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wall of substructure. The dimples would develop from small second phase particles. Thus, the mechanism of ductile fracture is explained. The neck prior to rupture exists in tensile test rests from... at room temperature, investigations to improve the properties of Mg alloys with LPS structure as second phase were focused on refining the LPS structure or applying deformation treatment[12-13]. While......
;2(a, b), the number of small particles on grain boundaries decreases obviously after Ce addition. Many spherical second phase particles with a size of ~3.6 μm are formed in the interior of the grains. The wettability of these particles and the copper matrix is poor, leading to formation of the spherical profile (Fig. 2(c)). These second phase particles are Ce, Pb compounds. The molar......
of the fine second phase particles increases with the cold rolling reduction before the annealing treatment. The more the fine second phase particles, the higher the specific capacitance... obviously. Key words: 3003 aluminum alloy; specific capacitance; strain; dislocation density; second phase; cold rolling 3003铝合金是一种重要的电容器用阴极材料[1-7], 工业生产中都是以铝箔产品形式供货, 其高比电容量一直是材料科学工程者追求......
J. Cent. South Univ. (2020) 27: 478-489 DOI: https://doi.org/10.1007/s11771-020-4310-5 Effect of moving baffle on average velocity and mixing of binary particles in rotating drums ZHANG Li-dong(张立栋... the motion and mixing of particles in rotating drums. To obtain its influence on binary particles, horizontal rotating drums provided with a moving baffle were investigated by discrete element method (DEM......
.%) alloys caused the formation of different types of Al-Li precipitates: Al3Li, AlLi and Li3Al2, respectively. Also, considerable quantities of Mg2Si phase particles were found in the three alloys... type, morphology and distribution. Key words: Mg-Li alloy; Al-Si eutectic; second phase; tensile strength; elongation 1 Introduction Magnesium (Mg) alloys are the lightest metallic material used......
of second-phase particles on the properties of W-based materials under high-heat loading[J]. Nuclear Materials and Energy, 2016, 9: 399-404. [35] TAN X Y, LUO L M, LU Z L, LUO G N, ZAN X, CHENG J G, WU.... Key words: tungsten based materials; plasma facing material; heat load; second phase doping; superfine grain tungsten Foundation item: Project(2014GB121001B) supported by the National Magnetic......
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X80管线钢的冲击断裂行为邓伟1,高秀华1,秦小梅1,赵德文1,杜林秀1,王国栋1(1.辽宁省沈阳市东北大学轧制技术及连轧自动化国家重点实验室)摘 要:在-20和-60℃对X80管线钢进行Charpy冲击实验,用SEM-EDS对断口进行形貌和夹杂物成分分析,并将断口切开进行金相和EBSD观察,研究X80管线钢的冲击断裂行为.结果表明:温度对X80管线钢最大冲击载荷影响较小,但随实验温度降低,裂纹形成功,裂纹扩展功和止裂后吸收的能量显著减小.在冲击断裂过程中强烈的拉应力作用使断口附近产生变形带,晶粒沿与主裂纹垂直......
the effect of freezing of the silicon phase on SiC particles in aluminum hypereutectic composites. They found that in the freezing of these composites, primary silicon particles first nucleate onto SiC... in the first stage. In the second stage, the temperature of molten aluminum was reduced to 610-630 °C. Simultaneously, the preheated (at 600 °C) oxidized SiC particles were injected in graphite......
] MUKHOPADHYAY A K. On the nature of the second phase particles present in an as-cast Al-Cu-Mg-Ag alloy[J]. Scripta Materialia, 1999, 41(6): 667-672. [10] MONDAL C, MUKHOPADHYAY A K. On the nature of T... structure decreases with the increase of holding time and disappears after 24 h. The size and morphology of Al7Cu2Fe particles exhibit no change during the heat treatment. It is found that the Al2CuMg phase......
