时效工艺及镁硅含量对Al-Er-Zr-B合金性能的影响  

Effect of the aging process and content of Mg/Si on properties of Al-Er-Zr-B alloy

作　　者：邱跃武 杨昇[1] 蔡彬[1] 侯雅尘 赖存明 QIU Yue-wu YANG Sheng CAI Bin HOU Ya-chen LAI Cun-ming(Physical Engineering College, Zhengzhou University, Zhengzhou 450001, China)

机构地区：[1]郑州大学物理工程学院,河南郑州450001

出　　处：《轻合金加工技术》2016年第11期59-63,共5页Light Alloy Fabrication Technology

基　　金：国家自然科学基金(51371160)

摘　　要：试验研究了在Al-Er-Zr-B合金中加入不同含量Mg、Si元素及时效工艺对其性能的影响。结果表明,随着添加的Mg、Si总量的增加,合金的抗拉强度提高而导电率下降;提高时效温度会使合金的强度显著下降、导电率上升。210℃以下时效试样经热保持后,由于β″相转变为β'相或β相导致强度热保持率低;继续提高时效温度后这种转变带来的影响减弱,并且热保持过程中由于再结晶受到Zr B2和含Er相的抑制,热保持率已接近90%。时效温度为210℃时Mg、Si总质量分数为0.8%的试样抗拉强度和导电性匹配很好。The properties of Al-Er-Zr-B alloy have been investigated with different contents of Mg and Si elements and aging parameters. The results show that as the total content of Mg and Si elements increases in the Al-Er-Zr-B alloy, tensile strength increases and conductivity decreases. As the aging temperature increases, tensile strength decreases significantly and con- ductivity increases. The strength heat-resistance of the specimen aged below 210℃ is de- creased, because the β＂ phase has been transformed to the β＇ phase and the β phase. With the aging temperature further increasing, the effect of Mg2 Si is weakened. Rate of the strength heat-resistance is elose to 90%, because recrystallization is inhibited by ZrB2 and the phase containing Er. With 0.8% total mass fraction of Mg and Si elements, the tensile strength and electrical conductivity of the sample are well matched at the aging temperature of 210℃.

关 键 词：高强耐热性能 导电铝合金 ZRB2 MG2SI 

分 类 号：TG146.21[一般工业技术—材料科学与工程]