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Creep crack growth in a Cr-Mo-V type steel: experimental observation and predictionShan-Tung TUKey Laboratory of Safety Science of Pressurized System, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology摘 要:In this study, the creep crack growth (CCG) properties and fracture mechanism of a Cr......
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;蠕变试验 中图分类号:TU472.3 文献标志码:A 文章编号:1672-7207(2011)10-3136-07 Creep triaxial tests and constitutive...<0.6), creep curves show the linear viscoelastic rheological properties. However, at the high stress level (0.6<S) creep curves show the non-linear viscous plastic rheological properties. Key words......
为模型总应力;为开关元件的应力阀值;为理想塑性体的应力阀值;和分别为模型第1和第3部分的弹性参数;,,分别为模型第2,3,4部分的黏性参数;n为蠕变指数. 图3 非线性黏弹塑性蠕变模型(NVEPB蠕变模型) Fig. 3 Nonlinear viscoelastic-plastic creep model (NVEPB model) NVEPB蠕变模型中,定义了一个开关元件,该元件的物理意义是... MPa下NVEPB蠕变模型辨识的泥质粉砂岩蠕变力学参数 Table 2 Creep mechanical parameters of argillaceous siltstone under confining pressure of 20 MPa identified by NVEPB model 由图4和表2可知,NVEPB蠕变模型拟合得到的岩石轴蠕变理论曲线和试验所得蠕变试验数据高度吻合......
High strength and high creep resistant ZrB2/Al nanocomposites fabricated by ultrasonic-chemical in-situ reactionXizhou Kai,Shuoming Huang,Lin Wu,Ran Tao,Yanjie Peng,Zemin Mao,Fei Chen,Guirong Li,Gang... reaction of the Al-K2ZrF6-KBF4 system, assisted with ultrasonic vibration and spiral electromagnetic stirring. Microstructure, tensile property and creep behavior of the fabricated nanocomposites were......
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... and microstructure evolution is necessary. In the present research,the tensile, creep behavior and microstructure evolution of the as-cast K417 G superalloy under different conditions were investigated. The results......
Creep Behavior of Fusion Zone and Base Metal of the Electron Beam Weldments of a Near-alpha Titanium AlloyZhiyong Chen1),Jinwei Li2),Jie Liu3),Qingjiang Wang1),Jianrong Liu1) and Rui Yang1) 1... temperature creep behavior of fusion zone(FZ) and base metal(BM) of the electron beam weldments of a near-alpha titanium alloy Ti-60 has been investigated.While the BM shows a fully transformed,coarse......
610065, China摘 要:<正> The effect of the mixed rare earths of Ce on the phase transformation in as cast ZA27 alloy during compressive creep... and stable during compressive creep test at 160’C. The phase transformations of ZA27-RE alloy, decomposition of β’ phase and four transformation, were delayed by the addition of rare earths, also......
was simulated. The calibrated overall creep strain shows a good approximation to experimental results. Keywords: asphalt mixture; rheological behavior; lattice model; creep 1 Introduction Asphalt mixture... creep simulation was conducted on the established lattice model to predict rheological response of the asphalt mixture. All of the nodal displacements in the bottom layer and the nodal displacements in x......
Constitutive modeling of a directionally solidified nickel-based superalloy DZ125 subjected to thermal mechanical creep fatigue loadingsXiao-An Hu1,Xiao-Guang Yang1,Duo-Qi Shi1,Hui-Chen Yu2,Ting-Ting... unified constitutive model,was formulated to capture the thermal mechanical creep fatigue deformation behavior of a directionally solidified nickel-based superalloy.A fourthorder tensor was introduced......