Aging Behavior and Electric Conductivity of a New Heat Resistant Al-0.2Sc-0.04Zr（0.01B） Alloy

Li Jinwen; Cai Bin; Zhou Weiwei

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Aging Behavior and Electric Conductivity of a New Heat Resistant Al-0.2Sc-0.04Zr（0.01B） Alloy
Vol. 31, Issue 11, Pages: 1070-1073(2011)
Published： 2011 ，
DOI：

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[1]李金文,蔡彬,周伟伟.Al-0.2Sc-0.04Zr(0.01B)合金的时效行为和导电性[J].特种铸造及有色合金,2011,31(11):1070-1073.

Li Jinwen, Cai Bin, Zhou Weiwei. Aging Behavior and Electric Conductivity of a New Heat Resistant Al-0.2Sc-0.04Zr（0.01B） Alloy. [J]. Special Casting & Nonferrous Alloys 31(11):1070-1073(2011)
[1]李金文,蔡彬,周伟伟.Al-0.2Sc-0.04Zr(0.01B)合金的时效行为和导电性[J].特种铸造及有色合金,2011,31(11):1070-1073. DOI：

Li Jinwen, Cai Bin, Zhou Weiwei. Aging Behavior and Electric Conductivity of a New Heat Resistant Al-0.2Sc-0.04Zr（0.01B） Alloy. [J]. Special Casting & Nonferrous Alloys 31(11):1070-1073(2011) DOI：

摘要

研究了Al-0.2Sc-0.04Zr（0.01B）合金的时效行为和导电性。发现合金最佳时效温度为330℃

最佳时效时间为189min。热挤压并不能进一步提高合金的最佳强度水平

但能大幅提高合金的伸长率;添加B虽使合金最佳时效强度水平略有降低

但能改善均匀化状态合金的低温导电性。综合结果表明

挤压态Al-0.2Sc-0.04Zr合金具有最佳的力学性能和导电性

其抗拉强度为160MPa

20℃时导电性相当于国际标准软铜的63%。

Abstract

Aging behavior and electric conductivity of the heat resistant Al-0.2Sc-0.04Zr（0.01B） alloy were investigated.The results show that the optimal aging condition of the heat resistant Al-0.2Sc-0.04Zr（0.01B） alloy is 330 ℃ for 189 min.Hot extrusion can greatly improve the elongation

however its effects on the maximum strength of the alloys can be ignored.The B addition can decrease the electric resistance of homogenized alloys at low temperature with the slight decrease of maximum strength aged at 300

80 ℃.In all

the hot-extruded Al-0.2Sc-0.04Zr alloy exhibits the optimized mechanical properties and conductivity.The tensile strength reaches up to 160 MPa

and the electric conductivity at 20 ℃ is 63%IACS.