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and the system has a long-term reliability problem. This was echoed by OZDEMIR et al [89] who blamed on the poor reliability of the high pressure pumping equipment, high power cost and personnel safety concern... J. Cent. South Univ. (2021) 28: 454-480 DOI: https://doi.org/10.1007/s11771-021-4615-z TBM tunneling in extremely hard and abrasive rocks:Problems, solutions and assisting methods ZHENG Yan-long(郑彦......
: China Standard Press, 2001. [37] 孙晓敏, 刘 栋, 汤海波, 王华明. 固溶时效对激光熔化沉积 TC17 钛合金显微组织的影响[J]. 热加工工艺, 2012, 41(14): 226-229. SUN Xiao-min, LIU Dong, TANG Hai-bo, WANG Hua-ming. The effect of solid solution aging..., 2008, 25(1): 33-35. [47] 宁兴龙. 俄罗斯航空用钛合金[J]. 钛工业进展, 1999, 4: 19-25. NING Xing-Long. The aviation titanium alloys of the Russian[J]. Titanium Industrial Progress, 1999, 4: 19-25. [48] 宁兴龙. 飞机用钛新数据[J......
Song-bai, YANG Jin-long, LOU Jiang, WANG Shui-qing. Effects of P element on microstructure and properties of Al-Si-Zn filler metal[J]. Transactions of the China Welding Institution, 2013, 34(5... Jun-lei, ZHENG Wen-long, FENG Ji-cai. Process of vacuum brazing 5005 aluminum alloy to 4J34 Kovar alloy[J]. The Chinese Journal of Nonferrous Metals, 2015, 25(6): 1435-1440. [73] 刘淑祺, 赵世民, 张启运. Al-Cu-Ag......
cases, particle shape and size were significantly affected by the applied experimental parameters, especially aging time, reaction temperature, and reactants compositions. In order to obtain...-huai. Sub-ppb detection of acetone using Au-modified flower-like hierarchical ZnO structures [J]. Sensors and Actuators B, 2015, 219: 209-217. [8] MENG Fan-li, ZHENG Han-xiong, CHANG Yuan-long, ZHAO......
with long calcinations time, resulting in low specific surface area. In order to enlarge their surface area, perovskite-type oxides with various morphologies, including nanosheets [2, 3], nanofibers [4, 5... were stoichiometrically mixed, and then directly sintered for a long time at high temperature in air to obtain the pure phase perovskite oxide powder, known as high temperature solid method [16-18......
, 134].β′相的成分为Mg7RE,具有正交结构.根据晶格常数b的不同,β′相可分为β′-long和β′-short,两者的晶格常数均约为,均约为,而约为,约为[90].β′相的晶格常数和组成元素有关,析出形貌也会随体系的不同而发生变化,在Mg-Nd和Mg-Gd体系中为透镜状,在Mg-Y体系中呈球状.β′相的惯习面通常为,其与α-Mg之间的取向关系为[001]β″//[0001]α和// [89..., NAGAI K, MATSUMOTO A, YASUHARA A, INUI H. Crystal structures of highly-ordered long-period stacking-ordered phases with 18R, 14H and 10H-type stacking sequences in the Mg-Zn-Y system[J]. Acta......
]. Scripta Materialia, 2019, 158: 141-145. [53] LONG Y, LIANG X, SU K, PENG H, LI X. A fine-grained NbMoTaWVCr refractory high-entropy alloy with ultra-high strength: Microstructural evolution... distortion in a strong and ductile refractory high-entropy alloy[J]. Acta Materialia, 2018, 160: 158-172. [72] LONG Y, SU K, ZHANG J, LIANG X, PENG H, LI X. Enhanced strength of a mechanical alloyed......
