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J. Cent. South Univ. Technol. (2009) 16: 0588-0593 DOI: 10.1007/s11771-009-0098-z Microwave absorbing properties of high titanium slag ZHANG Li-bo(张利波), CHEN Guo(陈菓), PENG Jin-hui(彭金辉), CHEN...; Abstract: Microwave absorbing properties of high......
is 210-420℃ with the nose temperature of about 355℃. Combined with measured cooling curves, the TTP curve was used to predict the influence of quenching rate on the hardness of 7055 aluminum alloy by quench factor analysis method. And the predicted results agree reasonably well with the measured values. The quenching rate through the critical temperature range has great influence on the hardness......
, reduction in area, and hardness can reach as high as 580 MPa, 885 MPa, 26.0%, 29.1%, and Hv 222, respectively.关键词:...Preparation of high nitrogen and nickel-free austenitic stainless steel by powder injection moldingDawei Cui1), Junsheng Jiang1), Guangming Cao1), Enzhong Xiao1), and Xuanhui Qu2) 1) Department......
要:The purpose of this investigation was to evaluate the microstructure,high-temperature oxidation behaviour,and hardness of a seal coating under controlled... penetrates into the interior of the coating along phase boundaries to form island-shaped inner oxide layers with high concentrations of Cr,Ni,and Fe.Additionally,hardness increases with increasing oxide......
The Hardness of Amorphous Si-DLC Films by Molecular Dynamics Simulations兰惠清1,LIU Can1,21. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University2. Institute of Higher..., and then decreases with the further increase of the silicon content. Bulk modulus and hardness of the Si-DLC films both decrease with the increasing of the silicon content, which has the same trend......
Effect of Alloying Additions on the Oxidation of High Speed Steels under Dry and Wet Conditions () 摘要:An investigation has been carried out into the effects of chromium and vanadium content on the oxidation rate and on the adhesion of oxide scales grown on three different chemical compositions of high speed steels under dry and wet conditions. The oxidation tests were carried out......
分式[15]形式2种: (5) (6) 图1所示为2种拟合公式下橡胶弹性模量随绍尔硬度的变化曲线,仿真模型中取二者平均值.在有限元模型中将超弹性参数赋予橡胶材料以实现枕下胶垫的超弹性仿真. 图1 绍尔硬度与弹性模量的拟合关系 Fig. 1 Fitting relationship between Shore hardness and elastic module 2 车辆-弹性长枕轨道-隧道-土... Fig. 6 Relationship between dynamic response and Shore hardness 由图6可知:当枕下胶垫硬度为48时,轨枕垂向位移有效值达到最大,为0.205 mm;在枕下胶垫硬度取64时,道床和隧道壁振动加速度达到最大,分别为0.653 m/s2和0.173 m/s2;随着枕下胶垫硬度的增加,轨枕垂向位移有效值逐渐减小,道床和隧道壁加速度有效值逐渐增加......
Microstructure Characterization and Indentation Hardness Testing Behavior of Mg-8Sn-xAl-1Zn Alloys程伟丽1,2,WANG Miao2,XU Chunxiang2,ZHANG Jinshan2,LIANG Wei2,YOU Bongsun3,聂凯波21. Key Laboratory... Institute of Materials Science摘 要:The influence of Al content on microstructure characterization and indentation hardness testing behavior of Mg-8Sn-x Al(x=1 wt......
Study on stable and meta-stable carbides in a high speed steel for rollers during tempering processesJing Guo1,Hong-wei Qu1,Li-gang Liu1,Yan-liang Sun1,Yue Zhang2,Qing-xiang Yang11. State Key...="ChDivSummary">A high speed steel(HSS) was studied for rollers in this work.The steel was quenched at 1150 C and tempered at 520 C.The phase structures of the steel were determined by X-ray diffraction(XRD......
Effect of heat-input on pitting corrosion behavior of friction stir welded high nitrogen stainless steelH.Zhang,P.Xue,D.Wang,L.H.Wu,D.R.Ni,B.L.Xiao,Z.Y.MaShenyang National Laboratory for Materials... of heat-input on the microstructure and corrosion resistance of the friction stir welded high nitrogen stainless steel joints.The results showed that, the welding speed had major influence on the duration......