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.从铝熔炉倾倒出液体金属,通过导流槽平稳地流入结晶器上部的热顶内,热顶可有效保温及防止熔体二次污染.随着超声对热顶及结晶器内的液态金属的不断振动,铸锭从底部不断拉出直到熔炉完全清空. 图1 超声辅助热顶铸造示意图 Fig. 1 Schematic diagram of hot top casting with ultrasonic treatment 表1 ...高, 李建涛, 等. 铸造过程中超声处理对7050铝合金变形及热处理的影响[J]. 金属热处理, 2011, 36(12): 62-65.QIAO Xiang, ZHANG Zhigao, LI Jiantao, et al. Effect of ultrasonic treatment during casting on deformation and heat treatment......
Damage analysis for particle reinforced metal matrix composite by ultrasonic method YANG Zhi-guo(杨治国), LONG Shi-guo(龙士国) Key Laboratory for Advanced Materials and Rheological Properties... of particle reinforced metal matrix composite (PMMC) was studied by ultrasonic non-destructive evaluation method. After the sample was damaged induced by tensile load, the ultrasonic wave that propagated......
is proposed to evaluate damage of silt through field measurement ultrasonic data. The study could provide a theoretical basis for the treatment of silty soil highway. Key words: silt of Yellow River Flood... characteristics of silt, a series of tests (i.e., freeze-thaw cycling tests, vibration triaxial tests and ultrasonic wave velocity tests) were conducted and two kinds of silt (i.e., salt-free and 3%-salt silt......
of MMC fabrication under high intensity ultrasonic treatment[J]. Materials for Mechanical Engineering, 2003, 27(7): 1-2. [10] 樊建中, 桑吉梅, 张永忠, 等. 铝基复合材料增强体颗粒分布均匀性的研究[J]. 金属学报, 1998, 34(11): 1200-1204... University (Natural Science Edition), 2012, 30(1): 1-4. [13] ESKIN G I. Ultrasonic treatment of light alloy melts[M]. London: CRC Press/Taylor & Francis Group, 2015: 35-60. [14] RAE J, ASHOKKUMAR M......
(1/2): 2-5. [9] Ramirez A, Qian M, Davis B, et al. Potency of high-intensity ultrasonic treatment for grain refinement of magnesium alloys[J]. Scripta Material, 2008, 59(1): 19-22. [10] Eskin G I. Ultrasonic treatment of light alloy melts[M]. Amsterdam: CRC Press, 1998: 1-6. [11] LIU Xin-bao, Osawa Y, Takamori S, et al. Microstructure and mechanical properties of AZ91 alloy produced......
J. Cent. South Univ. Technol. (2008) 15: 738-741 DOI: 10.1007/s11771-008-0136-2 Fast recognition algorithm of underwater micro-terrain based on ultrasonic detection LUO Bo-wen(罗柏文)1, ZHOU Zhi... of the micro-terrain. Key words: underwater micro-terrain; ultrasonic detection; single beam; exceptional elevation values; threshold value; dynamic clustering ......
Influence of high intensity ultrasonic vibration on microstructure of in-situ synthesized Mg2Si/Mg composites CHEN Ke(陈可), LI Zi-quan(李子全), ZHOU Heng-zhi(周衡志), WANG Wei(王伟) College of Materials... in remelting process by means of high intensity ultrasonic vibration. The effects of ultrasonic vibration duration and temperature on size, morphology and distribution of the primary Mg2Si were studied......
J. Cent. South Univ. (2021) 28: 1978-1989 DOI: https://doi.org/10.1007/s11771-021-4746-2 Annealing twin mechanism for 304 stainless steel solution treatment process JI Kai-sheng(纪开盛)1, SONG Guang... and grain orientation variation during the solution heat treatment process of the 304 stainless steel pipe were studied. It was found that after the solution heat treatment, the texture type clearly......
Optimal design of butterfly-shaped linear ultrasonic motor using finite element method and response surface methodologySHI Yun-lai(时运来), CHEN Chao(陈超), ZHAO Chun-sheng(赵淳生)(State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and Astronautics), Nanjing, 210016, China)Abstract:A new method for optimizing a butterfly-shaped linear ultrasonic......
A novel two-degree-of-freedom spherical ultrasonic motor using three travelling-wave type annular statorsWANG Jian(王剑)1, HU Xi-xing(胡锡幸)2, WANG Ban(王班)1, GUO Ji-feng(郭吉丰)1(1. College of Electrical... and controllability of the multi-degree-of-freedom (M-DOF) ultrasonic motor, a novel two-degree-of-freedom (2-DOF) spherical ultrasonic motor using three traveling-wave type annular stators was put......
