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and elongation to failure of the samples along the radial direction are higher than that along the axial direction. The fine grain strengthening was the main contributors to the strength of the as-casted AZ31 alloy.Key words:semi-continuous casting method; microstructure; mechanical properties; fine grain strengthening......
at 350 °C, cold rolling with 60% thickness reduction and 250 °C annealing, successively. Key words: Mg-Li alloy; beryllium; scandium; solid solution strengthening ... up more energy. By this procedure, the final stage of annealing leads to recrystallization with fine grains. 3.2 Strengthening and grain refining by solid solution treatment After solution treatment......
: The strengthening mechanism of the rolled EW93 magnesium alloy through T5 heat treatment was investigated. The microstructures and mechanical properties of the alloy with cast-T6 and rolled-T5 temper were compared. The results show that effective grain refinement is attained after hot rolling and the contribution of grain boundary strengthening rises from 12.2% to 26.7%. After optimizing the heat treatment......
Influence of Ce on the Extrinsic Strengthening Effect of Al-Li Alloy陈铮,何明摘 要:ＩｎｆｌｕｅｎｃｅｏｆＣｅｏｎｔｈｅＥｘｔｒｉｎｓｉｃＳｔｒｅｎｇｔｈｅｎｉｎｇＥｆｆｅｃｔｏｆＡｌ－ＬｉＡｌｌｏｙＣｈｅｎＺｈｅｎｇ；ａｎｄＨｅＭｉｎｇ(陈铮)；(何明)ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｉｎｃｅａｎｄＥｎｇｉｎｅｅｒｉｎｇ,Ｎｏｌｙ...关键词:......
Controllable in-situ aging during selective laser melting: Stepwise precipitation of multiple strengthening phases in Inconel 718 alloyHuihui Yang,Jingjing Yang,Wenpu Huang,Guanyi Jing,Zemin Wang...’ coated by a γ " shell,and γ" occurs as the times of vertical thermal cycles increase when laser peak temperature(Tp)is between the precipitation temperature of strengthening phase(Tpre)and liquid......
Dislocation-Induced Precipitation and Its Strengthening of Al–Cu–Li–Mg Alloys with High MgXiangpeng Gong,Shifang Luo,Shiyong Li,Cuilan WuCenter for High-Resolution Electron Microscopy, College... of the Al–Cu–Li–Mg alloys. However, the effects of pre-deformation on competitive precipitation relationship and precipitation strengthening have not been clarified in detail in Al–Cu–Li–Mg alloys with high......
composites have lower toughness and are difficult to obtain, the research progress of strengthening and toughening of SiC composites were discussed, and the mechanism of strengthening and toughening...; strengthening and toughening; research progress SiC复合材料因为具有高温强度大,耐磨损性能好,热稳定性强,硬度高以及耐化学腐蚀能力强等优点,在机械,航空航天等领域发挥重要作用[1-3].然而,由于SiC具有共价键性强,熔点高,自扩散系数小,烧结性差等局限性,需要借助高温(2 000~2 300 ℃)或助烧剂才能形成致密的器件.同时,SiC的脆性进一步限制了其应用......
hardened in different levels and, show the low susceptibilities of hardness change with varying cooling rate. The high hardness of the castings are caused by grain-refined strengthening and solid solution strengthening.
Key words: Al-Mg-Mn alloy; filler metal; wedge-shaped casting; grain-refined strengthening; solid solution strengthening
Experimental Study about Activated Water Generated by the Electro-hydraulic Impulse Strengthening the Mechanical Performance of ConcreteShijin ZHANG, Zhenfang LIAO and Changlin YANGCollege of Mechanical Engineering, Chongqing University, Chongqing 400044, China摘 要:<正>On the basis of a great number of experiments, it is proved that the strength......Experimental Study about Activated Water Generated by the Electro-hydraulic Impulse Strengthening the Mechanical Performance of Concrete
来源： 《JOURNAL OF MATERIALS SCIENCE TECHNOLOG2002年第4期》——Shijin ZHANG, Zhenfang LIAO and Changlin YANGCollege of Mechanical Engineering, Chongqing University, Chongqing , China
Strengthening mechanism of ceramic particle reinforced bonds by ultrasonic brazing of AlMMCsLENG Xue-song1, WANG Chang-wen1, ZHANG Yang2, CHEN Xiao-guang1, YAN Jiu-chun1(1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China; 2. School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China)Abstract......
