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Influence of annealing on spin state of cobalt ions inLa1-xSrxCoO3 (0≤x≤0.5) system JIANG Lizhen1,XU Zhuan2 (1.College of Information and Electronic Engineering, Zhejiang Gongshang University... determined, and their variations with Sr doping and oxygen annealing condition were obtained. The result suggested that by assuming that the Co3+ ions were in the intermediate-spin (IS) state, most......
Microstructure and Thermal Conductivity of As-Cast and As-Solutionized Mg–Rare Earth Binary AlloysLiping Zhong1,Jian Peng1,2,Song Sun1,Yongjian Wang1,Yun Lu3,Fusheng Pan1,21. State Key Laboratory... 要:The microstructure and thermal conductivity of four groups of Mg–rare earth(RE) binary alloys(Mg–Ce,Mg–Nd, Mg–Y and Mg–Gd) in as-cast and as-solutionized......
applied as aeroengine components for its low cost and good mid-temperature(600–900?C) properties. Since used in as-cast state, the comprehensive understanding on its mechanical properties...Tensile, creep behavior and microstructure evolution of an as-cast Ni-based K417G polycrystalline superalloyBeining Du1,Ziyang Hu1,2,Liyuan Sheng1,Chuanyong Cui3,Jinxia Yang3,Yufeng Zheng1,Xiaofeng......
等Zn截面相图计算结果以及后面研究的均匀化组织中未出现过烧现象相符合. 图5 7095合金铸态及均匀化态的DTA曲线 Fig. 5 DTA curves of as-cast and homogenized 7095 alloy 2.3 高Zn超强Al-Zn-Mg-Cu系合金铸态组织与相组成 图6 Al-Zn-Mg-Cu系合金凝固态结晶相的SEM像 Fig. 6 SEM images of crystallization phase in as-cast aluminum alloys 图6所示为各高Zn型Al-Zn-Mg-Cu系合金典型铸态显微组织图,其中浅灰色区域为α(Al)基体,白色区域为凝固过程形成的连续的非平衡共晶组织.从图6(b3),(d3)中可见,这4种合金非平衡凝固结晶相是由呈层片状灰白相间的共晶组织和粗大条状......
Tensile fracture of as-cast and hot rolled Mg-Zn-Y alloy with long-period stacking phase WANG Bai-shu(王柏树)1, 2, XIONG Shou-mei(熊守美)1, LIU Yong-bing(刘勇兵)3 1. State Key Laboratory of Automotive..., Jilin University, Changchun 130025, China Received 23 September 2009; accepted 30 January 2010 Abstract: An experimental Mg97Zn1Y2 (molar fraction, %) alloy was produced by rolling the as-cast alloy......
J. Cent. South Univ. (2012) 19: 1543-1547 DOI: 10.1007/s11771-012-1174-3 Stability of motion state and bifurcation properties of planetary gear train LI Tong-jie(李同杰)1,2, ZHU Ru-peng(朱如鹏)1, BAO He... and multiple gear backlashes into account. The bifurcation diagram of the system’s motion state with rotational speed of sun gear was conducted through four steps. As a bifurcation parameter......
Effect of hydrogen content and stress state on room-temperature mechanical properties of Ti-6Al-4V alloy YUAN Bao-guo(袁宝国), LI Chun-feng(李春峰), YU Hai-ping(于海平), SUN Dong-li(孙东立... (in the range of 0%-0.5%, mass fraction) and stress state (tension and compression) on the room-temperature mechanical properties of Ti-6Al-4V alloy through mechanical properties tests. The effects......
J. Cent. South Univ. (2017) 24: 1133-1143 DOI: 10.1007/s11771-017-3516-7 Innovative design and motion mechanism analysis for a multi-moving state autonomous underwater vehicles GAO Fu-dong(高富东)1... Industry Co. Ltd., Changsha 410100, China Central South University Press and Springer-Verlag Berlin Heidelberg 2017 Abstract: In order to achieve the functional requirements of multi-moving state, a new......
Comparison of as-cast microstructure, tensile and creep properties for Mg-3Sn-1Ca and Mg-3Sn-2Ca magnesium alloys YANG Ming-bo(杨明波)1, 2, CHENG Liang(程 亮)1, PAN Fu-sheng(潘复生)2 1...; Abstract: The as-cast microstructure, tensile and creep properties of Mg-3Sn-1Ca and Mg-3Sn-2Ca magnesium alloys were investigated and compared by using optical......
)04-0545-05 Effect of yttrium on as-cast microstructure of 2519 aluminum alloy LI Hui-zhong, ZHANG Xin-ming, CHEN Ming-an, ZHOU Zhuo-ping (School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The effects of yttrium (0-0.3%,mass fraction) on as-cast microstructure of 2519 aluminum alloys were investigated by means of X-ray diffraction, optical......