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Microstructure evolution of nanostructured Ni3Al during annealing REN Jiang-wei(任江伟)1, SHAN Ai-dang(单爱党)1, LIU Jun-liang(刘俊亮)2, ZHANG Jun-bao(张俊宝)2, SONG Hong-wei(宋洪伟)2 1. Key Laboratory...]. The intermetallic compound Ni3Al has attractive high temperature properties for its yield stress increases with the temperature increasing[2]. So far, it is possible to produce bulk nanocrystallites on intermetallic......
Microstructure and mechanical properties of Zr-Cu-Al bulk metallic glasses MA Wen-jie(马文杰)1, WANG Yu-ren(王育人)1, WEI Bing-chen(魏炳忱)1, SUN Yu-feng(孙玉峰)2 1. National Microgravity Laboratory.... The composite exhibits remarkably improved plastic deformation and obvious strain hardening on the premise of preserving its high fracture strength. Besides, SUN et al[9] reported that Zr48.5Cu46.5Al5 bulk......
deformation; high pressure torsion; grain boundary structure; deformation twinning; nanostructures 1 Introduction In the last decade, there has been a considerable interest in the development of bulk... T, BALOGH L, MURASHKIN M, VALIEV R Z. Grain boundary structures and deformation defects in nanostructured Al-Mg alloys processed by high pressure torsion [J]. Mater Sci Forum, 2008, 584/585/586......
in Fig.7(b). Fig.7 TEM images showing microstructure of bulk nanostructured Al-10.0Zn-3.0Mg-1.8Cu alloy: (a) Fine-grained area; (b) Sub-micron-grained zone Although SPS is a hopeful consolidation...; Abstract: Nanocrystallized Al-10.0%Zn-3.0%Mg-1.8%Cu (mass fraction) alloy powder was prepared by cryomilling, and then the nanostructured powder was consolidated into bulk material by spark plasma......
the special wave of acceleration on the piston head has been developed. In order to discover the causes of the structural abnormal noise, the hydraulic shock absorber operation was divided into micro... goes to the oil cylinder. When the shock absorber is stretched, contrarily, pressure is developed in the chamber above the piston. This pressure closes the compression relief valve and opens......
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J. Cent. South Univ. (2016) 23: 2838-2844 DOI: 10.1007/s11771-016-3347-y Fragmentation mechanism of low-grade hematite ore in a high pressure grinding roll YUAN Zhi-tao(袁致涛)1, LI Li-xia(李丽匣)1, HAN...-grade hematite ore in a high pressure grinding roll (HPGR) was studied based on the characteristics of comminuted products at different specific pressure levels. The major properties included......
of direct precipitation from aqueous solution, which is simple, effective and suitable for scaleproduction. The powder was then pressed into bulk material under high pressure and high vacuum and ionic.... To avoid the grain growth, we prepared the bulk material of nano-LaF3 at room temperature with high pressure (1 GPa) and high vacuum (10-4 Pa) that guarantee high density and clean interface between grains......
Effect of adding methods of metallic phase on microstructure and thermal shock resistance of Ni/(90NiFe2O4-10NiO) cermets LAI Yan-qing(赖延清), ZHANG Yong(张 勇), TIAN Zhong-liang(田忠良), SUN Xiao-gang... plating were respectively used as the adding methods of metallic phase to prepare Ni/(90NiFe2O4-10NiO) cermets for the inert anode in aluminum electrolysis. The microstructure and thermal shock......
J. Cent. South Univ. (2017) 24: 1465-1475 DOI: 10.1007/s11771-017-3550-5 Effect of ambient wind on pressure wave generated by high-speed train entering a tunnel ZHOU Xi-sai(周细赛)1, 2, LIU Tang-hong(刘...-dimensional, unsteady N-S equations and k-ε turbulence model, the effect of ambient wind on the pressure wave generated by a high-speed train entering a tunnel was studied via numerical simulation......