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. The hot extrusion parameters were: heat from room temperature to 800 °C for 1 h; the extrusion pressure is 50 MPa; the initial temperature of the extrusion die is 300 °C; the extrusion speed is 3.8 mm... and the extrusion die, spacer and symmetry axis is defined as Touching. The friction coefficient is 0.1, the extrusion speed is 3.8 mm/s and the initial temperature is 800 °C. For The iterative method, we......
microstructure evolution in the semi solid zone on AlSi7Mg alloy compression deformation was explored. [ Keyword: AlSi7Mg alloy slurries; initial microstructure evolution... slurry microstructure evolution in semi solid zone on thixotropic deformation Abstract: The microstructure evolution of AlSi7Mg alloy slurry in the semi solid zone has......
增大,达到98 μm. 图5 Mg-6Zn-1Cu-0.5Ce合金在600 ℃保温不同时间的非枝晶组织演变 Fig. 5 Non-dendritic microstructure evolution of Mg-6Zn-1Cu-0.5Ce alloy heated at 600 ℃ for different time 图6 Mg-6Zn-1Cu-0.5Ce...): 2357-2363. [6] CHEN Qiang, YUAN Bao-guo, ZHAO Gao-zhan, SHU Da-yu, HU Chuan-kai, ZHAO Zu-de, ZHAO Zhi-xiang. Microstructural evolution during reheating and tensile mechanical properties of thixoforged......
J. Cent. South Univ. (2018) 25: 490-498 DOI: https://doi.org/10.1007/s11771-018-3753-4 Microstructural evolution of 2026 aluminum alloy during homogenization JIANG Ding-bang(蒋鼎邦)1, PAN Qing-lin(潘清林..., Foshan 528133, China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract: The microstructural evolution of 2026 aluminum alloy during homogenization......
Trans. Nonferrous Met. Soc. China 27(2017) 305-311 Microstructure evolution of Al-Sr master alloy during continuous extrusion Sheng BI1, Xin-bing YUN1, Jiu-yang PEI1, Ying ZHAO1, Zhi-yong YAN2, Xu... Received 2 December 2015; accepted 13 June 2016 Abstract: The microstructure evolution of Al–Sr master alloy during continuous extrusion was investigated using X-ray diffractometer, scanning electron......
Evolution of zinc morphology during continuous electrodepositionAiling Fan, Wenhuai Tian, and M.KurosakiDepartment of Materials Physics and Chemistry, University of Science and Technology Beijing... evolution of zinc continuous electrodeposits with nano-sized crystals on the ferrite substrate has been studied by in-situ scanning tunnel spectroscopy (STM). It is found that the morphology of zinc......
to predict rockburst accurately. Based on the fast Fourier transform (FFT) method and the information entropy theory, the evolution model of dominant frequency entropy was established. The AE energy... were ascertained. It was observed that the evolution models of the dominant frequency entropy were nearly the same and shared a characteristic "undulation-decrease-rise-sharp decrease" pattern......
; 文章编号:1672-7207(2015)04-1420-08 Probability density evolution analysis of track-bridge vertical coupled vibration with irregularity random excitation YU Zhiwu, MAO Jianfeng, TAN Sui, ZENG Zhiping (National Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering, Central South University, Changsha 410075, China) Abstract: Based on the simple vertical......
based on the principle of PID control to establish ram speed profiles that can suppress the temperature evolution during the extrusion process to obtain isothermal extrusion. ZHOU et al [27] derived two... cross-section along the extrudate length was controlled within 10 °C. To improve the extrusion efficiency, the initial extrusion speed was set to be a high value. However, because of the limitation......
evolution of Al-Zn-Mg-(Sc)-(Zr) alloys during initial ageing stage[J]. Journal of Shandong University: Engineering Science, 2010, 4(3): 99-102. [15] 李世晨, 郑子樵, 刘祖耀, 李 剑, 杨培勇, 殷顺高. Al-Cu-Li-xMg合金时效初期微结...; Monte Carlo simulation of effect of Mg and Cu on precipitation of Al-Zn-Mg alloys during initial ageing stage LIN Liu-qiu, RONG Li, WANG Wei, NIE Zuo-ren (College of Materials Science......
