Results 91 to 100 of about 1,740 (221)

Scanning transmission electron microscopy and atom probe tomography analysis of non-stoichiometry long-period-stacking-ordered structures in Mg-Ni-Y/Sm alloys

Journal of Magnesium and Alloys
The long-period-stacking-ordered (LPSO) structure affects the mechanical, corrosion and hydrolysis properties of Mg alloys. The current work employs high angle annular dark field-scanning transmission electron microscopy (HAADF-STEM) and atom probe ...
Yimeng Chen, Manuel Legrée, Jean-Louis Bobet, Alexander Kvit   +3 more
doaj   +1 more source

On the special oxidation mechanism of a Mg-Y-Al alloy contained LPSO phase at high temperatures

, 2023
This work investigated the oxidation of Mg-11Y-1Al alloy in Ar-20%O2 at 500{\deg}through multiscale characterization. The results show that the network-like long-period stacking ordered(LPSO) phase decomposed into a needle-like LPSO phase and a polygonal
Chen, Yiwen, Li, Yangxin, Shen, Zhao, Wang, Jingya, Wang, Zhipeng, Zeng, Xiaoqin, Zhao, Yahuan, Zhu, Qingchun   +7 more
core  

Study of heterostructure composition by regulating lamellar LPSO phase and the related strengthening mechanism in the Mg-Gd-Y-Zn-Zr alloy

Journal of Magnesium and Alloys
The heterostructure preparation in Mg-rare earth (RE) alloy has attracted much attention due to the excellent enhancement of strength and ductility. However, the effect of heterostructure composition on mechanical properties in Mg-RE alloy is still not ...
Shuangwu Xia, Ping Li, Junfu Dong, Tianle Wang, Liangwei Dai, Kemin Xue   +5 more
doaj   +1 more source

Confidence and competence with mathematical procedures [PDF]

, 2015
Confidence assessment (CA), in which students state alongside each of their answers a confidence level expressing how certain they are, has been employed successfully within higher education.
A Bandura, AJ Baroody, AR Gardner-Medwin, AR Gardner-Medwin, AR Gardner-Medwin, AR Gardner-Medwin, B Fischhoff, B Russell, C Foster, C Gattegno, C Kieran, C Kyriacou, Colin Foster, CS Dweck, D Hewitt, Department for Education (DfE), E Fennema, FK Leung, GC Leder, I Clark, J Boaler, J Boaler, J Cohen, J Ehrlinger, J Holt, JR Star, JR Star, K Issroff, L Burton, L Fan, L Jones, L Stankov, LA Frost, M Askew, MS Hannula, MS Hannula, MS Hannula, N Schoendorfer, National Council of Teachers of Mathematics (NCTM), P Black, P Black, P Galbraith, P Martino Di, P Warwick, R Pierce, S Johnston-Wilder, S Morony, SY Lim   +47 more
core   +3 more sources

Active site maturation and activity of the copper-radical oxidase GlxA is governed by a tryptophan residue [PDF]

, 2017
GlxA from Streptomyces lividans is a mononuclear copper-radical oxidase and a member of the auxiliary activity family 5 (AA5). Its domain organisation and low sequence homology make it a distinct member of the AA5 family in which the fungal galactose 6 ...
Amanda K. Chaplin, Avigad, Baron, Blundell, Cantarel, Chaplin, Davis, Deacon, Dimitri A. Svistunenko, Emsley, Erik Vijgenboom, Evans, Firbank, Gasteiger, Ito, Ito, Jonathan A.R. Worrall, Kabsch, Kieser, Krissinel, Lee, Levasseur, Liman, Michael A. Hough, Michael T. Wilson, Murshudov, Peisach, Petrus, Rogers, Rogers, Rogers, Rokhsana, Schneider, Svistunenko, van Veluw, Wachter, Whittaker, Whittaker, Whittaker, Whittaker, Whittaker, Winter, Xu, Yin   +43 more
core   +1 more source

Can surface modification enhance the mechanical properties through microstructural changes of magnesium alloys? [PDF]

, 2021
El objectivo principal de este trabajo final de máster (TFM) consiste en estudiar el efecto de la modificación microestructural, así como la directa modificación de las propiedades mecánicas bajo diferentes campos de tensión (dureza Vickers y fatiga ...
Todeschini, Lucas
core  

Creep strength of Mg-Y-Zn alloys containing long-period stacking ordered structures [PDF]

Magnesium (Mg) alloys reinforced with long-period stacking ordered (LPSO) structures exhibit considerable potential for achieving enhanced mechanical properties. Despite progress in understanding tensile and compressive deformation mechanisms at elevated
Knezevic, Marko, Liu, Yahui, Wang, Dandan, Wang, Jie, Zeng, Xiaoqin, Zhu, Gaoming   +5 more
core   +1 more source

Influence of Y/Zn Ratio on Secondary Phase Strengthening of Mg-Y-Zn Alloy

Metals
By adjusting the Y/Zn (wt.%) ratio while maintaining the total mass of Y and Zn unchanged, the evolution of the microstructure and mechanical properties of Mg-Y-Zn alloy castings with different phase types was investigated. The results indicated that the
Jie Hu, Jiageng Wu, Xiangquan Liu, Dong Zhao, Liang Liang, Jian Peng   +5 more
doaj   +1 more source

In-situ Investigation of the Microstructure Evolution in Long-Period-Stacking-Ordered (LPSO) Magnesium Alloys as a Function of the Temperature

Frontiers in Materials, 2019
Deformation behavior of two Mg–Zn–Y magnesium alloys, having a different fraction of the long-period-stacking-ordered (LPSO) phase, has been investigated at room temperature and 200°C by a combination of in-situ neutron diffraction (ND) and acoustic ...
Kristián Máthis, Kristián Máthis, Daria Drozdenko, Daria Drozdenko, Gergely Németh, Gergely Németh, Stefanus Harjo, Wu Gong, Kazuya Aizawa, Michiaki Yamasaki, Yoshihito Kawamura   +10 more
doaj   +1 more source

Comparison of Thermal Deformation Behavior and Characteristics of Mg-Gd-Y-Zn Alloys with and without Bulk LPSO Phase. [PDF]

Materials (Basel), 2023
Chen D, Wang Q, Zhang L, Li T, Yuan J, Shi G, Wang X, Zhang K, Li Y.   +8 more
europepmc   +1 more source