摘要
探究不同变形量形变热处理对铝电工圆杆导电率及抗拉强度的影响。结果表明,随着轧制变形量的增加,试样的导电率先增加后降低,其抗拉强度得到较大的提升。形变时效后,试样的晶界薄化,组织更加均匀,基体中第二相粒子的含量增加,且出现新相SiB_6、Al_(3.21)Si_(0.47)、Cu_3Fe_(17)、Al_2FeSi。通过"535℃×5h固溶处理+83%轧制+190℃×10h时效"的形变热处理后,试样抗拉强度达到234MPa的峰值,导电率为53.45%IACS。
Effect of deformation aging treatment on conductivity and tensile strength of electrical round aluminum rod was explored. The results show that with increase of rolling deformation, electrical conductivity first rises and then drops, and tensile strength is improved obviously. After deformation aging treatment, grain boundary of samples becomes thinner, and microstructure is more uniform and well- distributed. The second phases of specimen rise visibly, and new phases （SiB6, A13. 21Si0.47, Cu3Fe17, and AI2FeSi） exist in matrix. Tensile strength and electrical conductivity is 234 MPa and 53.45% IACS respectively under thermo-mechanical treatment of 535 ℃ × 5 h solid solution treatment, rolling （83%）, and 190 ℃×10 h aging treatment.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2017年第5期54-58,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
贵州省工业攻关项目(黔科合GZ字[2015]3004-2)
贵州大学大学生"SRT计划"项目(2015-153)
关键词
铝合金电工圆杆
形变时效
导电率
抗拉强度
aluminum electrical round rods
deformation aging treatment
electrical conductivity
tensile strength
