Phase formation and transport properties of vapor-solid reacted AIMI MgB2 superconductors [0.03%]
气相-固相反应AIMI MgB2超导材料的相形成和输运特性
F Wan,J Kwon,M D Sumption et al.
F Wan et al.
Vapor-solid reactions were applied to monofilament and 6-filament AIMI MgB2 wires. A layer Jc of ~ 105 A cm-2 was achieved by the generation of a highly dense MgB2 layer after reaction at 625 °C for 8 to 16 h. It was found that the critica...
Rafting and Elastoplastic Deformation of Superalloys Studied by Neutron Diffraction [0.03%]
基于中子衍射的高温合金流变与弹塑性变形研究
James Coakley,Eric A Lass,Dong Ma et al.
James Coakley et al.
The rafting of monocrystalline Ni- and Co-based superalloys has been studied by neutron diffractometry. Lattice parameter misfit values and the difference in phase stiffnesses at room temperature, 650 ° C , and 900 ° C are pre...
Precipitation and dissolution of [Formula: see text] and [Formula: see text] during heat treatment of a laser powder-bed fusion produced Ni-based superalloy [0.03%]
激光粉末床熔融镍基高温合金的热处理过程中的[Formula: see text]和[Formula: see text]的生成与溶解
Eric A Lass,Mark R Stoudt,Michael B Katz et al.
Eric A Lass et al.
One drawback of the laser powder-bed fusion additive manufacturing (AM) technique is the build-up of residual stresses during processing that require a stress-relief heat treatment prior to components being removed from the build plate. Her...
Estimations of the effective Young's modulus of specimens prepared by fused filament fabrication [0.03%]
熔丝制造试样的有效杨氏模量的估算
Lichen Fang,Yishu Yan,Ojaswi Agarwal et al.
Lichen Fang et al.
The elastic response of homogeneous isotropic materials is most commonly represented by their Young's modulus (E), but geometric variability associated with additive manufacturing results in materials that are neither homogeneous nor isotro...
Multi-scale analyses of constituent phases in a trip-assisted duplex stainless steel by electron backscatter diffraction, in situ neutron diffraction, and energy selective neutron imaging [0.03%]
通过电子背散射衍射、原位中子衍射和能量选择性中子成像对含有沉淀相的复合不锈钢进行多尺度分析
Wanchuck Woo,Jongyul Kim,Eun-Young Kim et al.
Wanchuck Woo et al.
Micrometer to centimeter scale analyses of the crystalline phase volume fractions in a trip-assisted duplex stainless steel were performed under loading using electron backscatter diffraction (EBSD), in situ neutron diffraction, and energy ...
Diptak Bhattacharya,Lawrence Cho,Ellen Van der Aa et al.
Diptak Bhattacharya et al.
Intergranular Zn-assisted liquid metal embrittlement (LME) cracks have been frequently reported in steels, involving austenite grain boundary penetration of liquid Zn at high temperature. In the present study, a Zn-coated high strength stee...
Homogenization Kinetics of a Nickel-based Superalloy Produced by Powder Bed Fusion Laser Sintering [0.03%]
激光选区熔化镍基粉末合金的均质化动力学研究
Fan Zhang,Lyle E Levine,Andrew J Allen et al.
Fan Zhang et al.
Additively manufactured (AM) metal components often exhibit fine dendritic microstructures and elemental segregation due to the initial rapid solidification and subsequent melting and cooling during the build process, which without homogeni...
Observation of crack growth in a polycrystalline ferroelectric by synchrotron X-ray diffraction [0.03%]
采用同步辐射X射线衍射观察多晶铁电体中的裂纹扩展现象
J E Huber,F Hofmann,S Barhli et al.
J E Huber et al.
Pre-cracked samples of unpoled, polycrystalline, soft ferroelectric lead zirconate titanate were subjected to electrical and mechanical loading whilst using synchrotron X-ray diffraction to map strain-fields. Clear evidence is found of swit...
In situ observations of Berkovich indentation induced phase transitions in crystalline silicon films [0.03%]
Berkovich压头在结晶硅薄膜中原位诱发相变的观察研究
Yvonne B Gerbig,Chris A Michaels,Robert F Cook
Yvonne B Gerbig
The pressure induced phase transitions of crystalline Si films were studied in situ under a Berkovich probe using a Raman spectroscopy-enhanced instrumented indentation technique. The observations suggested strain and time as important para...
Substrate Topography Guides Pore Morphology Evolution in Nanoporous Gold Thin Films [0.03%]
基底形貌指导纳米多孔金薄膜中孔道形态的演变过程
Christopher A R Chapman,Pallavi Daggumati,Shannon C Gott et al.
Christopher A R Chapman et al.
This paper illustrates the effect of substrate topography on morphology evolution in nanoporous gold (np-Au) thin films. One micron-high silicon ridges with widths varying between 150 nm to 50 µm were fabricated and coated with 500 nm-thic...