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using hot-rolling when A4045 aluminum alloy was used as intermediate materials. The results show that at 570℃ depending on the heat gained from deforming, there are perfect transient liquid phases in intermediate layer A4045 aluminum alloy and a series of physical metallurgical behaviors like TLP jointing process on the bonding interface. The interface of two types of core materials gains good bonding......
(AlFeSi). The transformation products α(AlFeSi) are nano-sized particles. An experimental phenomena, 'minimum solution point during intermediate annealing process, is also found and deemed...; microstructure; intermediate annealing 铝箔广泛应用于包装, 电气, 建筑等领域, 随着21世纪生物工程, 能源, 环保等技术的发展, 铝箔的应用领域及相关技术的拓展必将越来越广阔. 目前工业化大生产的铝箔最小厚度在0.0055~0.006mm, 进一步减小铝箔的厚度和提高成品率是铝箔工业的重要发展方向[1-3]. 铝箔是一种极限加工产品, 必须......
稀土对AlTiC细化剂组织及细化效果的影响 谈荣生1,曾宇乔1,梁超1,蒋建清1,于金1,胡宪正1 (1.东南大学材料科学与工程系,江苏,南京,210096) 摘要:应用自蔓延高温合成法制备出含稀土及不含稀土两种AlTiC细化剂. 应用扫描电镜及X射线衍射等手段分析了中间合金及细化剂的成分,组织和形貌. 结果表明: 稀土对反应合成TiC微细颗粒具有重要的促进作用, 添加稀土明显加快反应速度; 在AlTiCRE细化剂中, 由于稀土的作用, 改变了TiAl3和TiC的形态和分布, 减小了TiC的聚集倾向, 细化了TiC颗粒尺寸, 从而增加了形核基底数. AlTiCRE细化晶粒的效果优于AlTiC, 而且稀土还具有明显细化枝晶组织的作用. 关键词:金属材料; AlTiC; 细化剂; TiC; 自蔓延高温合成; 细化效果; 稀土; [全文内容正在添加中] ......
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First-principles calculations of LaNi_(5-x)Sn_xH_y intermetallics and intermediate phase Deheng SHI1,Yinglu ZHAO2,Hailiang HUO1,Dong CHEN1,Benhai YU1,Jingdong CHEN1 (1.College of Physics... structures of LaNi_(4.75)Sn_(0.25) intermetallics and LaNi_(4.5)Sn_(0.5)H_y (y=2.0, 2.5) intermediate phase have been investigated by the full-potential linearized augmented plane wave (FP-LAPW) method......
温度对AlTiC中间合金内部组织及细化性能的影响候运丰1,王永锋2,夏天东1,赵文军1,刘天佐11. 甘肃省有色金属新材料国家重点实验室2. 西安航空技术高等专科学校机械工程系摘 要:采用接触法来制备AlTiC中间合金.通过X-ray衍射和SEM扫描电镜及EDS能谱分析发现,随着温度的改变,TiC和Al3Ti粒子的形态和分布会发生相应的变化,而TiC和Al3Ti粒子的形态和分布的变化很大程度上影响着AlTiC中间合金的细化效果.研究结果表明:在800℃时,AlTiC中间合金对工业纯铝的细化效果最好.关键词:AlTiC;Al3Ti;TiC;晶粒细化剂;细化机理;中间合金;......
Effect of Pressure on Intermediate Valence States in Cerium Kondo Compounds Kagayama T1,Ohashi M2,Kaji S2,Lacerda A H3,Smith J L3,Oomi G2 (1.Department of Mechanical Engineering and Materials..., Los Alamos, NM 87545, USA) Abstract:Electrical resistance, thermal expansion, lattice constants of the intermediate valence materials, α-Ce and CeBe13, were measured at high pressure. It is found......
J. Cent. South Univ. (2019) 26: 984-999 DOI: https://doi.org/10.1007/s11771-019-4065-z Strainburst process of marble in tunnel-excavation-induced stress path considering intermediate principal... triaxial unloading rockburst tests and a new test path in which the intermediate principal stress was varied. During the tests, a high-speed camera was used to record the strainburst process, and an acoustic......
Influence of intermediate principal stress on failure mechanism of hard rock with a pre-existing circular openingZHANG She-rong(张社荣)1, SUN Bo(孙博)1, 2, WANG Chao(王超)1, YAN Lei(严磊)3, 4(1. State Key... of the magnitude and direction of the intermediate principal stress on failure mechanism of hard rock with a pre-existing circular opening were studied by carrying out true triaxial tests on siltstone......
