G B McFadden,W J Boettinger,Y Mishin
G B McFadden
Interaction of vacancies with grain boundaries (GBs) is involved in many processes occurring in materials, including radiation damage healing, diffusional creep, and solid-state sintering. We analyze a model describing a set of processes oc...
Microstructure-based knowledge systems for capturing process-structure evolution linkages [0.03%]
基于微观结构的知识系统用于捕获工艺-结构演化关系
David B Brough,Daniel Wheeler,James A Warren et al.
David B Brough et al.
This paper reviews and advances a data science framework for capturing and communicating critical information regarding the evolution of material structure in spatiotemporal multiscale simulations. This approach is called the MKS (Materials...
Precipitation kinetics, microstructure evolution and mechanical behavior of a developed Al-Mn-Sc alloy fabricated by selective laser melting [0.03%]
选择性激光融化制造的一种新型Al-Mn-Sc合金的时效动力学，微观组织演变和力学性能
Qingbo Jia,Fan Zhang,Paul Rometsch et al.
Qingbo Jia et al.
The dynamic metallurgical characteristics of the selective laser melting (SLM) process offer fabricated materials with non-equilibrium microstructures compared to their cast and wrought counterparts. To date, few studies on the precipitatio...
Effect of heat treatment on the microstructural evolution of a nickel-based superalloy additive-manufactured by laser powder bed fusion [0.03%]
激光粉末床熔融镍基合金的微观组织演变及热处理效果研究
Fan Zhang,Lyle E Levine,Andrew J Allen et al.
Fan Zhang et al.
Elemental segregation is a ubiquitous phenomenon in additive-manufactured (AM) parts due to solute rejection and redistribution during the solidification process. Using electron microscopy, in situ synchrotron X-ray scattering and diffracti...
In Situ Structural Characterization of Ageing Kinetics in Aluminum Alloy 2024 across Angstrom-to-Micrometer Length Scales [0.03%]
跨越 Å 到 μm 长度尺度的 2024 铝合金时效动力学原位结构表征
Fan Zhang,Lyle E Levine,Andrew J Allen et al.
Fan Zhang et al.
The precipitate structure and precipitation kinetics in an Al-Cu-Mg alloy (AA2024) aged at 190 °C, 208 °C, and 226 °C have been studied using ex situ Transmission Electron Microscopy (TEM) and in situ synchrotron-based, combined ultra-sm...
Application of Finite Element, Phase-field, and CALPHAD-based Methods to Additive Manufacturing of Ni-based Superalloys [0.03%]
基于有限元、相场和CALPHAD方法的镍基高温合金增材制造应用研究进展
Trevor Keller,Greta Lindwall,Supriyo Ghosh et al.
Trevor Keller et al.
Numerical simulations are used in this work to investigate aspects of microstructure and microseg-regation during rapid solidification of a Ni-based superalloy in a laser powder bed fusion additive manufacturing process. Thermal modeling by...
Growth kinetics of ω particles in β-Ti matrix studied by in-situ small-angle x-ray scattering [0.03%]
原位小角X射线散射研究β-Ti基体中ω相的动力学过程
J Šmilauerová,P Harcuba,D Kriegner et al.
J Šmilauerová et al.
Nucleation and growth kinetics of nanoparticles of hexagonal ω phase in a body-centered cubic β titanium matrix in single crystals of β-Ti alloys were investigated by small-angle x-ray scattering measured in-situ during ageing at various...
Multiaxial constitutive behavior of an interstitial-free steel: Measurements through X-ray and digital image correlation [0.03%]
无间隙原子钢的多轴本构行为:X射线和数字图像相关测量结果
Y Jeong,M A Iadicola,T Gnäupel-Herold et al.
Y Jeong et al.
Constitutive behaviors of an interstitial-free steel sample were measured using an augmented Marciniak experiment. In these tests, multiaxial strain field data of the flat specimens were measured by the digital image correlation technique. ...
Quantitative Mapping of Stress Heterogeneity in Polycrystalline Alumina using Hyperspectral Fluorescence Microscopy [0.03%]
基于超光谱荧光显微镜的多晶氧化铝中应力不均匀性的定量表征研究
Grant A Myers,Chris A Michaels,Robert F Cook
Grant A Myers
The microstructurally-induced heterogeneous stress fields arising in a series of Cr-doped polycrystalline alumina materials are mapped with sub-micrometer sub-grain size resolution using fluorescence microscopy. Analysis of the hyperspectra...
MAGNETOCALORIC RESPONSE OF NON-STOICHIOMETRIC Ni2MnGa ALLOYS AND THE INFLUENCE OF CRYSTALLOGRAPHIC TEXTURE [0.03%]
非化学计量Ni2MnGa合金的磁热效应及其晶体织构的影响
M V McLeod,A K Giri,B A Paterson et al.
M V McLeod et al.
Currently, there is significant interest in magnetocaloric materials for solid state refrigeration. In this work, polycrystalline Heusler alloys belonging to the Ni2+xMn1-xGa family, with x between 0.08 and 0.24, were evaluated for the purp...