热挤+冷轧Al-0.2Sc-0.04（Zr,Yb）合金的力学性能和导电性

陈伟; 陈雪姣; 魏瑞启; 蔡彬

doi:10.15980/j.tzzz.2016.06.030

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热挤+冷轧Al-0.2Sc-0.04（Zr,Yb）合金的力学性能和导电性
Mechanical and Electrical Conductive Properties of Al-0.2Sc-0.04（Zr,Yb） Alloys after Hot Extrusion and Cold Rolling
2016年36卷第6期页码：660-663
纸质出版日期： 2016 ，
DOI： 10.15980/j.tzzz.2016.06.030

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[1]陈伟,陈雪姣,魏瑞启,蔡彬.热挤+冷轧Al-0.2Sc-0.04(Zr,Yb)合金的力学性能和导电性[J].特种铸造及有色合金,2016,36(06):660-663.

Chen Wei, Chen Xuejiao, Wei Ruiqi, et al. Mechanical and Electrical Conductive Properties of Al-0.2Sc-0.04（Zr,Yb） Alloys after Hot Extrusion and Cold Rolling[J]. Special Casting & Nonferrous Alloys, 2016,36(6):660-663.
[1]陈伟,陈雪姣,魏瑞启,蔡彬.热挤+冷轧Al-0.2Sc-0.04(Zr,Yb)合金的力学性能和导电性[J].特种铸造及有色合金,2016,36(06):660-663. DOI： 10.15980/j.tzzz.2016.06.030.

Chen Wei, Chen Xuejiao, Wei Ruiqi, et al. Mechanical and Electrical Conductive Properties of Al-0.2Sc-0.04（Zr,Yb） Alloys after Hot Extrusion and Cold Rolling[J]. Special Casting & Nonferrous Alloys, 2016,36(6):660-663. DOI： 10.15980/j.tzzz.2016.06.030.

摘要

研究了不同含量Yb部分替换Zr对热挤+冷轧态Al-0.2Sc-0.04（Zr

Yb）合金力学性能和导电性的影响。发现只有Yb含量为0.01%和0.02%的Al-0.2Sc-0.04（Zr

Yb）合金具有明显的时效强化峰

最佳时效温度在330℃左右。Yb含量为0.01%和0.02%的合金的屈服强度分别为188.1和177.5MPa

抗拉强度分别为212.9和207.3MPa。过量Yb替换Zr反而导致力学性能降低。冷轧能进一步提高合金导电性。综合结果表明

Yb含量为0.02%的Al-0.2Sc-0.04（Zr

Yb）合金兼具优良的力学性能和良好的导电性能。

Abstract

The effects of part substitution of Zr by Yb（Yb=0

0.01%

0.02%

0.03%

and 0.04%）on the mechanical and electrical conductive properties of Al-0.2Sc-0.04（Zr

Yb）alloys were investigated.It is found that with only 0.01% and 0.02% Yb substituted for Zr

Al-0.2Sc-0.04（Zr

Yb）alloys exhibit an apparent ageing-hardening peak.The optimum ageing temperature is around 330℃.For the alloys partially substituted by 0.01% and 0.02% Yb

the corresponding yield stresses reaches 188.1and177.5 MPa

while the tensile strength is 212.9and 207.3 MPa

respectively.Excessive substitution of Zr by Yb

the decrease of mechanical properties can be observed.The results show that the electrical conductivity of the alloy can further improved by cold rolling.Al-0.2Sc-0.04（Zr

Yb）alloys with the desirable comprehensive properties can be obtained by the part substitution of Zr by 0.02% Yb.