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J. Cent. South Univ. (2017) 24: 81-89 DOI: 10.1007/s11771-017-3411-2 Modeling flame propagation speed and quenching distance of aluminum dust flame with spatially random distribution of particles... and the effects of various oxidizers such as carbon dioxide and oxygen on flame speed were studied. Nitrogen was considered the inert gas. In addition, the quenching distance and the minimum ignition......
Numerical Methods for Safeguarding the Performance of the Quenching Process J.GU1,G.E.Totten2,J.Bodin3,I.FELDE4,S.Segerberg3,T.RETI5,G.S.Sarmiento6 (1.Shanghai Jiao Tong University, Shanghai..., Budapest, Hungary;6.Universidad de Buenos Aires, Buenos Aires, Argentina) 摘要:A new numerical technique for testing and evaluation of quenching media and quenching systems is outlined. The measured time......
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nanocomposite permanent magnets were prepared under different melt treatment conditions, i.e., the melt temperature was varied prior to ejection onto the quenching wheel. The effect of quenching temperature... uniform microstructure can be obtained directly from the melt quenched at lower temperature. With increasing initial quenching temperature, the optimal quenching speed decreases and the microstructure......
Mechanisms of Fluorescence Quenching of Pr3+-Doped PbWO4 Crystal Xiong Feibing1,Luo Zundu1,Huang Yidong1 (1.Fujian Institute of Research on Structure of Matter, Chinese Academy of Sciences, Fuzhou... mechanisms for the fluorescence quenching of the manifolds were analyzed. The multi-phonon relaxation and the cross-relaxation energy transfer are the major reasons for the fluorescence quenching of the 3P0......
Cooling Curve''s Effect on Hardening Behavior of Steel Shigeru Asada1,Kazuto Fukuhara1,Syusaku Maeda1,Yoshihiro Tomita1 (1.Nippon Grease Co., Ltd. Osaka, Japan) 摘要:Quenching Oils are comprised... of mineral oil as determined by JIS method can be divided into three stages, vapor film stage, boiling stage and convection stage. And there are many types of additives used for quenching oil, one......
Analysis of Quenching Stresses in 35CrMo Axle龚海1,2,3,WU Yunxin1,2,FENG Xiaolei1,2,LI Yihua1,21. State Key Laboratory for High Performance Complex Manufacturing2. School of Mechanical and Electrical... comprehensively analyzed the fields of temperature, organization, and stress in 35CrMo train axles during the quenching process is conducted, and experimentally studied the formation and evolution......
Effect of Rapid Quenching on Electrochemical Properties of AB5 and AB3.5-Type Hydrogen Storage Alloys Li Ping1,Zheng Xueping1,Qu Xuanhui1,An Fuqiang1,Islam S. Humail1 (1.Key Laboratory of New Energy Materials and Technologes, School of Materials Science and Engineering, USTB, Beijing 100083,China) Abstract:Effect of rapid quenching on the electrochemical properties of AB5 and AB3.5-type......
Influence of rapid quenching on hydrogen storage characteristics of nanocrystalline Mg2Ni-type alloys ZHANG Yang-huan (张羊换)1, 2, ZHAO Dong-liang (赵栋梁)1, LI Bao-wei (李保卫)2, GUO Shi-hai (郭世海)1, QI... synthesized by rapid quenching technique. The microstructures of the as-cast and quenched alloys were characterized by XRD, SEM and HRTEM. The electrochemical hydrogen storage performances were......
-quenching is the highest. The quench sensitivities of T7 and RRA are almost the same, which are 1.2% higher than that of T6. TEM observation shows that the quench sensitivity for the studied alloy... and RRA aged samples, which also reflects the differences on the microstructure. Key words: Al-Zn-Mg-Cu alloy; quenching; quench sensitivity; aging; precipitation 1 Introduction Al-Zn-Mg-Cu alloys have......
