Kim Yong-Ho, Yoo Hyo-Sang, Lee Kyu-Seok, Lee Sung-Ho, Son Hyeon-Taek
Korea Institute of Industrial Technology, 6 Cheomdan-Gwagiro 208 Beon-gil, Buk-gu, Gwangju, 61012, Republick of Korea.
J Nanosci Nanotechnol. 2021 Mar 1;21(3):2015-2018. doi: 10.1166/jnn.2021.18939.
Microstructure and properties of Al-2 wt.%Zn-1 wt.%Cu-Mg ( = 0.1, 0.3, 0.5, 0.7 wt.%) alloy extrusion materials were investigated. The lattice constants for the (311) plane increased to 4.046858, 4.048483, 4.050114 and 4.051149 Å with the addition of 0.1, 0.3, 0.5, and 0.7 wt.% of elemental Mg. The average grain size of the as-extruded Al alloys was found to be 328.7, 297.7, 187.0 and 159.3 μm for the alloys with 0.1, 0.3, 0.5, and 0.7 wt.% Mg content, respectively. The changes in the electrical conductivity by the addition of elemental Mg in Al-2 wt.%Zn-1 wt.%Cu alloy was determined, and it was found that for the addition of 0.1, 0.3, 0.5, and 0.7 wt.% Mg, the conductivity decreased to 51.62, 49.74, 48.26 and 46.80 %IACS. The ultimate tensile strength of Al-2 wt.%Zn-1 wt.%Cu-0.7 wt.%Mg alloy extrusion was increased to 203.55 MPa. Thus, this study demonstrated the correlation between the electrical conductivity and strength for the Al-2 wt.%Zn-1 wt.%Cu-xMg alloys.
研究了Al-2 wt.%Zn-1 wt.%Cu-Mg（=0.1、0.3、0.5、0.7 wt.%）合金挤压材料的微观结构和性能。随着元素Mg添加量分别为0.1、0.3、0.5和0.7 wt.%，（311）面的晶格常数增加到4.046858、4.048483、4.050114和4.051149 Å。对于Mg含量分别为0.1、0.3、0.5和0.7 wt.%的挤压铝合金，发现其平均晶粒尺寸分别为328.7、297.7、187.0和159.3 μm。测定了在Al-2 wt.%Zn-1 wt.%Cu合金中添加元素Mg后电导率的变化，发现添加0.1、0.3、0.5和0.7 wt.%的Mg时，电导率分别降至51.62、49.74、48.26和46.80 %IACS。Al-2 wt.%Zn-1 wt.%Cu-0.7 wt.%Mg合金挤压件的极限抗拉强度提高到203.55 MPa。因此，本研究证明了Al-2 wt.%Zn-1 wt.%Cu-xMg合金电导率与强度之间的相关性。
