and elongation are increased by 30% and by 60%

respectively

compared with the initial specimen.The improvement mechanism of the strength and plasticity was analyzed by SEM（scanning electron microscope） and stress strain curve analysis.The analyses of SEM

TEM（transmission electron microscope） and EDS（energy dispersed spectrum） show that quadrate and spherical nano-scale Cr particles are distributed dispersedly in the copper matrix

and there exists Cu5Zr in Zr enrichment area

and Heusler phase CrCu2（Zr

Mg）can be observed in the copper matrix and Zr enrichment area.