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alloy and have excellent plasticity [1-2]. Therefore, Mg-Li alloys can meet the light-weight demand in the applications of aircraft, aerospace and military, etc [3-4]. Lithium in Mg-Li alloys is a key factor affecting the property and microstructure. When the lithium content in Mg-Li alloy increases, the microstructure of the alloy will change from α-Mg (HCP)+β-Li (BBC) to β-Li (BBC) [5-6], a Mg......
, 350/351: 31-42. [2] 王祝堂. 中国军机吊舱首次用国产Mg-Li合金制造[J]. 轻合金加工技术, 2018, 46(1): 48-48. WANG Zhu-tang. Chinese military aircraft pods first made of domestic Mg-Li alloy[J]. Light Alloy Fabrication Technology... alloys[J]. Journal of Nanoscience And Nanotechnology, 2016, 16(11): 11233-11237. [6] KROL M. Effect of grain refinements on the microstructure and thermal behaviour of Mg-Li-Al alloy[J]. Journal......
strength of 272.5 MPa, ultimate tensile strength of 315.0 MPa and elongation of 3.4%) among the studied as-cast and solid solution treated Mg-8Li-xAl-yZn alloys. Key words: Mg-Li alloy; Al/Zn ratio... shielding properties, damping capacity and machinability [4]. According to the Mg-Li equilibrium phase diagram, when Li content is between 5.3 wt.% and 10.7 wt.%, the Mg-Li alloy is composed......
Trans. Nonferrous Met. Soc. China 24(2014) 2752-2760 Effect of Sr content on microstructure and mechanical properties of Mg-Li-Al-Mn alloy Tian-cai XU1, Xiao-dong PENG1,2, Jun-wei JIANG1, Wei-dong... by hot extrusion, and their microstructural evolution and mechanical properties were analyzed. Results indicate that the LAM830 alloy mainly consists of α-Mg, β-Li, Al2Mn3, and LiMgAl2 phases. Sr addition......
Microstructure and mechanical properties of Mg-Li alloy after TIG welding LIU Xu-he1, GU Shi-hai1, WU Rui-zhi1, LENG Xue-song2, YAN Jiu-chun2, ZHANG Mi-lin1 1. Key Laboratory of Superlight... type of toughness and brittleness in the heat-affected zone. During the welding process, aluminum and cerium are enriched at grain boundaries in the fusion zone. Key words: Mg-Li alloy; TIG welding......
, JIANG Jun-wei, XIE Wei-dong, CHEN Yuan-fang, WEI Guo-bing. Effect of Sr content on microstructure and mechanical properties of Mg-Li-Al-Mn alloy[J]. Transactions of Nonferrous Metals Society of China... Ming-lin. Effects of combined addition of Y and Nd on microstructure and texture after compression of Mg-Li alloy at room temperature[J]. Acta Metallurgica Sinica, 2012, 48(6): 725-732. [9] LI Rui-hong......
alloy[J]. Transactions of Nonferrous Metals Society of China, 2011, 21(4): 880-884. [5] 李瑞红, 蒋 斌, 陈志军, 潘复生. 超轻Mg-Li-Al系变形镁合金挤压板材的组织及性能[J]. 中国有色金属学报, 2016, 26(1): 31-36. LI Rui-hong, JIANG Bin, CHEN Zhi... properties of duplex Mg-Li alloy[J]. Journal of Alloys and Compounds, 2016, 669: 72-78. [11] LI Rui-hong, PAN Fu-sheng, JIANG Bin, YANG Qing-shan, TANG Ai-tao. Effects of combined additions of Li and Al–5Ti......
is remarkably improved by the solution strengthening effect because of the addition of Ce. Key words: Mg-Li alloy; Ce; heat treatments; solution strengthening; tensile properties 1 Introduction Due...%) and heat treatment on the microstructure and tensile properties of the alloy. 2 Experimental The as-cast alloys were prepared from commercial purity Mg, Li, Al, Zn and Mg-18.67%Ce master alloy, in a vacuum......
structure forms in hexagonal α-Mg, leading to a duplex structure containing both α and β phases. When the content of Li is lower than 5.7% or higher than 10.3% (mass fraction), the Mg-Li alloy... of Mg-Li alloys can be increased due to the formation of Al2Y. PENG et al [23] reported that Al and Y addition into Mg-8Li alloy ensured good mechanical properties after a homogenization treatment......
直觉模糊集隶属度与非隶属度函数的确定方法邢清华,刘付显摘 要:基于证据理论研究直觉模糊集隶属度和非隶属度函数的确定问题是一种新的思路.首先分析信任函数,似然函数与隶属度函数,非隶属度函数的互通性;然后给出广义基本概率分配(BPA)函数,广义信任函数和广义似然函数的定义;最后在这3个改进定义的基础上建立直觉模糊集隶属度函数,非隶属度函数模型,通过证明和实例验证了模型的正确性和有效性.关键词:直觉模糊集;证据理论;广义BPA函数;广义信任函数;广义似然函数;......
