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下不同超声功率下制备的ZL114A合金中共晶硅SEM像 Fig. 5 SEM images of eutectic silicon of ZL114A alloy prepared with different ultrasonic power in coordination field 图6 协同场下不同凝固压力下制备的ZL114A合金中共晶硅的SEM像 Fig. 6 SEM images of eutectic silicon of ZL114A alloy prepared with different solidification pressures in coordination field 图7 不同外场作用下ZL114A合金中共晶硅的SEM像 Fig. 7 SEM images of eutectic......
凝固速率对Nb-Ti-Si基合金整体定向凝固组织及固/液界面形态的影响王勇1,郭喜平1(1.陕西省西安市西北工业大学凝固技术国家重点实验室)摘 要:在2050℃的熔体温度下,在自行研制的定向凝固炉内实现了Nb-Ti-Si-Cr-Hf-Al-B-Y超高温合金的有坩埚整体定向凝固.采用XRD,SEM,EDS等方法分析了凝固速率分别为2.5,5,10,20,50和100μm/s时的整体定向凝固组织,组成相的择优取向及固/液界面形貌,并讨论了其共晶生长机制.结果表明:合金的定向凝固组织主要由沿着试棒轴向排列的横截面为多......
pool. The suitable solution treatment temperature of this alloy was 1200 °C. Key words: as-cast alloy 625; solution treatment; microstructure; tensile properties; γ/Laves eutectic 1 Introduction... eutectic, which reduces the solution strengthening effect of the alloy. As a consequence, the mechanical properties of as-cast alloy are reduced [15,16]. It can be found that a small quantity of MC......
is that the element Ce enriched in the liquid-solid interface decreases the eutectic transforming temperature, thus the microtructure of the alloy are refined. The element Ce existing in the alloy participates in the reaction of Fe-Cr-C system, which is the main reason why the eutectic transforming temperature is changed. Key words: Ni-based self-fluxing alloy; rare earths; coating; eutectic temperature; micro......
Effect of erbium on properties and microstructure of Al-Si eutectic alloy邢鹏飞1,高波1,庄艳歆2,刘凯华1,涂赣峰11. School of Materials and Metallurgy, Northeastern University2. Key Laboratory of Electromagnetic Processing of Materials, Northeastern University摘 要:Eutectic Al-12.6 wt.%Si alloys with various contents of the rare earth element Er were prepared......
Effect of erbium on properties and microstructure of Al-Si eutectic alloy邢鹏飞1,高波1,庄艳歆2,刘凯华1,涂赣峰11. School of Materials and Metallurgy, Northeastern University2. Key Laboratory of Electromagnetic Processing of Materials, Northeastern University摘 要:Eutectic Al-12.6 wt.%Si alloys with various contents of the rare earth element Er were prepared......
. The microstructures become more homogeneous and the densities increase notably after semisolid thixoforming. Keyword: spray form; hyper eutectic Al Si alloy; semi solid...>国家自然科学基金!资助项目 ( 59771 0 1 1 ); Semi-solid thixoforming of spray formed high silicon hypereutectic Al-Si alloy Abstract: Thixoforming properties of spray formed......
Diffusion bonding of AlCoCrFeNi2.1 eutectic high entropy alloy to TiAl alloyPeng Li,Shuai Wang,Yueqing Xia,Xiaohu Hao,Honggang DongSchool of Materials Science and Engineering, Dalian University... structures,the microstructure evolution of bonding interface,the elemental diffusion behavior and mechanical property of the diffusion bonded joint between AlCoCrFeNi2.1eutectic high entropy alloy......
Modification Effects of Lanthanum-Rich Mischmetal on A357 Alloy 李华基1,刘昌明1,薛寒松1,李革胜1 (1.College of Mechanical Engineering, Chongqing University,) Abstract:A357 alloy was modified with lanthanum... metal. It is shown that the modification effect of La-rich mischmetal is better than that of strontium in the aspects of refining eutectic silicon, ejecting hydrogen from the melt and improving......
Preparation of Mg-Yb alloy film by electrolysis in the molten LiCl-KCl-YbCl_3 system at low temperature ZHANG Milin1,CHEN Ye1,YE Ke1 (1.Key Laboratory of Superlight Materials & Surface Technology,Ministry of Education,College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China) Key words:LiCl-KCl eutectic; molten salt; Mg-Yb alloy films......