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images of 2618 alloy at low(a) and high(c) magnifications, and 2618+Zr alloy at low(b) and high(d) magnifications[83] SHYAM等[87]将Mn和Zr微合金化,使Al-Cu合金中的亚稳θ′相的最高稳定温度为350 ℃.Al-Cu-Mn-Zr合金由于Mn和Zr在稳定亚稳θ′相中的作用,形成了更... processing manual[M]. Changsha: Central South University Press, 2000. [9] PIRHAYATI P, AVAL H J. Effect of post-heat treatment on friction surfaced Al-Cu-Mg alloy coating containing Ag[J]. Surface......
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, the distance of dendritic structure decreases, the structure of the alloy can be refined and the micro-hardness can be enhanced 70% or so. With additions of trace Sc to Al-Cu alloy, when the mass fraction... with Al and Cu to form W(AlCuSc) phase, resulting in decrement of solid solubility of Cu in α(Al) solid solution and the amount of CuAl2(θ′) phases, reducing the properties of alloy. Key words: rare......
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旋转磁场对Al-Cu合金凝固组织动力学行为的影响杨效田1,李霞2,李锡恩3,李文生1(1.甘肃省兰州市兰州理工大学 材料科学与工程学院2.兰州交通大学 化学与生物工程学院,兰州 7300703.兰州商学院 教务处,兰州 730000)摘 要:以Al-(4%~5%)Cu合金为试验材料,研究旋转磁场环境对Al-Cu合金凝固组织的影响.将装于Φ16mm坩埚中Al-Cu合金在电阻炉中加热熔化,然后迅速放置于旋转磁场之中,让其在旋转磁场中冷却凝固.采用光学显微镜观察合金凝固组织变化.结果发现,旋转磁场对合金的凝固组织产生明显的细化效果,使粗大的树枝晶破碎,凝固组织不再是树枝晶结构,而呈现近等轴晶颗粒,分布较均匀,晶间距也明显减小.同时发现,不同的磁场强度对合金的凝固组织形貌有不同的影响,从细化晶粒角度讲,100V电......
后的组织状态最为理想. 关键词:Al-Cu合金；多向压缩变形；亚晶；剪切带 中图分类号:TG146.2 文献标志码:A Grain refinement in Al-Cu alloy processed... Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083, China) Abstract: Al-Cu alloy containing θ″ precipitated phase......
Aging behavior of Al2O3 short fiber reinforced Al-Cu alloy composites GENG Lin(耿 林), XU Hong-yu(许虹宇), YU Kuai(余 快), WANG Hong-lin(王洪林) School of Materials Science and Engineering, Harbin..., such as Al18B4O33 whisker, can react easily with Mg containing aluminum alloys, resulting in a decrease of properties of the composites[6-7]. Therefore, Al-Cu alloy becomes a suitable matrix alloy......
续变形过程中析出稳定相后,稳定相的回溶和再析出交替进行. 关键词:Al-Cu 合金；强塑性变形；析出相回溶；再析出 中图分类号:TG 146.2 文献标识码:A Re-precipitate behavior of supersaturated solid solution of Al-Cu alloy caused... in aged Al-Cu alloy. The re-precipitation behavior of strain-induced supersaturated solid solution during subsequent deformation was investigated by X-ray diffraction and transmission electron......
