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%。
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 300~380 ℃.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.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2011年第11期1070-1073,共4页
Special Casting & Nonferrous Alloys
基金
中国教育部留学回国科研启动资金资助项目
关键词
Al-Sc-Zr(B)合金
力学性能
电学性能
Heat Resistant Al-0.2Sc-0.04Zr（0.01B） Alloy
Mechanical Properties
Electric Conductivity
