Microstructure, irreversibility line and flux dynamics in plastically deformed directionally solidified YBa2Cu3O7

Vilalta N; Sandiumenge F; Rodriguez E; Martinez B; Pinol S; Obradors X; Rabier J

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Microstructure, irreversibility line and flux dynamics in plastically deformed directionally solidified YBa2Cu3O7

机译：塑性变形定向凝固YBa2Cu3O7的微观结构，不可逆线和通量动力学

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The microstructure and superconducting properties of directionally solidified YBa2Cu3O7/Y2BaCuO5 composites made to creep at 930 degrees C, have been investigated using transmission electron microscopy, and dc and ac magnetic measurements. It is found that the plastic deformation of high critical current samples induces a shift of the irreversibility line toward lower fields and temperatures as a result of a decrease of the activation energy for flux motion. Such a superconducting behaviour is directly correlated with the observed microstructure, which is dominated by microcracks and large stacking faults that decrease the vortex correlation along the c axis.

机译：使用透射电子显微镜以及直流和交流磁测量研究了定向凝固的YBa2Cu3O7 / Y2BaCuO5复合材料在930摄氏度蠕变的微观结构和超导性能。发现高临界电流样品的塑性变形导致不可逆线向较低的磁场和温度移动，这是由于通量运动的活化能降低的结果。这种超导行为与观察到的微观结构直接相关，微观结构主要由微裂纹和大的堆垛层错控制，这些缺陷会降低沿c轴的涡旋相关性。

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《Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties》 |1997年第3期|共11页
作者
Vilalta N; Sandiumenge F; Rodriguez E; Martinez B; Pinol S; Obradors X; Rabier J;
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正文语种 eng
中图分类物理学;
关键词
PROCESSED YBACUO SUPERCONDUCTORS; CRITICAL CURRENTS; DISLOCATIONS; DEFORMATION; COMPOSITES; DEFECTS;

机译：加工的Ybacuo超导体;临界电流;位移;变形;复合材料;缺陷;

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1. Microstructure, irreversibility line and flux dynamics in plastically deformed directionally solidified YBa2Cu3O7 [J] . Vilalta N, Sandiumenge F, Rodriguez E, Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties . 1997,第3期

机译：塑性变形定向凝固YBa2Cu3O7的微观结构，不可逆线和通量动力学
2. Microstructure evolution and strain hardening behavior during plastic deformation of directionally solidified twinning-induced plasticity steel [J] . Dan Wang, Kun Wang, Min Luo, Materials & design . 2015,第feba期

机译：定向凝固孪生诱导塑性钢塑性变形过程中的组织演变和应变硬化行为
3. Microstructure and texture evolution for dynamic plastic deformed pure magnesium during isothermal annealing [J] . Hong Qin, Xiyan Zhang, Qingshan Dong Materials Science and Engineering . 2015,第feba25期

机译：等温退火过程中动态塑性变形纯镁的组织和织构演变
4. Dynamical microstructure formation in 3D directional solidification of transparent model alloys: in situ characterization in DECLIC Directional Solidification Insert under diffusion transport in microgravity [C] . N Bergeon, F L Mota, L Chen International Conference on Modelling of Casting, Welding and Advanced Solidification Processes . 2015

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5. Influence of solidification variables on the cast microstructure and porosity in directionally solidified Mar-M247. [D] . Whitesell, Harry Smith, III. 2002

机译：凝固变量对定向凝固Mar-M247中铸件组织和孔隙率的影响。
6. Investigation of Microstructure Evolution and Phase Selection of Peritectic Cuce Alloy During High-Temperature Gradient Directional Solidification [O] . Yiku Xu, Zhaohao Huang, Yongnan Chen, 2020

机译：高温梯度定向凝固过程中包晶型包晶合金的组织演变及相选择的研究
7. Gyorshűtéssel, mechanikus ötvözéssel, illetve nagy deformációval előállított nanokristályos anyagok mikroszerkezete, termikus és mechanikai tulajdonságai = Microstructure, thermal and mechanical properties of nanocrystalline materials produced by rapid solidification, mechanical alloying or by severe plastic deformation [O] . Lendvai János, Groma István, Krállics György, 2007

机译：快速冷却，机械合金化和高变形产生的纳米晶体材料的微观结构，热和机械性能=快速凝固，机械合金化或严重塑性变形产生的纳米晶体材料的微观结构，热和机械性能
8. Flux dynamics and irreversibility in YBa2Cu3O7 with Y2BaCuO5 inclusions and in single crystal YBa2Cu3O7 [R] . Fossheim, K, Karkut, M G, Heill, L K, 1992

机译：YBa2Cu3O7与Y2BaCuO5夹杂物和单晶YBa2Cu3O7中的磁通动力学和不可逆性

Microstructure, irreversibility line and flux dynamics in plastically deformed directionally solidified YBa2Cu3O7

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