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-Ho-Zr alloys have been investigated in detail.The grain size of the as-cast Mg-Zn-Ho-Zr alloy was greatly decreased by the addition of Ho,and the grain growth during solution treatment was suppressed...-plus-ageing treatment weakened.The addition of Ho can greatly enhance the high-temperature elongation of the Mg-Zn-Ho-Zr alloy,but the increase of high-temperature tensile strength was just a little......
="ChDivSummary">A superhydrophobic surface was successfully constructed to modify the layered double hydroxide(LDH)coatings on aluminum alloy using stearic acid.The characteristics of the coatings were... that the superhydrophobic surface considerably improved the corrosion-resistant performance of the LDH coatings on the aluminum alloy substrate.The formation mechanism of the superhydrophobic surface was proposed......
metals. Pits on 5A02 alloy were easy to initiate and inclined to propagate laterally to form higher corrosion area and shallower corrosion pits, while pits on 6A02 alloy presented the opposite......
Al foam core sandwiches(AFCSs) were successfully fabricated by using a specially designed Zn-Al-Cu based filler alloy via vibration aided liquid phase bonding method.The effects of the vibration on the bonding seam were investigated and the bonding strength between Al foam core and solid Al alloy face sheet was tested by shearing tests.The results show that vibration can significantly improve......
Microstructural Evolution during Partial Remelting of Al-Si Alloys Containing Different Amounts of MagnesiumA.Abedi1,M.Shahmiri2,B.Amir Esgandari2,B.Nami11. Department of Mechanical Engineering... of magnesium on the microstructures of A356 aluminum alloy in as-cast and semi-solid conditions was investigated.The result showed that magnesium refined the size of primary a(Al) phase and eutectic......
rate, a Cu50Zr45Ti5 alloy with various structures was developed. A fully glassy rod and specimens with different sizes and volume fractions of nanocrystals were produced. The relationship between the structure and mechanical properties of the Cu50Zr45Ti5 alloy was investigated. The different structures result in a transition of the deformation mechanism from being dominated by shear banding to being......
) for the light water reactor has gained wide attentions after the Fukushima accident. To enhance the accident-tolerance of the nuclear system, one strategy is to modify the Zr-based alloy cladding surface...-based alloy substrate as well as mechanical integrity under both pull-off and scratch tests. The coating system also presents moderate thermochemical compatibility at 800℃ but degrades above 1000℃ under......
-treated Al-Si-Cu-Mg-Ni alloys: Thermodynamic assessment and experimental investigation for alloy design[J]. Journal of Alloys and Compounds, 2013, 551: 596-606. [10] SALEH M S, OMAR M Z, SYARIF J...热力学模拟方法分析了元素Mn,Fe对半固态A319铝合金的影响,优化了合金成分.但迄今为止,研究对象还局限于Si含量较低的亚共晶铝硅合金,对过共晶铝硅合金的触变性研究甚少.热力学模拟[11]不仅可以缩短研究周期,并能有效实现半固态触变性合金成分的优化设计. 本文作者以Al-Si-Cu-Mg四元系合金为研究对象,基于CALPHAD方法模拟合金在不同成分下的半固态触变性,对理想的半固态触变成形用高硅铝......
emission electron probe micro-analysis (FE-EPMA), with TAP, PETH, LDE2H and LIF analysis crystals used. 3 Results and discussion Figures 1 (a) and (c) show the microstructures of two ingots... corresponding to the melting sequence of that as: L→L+γ→L+γ+MC→L+γ+MC+Laves→γ+MC+ Laves+PS. Fig. 1 Optical micrographs of as-cast microstructure in virgin alloy (a), (b) and alloy A (c), (d) Fig. 2......
for 15min,and then holding in waterat 50C for 10min.The alloys have the lowest transformation thermal hysteresis.Among the four experimental heat treatment processes the gradationally quenchingmakes the alloy have the highest transformation temperature and quenching into oilor water at room temperature makes the alloy have the largest thermal hysteresis.Mi-crostructure examination shows that aging at 2000C......
