| 喷射沉积含Sc超高强铝合金固溶处理组织与性能分析 |
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| 引用本文： | 杨建华,李振亮,任慧平,王玉峰,陈伟,翟景.喷射沉积含Sc超高强铝合金固溶处理组织与性能分析[J].包头钢铁学院学报,2009,28(1). |
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| 作者姓名： | 杨建华 李振亮 任慧平 王玉峰 陈伟 翟景 |
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| 作者单位： | 杨建华,李振亮,任慧平,王玉峰,YANG Jian-hua,LI Zheng-liang,REN Hui-ping,WANG Yu-feng(内蒙古科技大学材料与冶金学院,内蒙古,包头,014010);陈伟,翟景,CHEN Wei,ZAI Jing(中国兵器科学研究院,宁波分院,浙江,宁波,315103)
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| 基金项目： | 内蒙古自治区自然科学基金，内蒙古高等学校科学研究项目 |
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| 摘 要： | 采用金相、扫描电镜、X射线衍射分析方法,研究了不同工艺条件下喷射沉积Al-12Zn-2.4Mg-1.1Cu-0.20Zr-0.30Sc-0.30Ni合金的微观组织与力学性能.结果表明,过喷粉颗粒的大小为3~15μm,是沉积坯等轴晶平均直径的1/6~3/4;挤压坯经460℃/0.5 h+480℃/2 h二级固溶处理后Zn,Mg,Cu等溶质元素回溶到Al基体中,固溶后未见形成W(ScCu6.6~4Al5.4~8)相,合金抗拉强度由挤压态的410 MPa增加到固溶态的750 MPa,增幅为82.9%;再经T6时效后合金的抗拉强度可达855 MPa.凝固过程形成的粗大难溶DO23结构Al3(Sc,Zr)粒子是影响合金抗拉强度的重要原因.
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| 关 键 词： | 超高强铝合金 固溶处理 强化机理 喷射沉积 |
Study on microstructures and properties of the spray-deposition ultrahigh strength aluminum alloy containing Sc during solid-solution treatment |
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| YANG Jian-hua,LI Zheng-liang,REN Hui-ping,WANG Yu-feng,CHEN Wei,ZAI Jing.Study on microstructures and properties of the spray-deposition ultrahigh strength aluminum alloy containing Sc during solid-solution treatment[J].Journal of Baotou University of Iron and Steel Technology,2009,28(1). |
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| Authors: | YANG Jian-hua LI Zheng-liang REN Hui-ping WANG Yu-feng CHEN Wei ZAI Jing |
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| Affiliation: | 1.Material and Metallurgy School;Inner Mongolia University of Science and Technology;Baotou 014010;China;2.Ningbo Branch;China Academy of Ordnance Science;Ningbo 315103;China |
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| Abstract: | An Al-12Zn-2.4Mg-1.1Cu-0.20Zr-0.30Sc-0.30Ni ultrahigh strength aluminum alloy was prepared by spray deposition.Its mechanical properties and microstructure under different heat treatment conditions were investigated by OM,SEM and X-ray analysis.The results indicate that sprayed powder with the size about 3～15 μm is 1/6～3/4 that of the equation grains in the as-deposited alloy;Zn,Mg,Cu and other elements return to Al-matrix,and the W phase(ScCu6.6-4Al5.4-8)didn t form after 460 ℃/0.5 h+480 ℃/2 h two-step so... |
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| Keywords: | ultrahigh strength aluninum alloy solid-solution treatment strengthening mechanism spray deposition |
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