搜索结果: 31-45 共查到“知识库 非晶、微晶金属材料”相关记录150条 . 查询时间(6.935 秒)
Liquid eutectic alloys as a cluster solutions
Liquid metallic alloys Structure factor Pair correlation function
2009/12/2
Purpose: In this research work the results of structure studies for Al0.88Si0.12, Bi0.995Cu0.005, Al0.83Cu0.17 eutectic
and Co0.05Cu0.95 peritectic melts have been presented. The structure parameters...
Magnetic properties of Fe76X2Si8B14 (X=Al, Cr, Mo) amorphous alloys
Institute of Materials Science, University of Silesia Institute of Physics, University of Silesia
2009/12/2
Purpose: The idea of the paper is to study the influence of thermal annealing and alloying additions on magnetic
properties, optimization and crystallization processes in Fe76X2Si8B14 (X=Al, Cr, Mo) ...
Structural changes of Ni-base metallic glasses during thermal activation
Amorphous materials Crystallization of metallic glasses Internal frictions
2009/12/2
Purpose: The paper presents a crystallization process of Ni68.7Cr6.6Fe2.65Si7.8B14C0.25 metallic glasses. The
Ni68.7Cr6.6Fe2.65Si7.8B14C0.25 metallic glasses was produced by the CBMS method with cool...
Magnetic and mechanical properties in FeXSiB (X=Cu, Zr, Co) amorphous alloys
Amorphous materials Nanocrystalline alloys Soft magnetic properties
2009/12/2
Purpose: The idea of the paper is to study the influence of different alloying additions (Cu, Zr, Nb) on structural
relaxation, crystallization, and improvement of soft magnetic properties in amorpho...
Application of the artificial neural networks for prediction of magnetic saturation of metallic amorphous alloys
Computational material science Artificial neural networks Amorphous materials
2009/12/2
Purpose: The aim of the work is to employ the artificial neural networks for prediction of magnetic saturation of
the amorphous alloys with the iron and cobalt matrix.
Design/methodology/approach: I...
Thermal and magnetic properties of selected Fe-based metallic glasses
Amorphous materials Metallic glasses Soft magnetic properties
2009/12/2
Purpose: The work presents a thermal stability characterization and soft magnetic properties analysis of selected
Fe-based metallic glasses.
Design/methodology/approach: The studies were performed ...
Microstructure of ultrafine-grained Al produced by severe plastic deformation
Nanomaterials Al Transmission Electron Microscopy
2009/12/1
Purpose: The structure of Al subjected to severe plastic deformation by means of compression with oscillatory torsion
and by combined method (compression followed by compression with oscillatory tor...
Crystallisation process of Ni-base metallic glasses by electrical resistance measurements
Amorphous materials Crystallization of metallic glasses Electrical resistance measurements
2009/12/1
Purpose: The paper presents a crystallization process of Ni68,7Cr6,6Fe2,65Si7,8B14C0,25 metallic glasses. The
Ni68,7Cr6,6Fe2,65Si7,8B14C0,25 metallic glasses were produced by the CBMS method for t...
Crystallization of amorphous Co77Si11.5B11.5 alloy
Amorphous materials Electrical properties and magnetic properties Heat treatment annealing
2009/12/1
Purpose: The investigation results of crystallization of amorphous Co77Si11.5B11.5 alloy in tape form, obtained
by melt spinning method during annealing in temperature range 373-873 K with step of 50...
Investigations of crystallization behaviour of Co80Si9B11 amorphous alloy
Materials Amorphous Materials Nanomaterials Heat treatment
2009/12/1
Purpose: This paper describes crystallization kinetics and changes of magnetic properties involved by process of
crystallization of the amorphous Co80Si9B11 alloy.
Design/methodology/approach: The f...
Pd替代对Ti-Zr-Ni准晶合金结构的影响
准晶 Ti-Zr-Ni合金 Pd添加
2009/10/15
针对Ti45Zr38Ni17与Ti40Zr40Ni20准晶合金用X射线衍射仪、透射电子显微镜与金相等手段研究了不同含量的Pd替代对其结构的影响. 在吸铸态下, 前一个合金形成了二十面体准晶相(IQC)与少量配位数为8的bcc β-(Ti, Zr)相,用2%Pd (原子分数, 下同)对合金的Ti或Zr组元替代, 抑制了β-(Ti, Zr)相析出并促使配位数为14的MgZn2结构的简单六方C14 La...
抽拉速率跃迁对定向凝固单晶高温合金DD3一次枝晶间距和微观偏析的影响
单晶高温合金 生长速率 跃迁
2009/10/15
采用液态金属冷却高温度梯度定向凝固设备, 研究了抽拉速率跃迁对单晶高温合金DD3一次枝晶间距和微观偏析的影响. 结果表明, 单晶高温合金枝晶一次间距表现出明显的历史相关性.当抽拉速率(或生长速率)分别从600和300μm/s跃迁到100 μm/s和直接以100 μm/s速率生长时, 一次间距分别为56.5, 86和111.5 μm. 而生长速率分别从50和100 μm/s跃迁到300 μm/s和直...
快速凝固可明显细化NiAl-Cr(Mo)-0.5Hf共晶合金的组织, 使合金中的富Hf相部分以 Hf固溶体的形式存在, 改善了Heusler相(Ni2AlHf)和Hf固溶体的形态和分布, 明显提高了合金的室温压缩性能. 快凝合金热等静压或高温热处理后, 合金中的Heusler相进一步向Hf固溶体转变, 而且Heusler相和Hf固溶体均由原来的近连续分布转变为不连续分布；热等静压处理快凝合金中的初...
相场法模拟动力学各向异性对过冷熔体中晶体生长的影响
动力学各向异性 分形生长 枝晶生长
2009/10/15
采用相场模型定量模拟了动力学各向异性作用下过冷熔体中的晶体生长过程. 模拟结果表明, 仅存在动力学各向异性时, 各向异性系数大小对生长方式选择起着决定性作用. 当各向异性较低时, 固相以分形方式生长, 在生长过程中不存在占优势的生长方向, 同时也不存在稳态生长状态; 而当各向异性系数大于0.02时, 固相以枝晶方式沿<110>方向生长. 进一步研究表明, 枝晶生长稳定性系数随各向异性值的增加而增加...