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Stress dependence of the creep behaviors and mechanisms of a third-generation Ni-based single crystal superalloyQuanzhao Yue,Lin Liu,Wenchao Yang,Chuang He,Dejian Sun,Taiwen Huang,Jun Zhang,Hengzhi Fu摘 要:Elevated temperature creep behaviors at 1100℃ over a wide stress regime of 120–174 MPa of a thirdgeneration Ni-based single crystal superalloy were......
蠕变共同控制.合金蠕变断裂主要受蠕变裂纹的形成与扩展的控制,蠕变断裂的方式为沿相界的剥离. 关键词:NiAl基合金；定向凝固；蠕变；蠕变断裂 中图分类号:TG146.5 文献标志码:A Tensile creep behavior of directionally solidified NiAl-Cr(Mo)-W/Nb alloy QI..., Shenyang 110016, China) Abstract: The microstructures before and after creep were also analyzed by SEM and TEM. The tensile creep behavior and mechanisms of directionally solidified (DS) NiAl-Cr(Mo......
Effect of surface recrystallization on the creep rupture property of a single-crystal superalloyZHANG Binga,LIU Changkuia,LU Xinb,TAO Chunhua,and JIANG Taoa a AVIC Failure Analysis Center,Beijing...="ChDivSummary">The effect of surface recrystallization by heating after shot-peening on the creep rupture property and fracture behavior of a single-crystal superalloy was investigated.The results show......
A modified θ projection model for constant load creep curves-I.Introduction of the modelChao Fu1,Yadong Chen1,Xiaofei Yuan1,Sammy Tin2,Stoichko Antonov1,Koichi Yagi3,Qiang Feng11. Beijing Advanced... long-term creep deformation and life of materials is an effective way to ensure the service safety and to reduce the cost of long-term integrity evaluation of high temperature structural materials.Since......
A modified theta projection model for creep behavior of RPV steel 16MND5Peng Yu,Weimin MaDivision of Nuclear Power Safety, Royal Institute of Technology (KTH)摘 要:During a hypothetical severe accident of light water reactors,the reactor pressure vessel(RPV) could fail due to its creep under the influence of high-temperature corium.Hence,modelling......
Effects of Stress Level and Stress State on Creep Ductility:Evaluation of Different ModelsJian-Feng Wen1,2,Shan-Tung Tu1,Fu-Zhen Xuan1,Xue-Wei Zhang1,Xin-Lin Gao31. Key Laboratory of Pressure Systems... on the development of strain-based approach for predicting the creep life or damage of components operating at elevated temperatures. Creep ductility, as a key parameter in this approach, may vary......
Influence of Temperature on Stacking Fault Energy and Creep Mechanism of a Single Crystal Nickel-based SuperalloySugui Tian1,Xinjie Zhu1,Jing Wu1,Huichen Yu2,Delong Shu1,Benjiang Qian11. Shenyang... crystal nickel-based superalloy during creep at elevated temperatures was investigated by means of calculating the stacking fault energy of alloy, measuring creep properties and performing contrast......
黏弹性体的剪切模量；ε11为三维状态下的轴向应变；σ1为轴向应力；σ3为围压. 2 蠕变模型参数的确定 2.1 蠕变破坏时间tF和岩石发生加速蠕变的时刻t* 经典的岩石蠕变曲线示意如图2所示,由图2可以确定2个时间参数,即蠕变破坏时间tF和岩石发生加速蠕变的时刻t*. 图2 经典的岩石蠕变曲线 Fig. 2 Classic rock creep curve 2.2 剪切模量G1和体积...100 mm,直径D为50 mm的标准圆柱体,对外观具有明显缺陷的试样进行剔除.制备得到的标准岩石试样如图3(a)所示. 图3 砂岩试样和蠕变试验系统 Fig. 3 Sandstone sample and creep test systems 试验设备采用MTS815.02试验系统如图3(b)所示.岩石的三轴力学特性试验步骤如下: 1) 将岩石试样两端均匀涂抹凡士林,保证测得试验数据不会受端部效......
, China) Abstract: By studying and summarizing the characteristics of wood rheology, the mathematic models of creep and mechano-sorptive creep of wood were analyzed. Rheology behaviors in process... rheology; creep, mechano-sorptive creep; drying stress; deformation set 1 Introduction As a kind of excellent regenerative nature engineering material, wood has fine strength-weight ratio, low heat......
INFLUENCE OF THE ADDITION OF FLY ASH ON THE CREEP OF CONCRETE张承志摘 要:<正> In the paper,test results of creep of flyash concrete,in which fly ash added... of cement and fly ash.Formula forthe relationship between the content of gel andthe creep of concrete is derived.Throughdiscussion on the content of gel and analysisfor the test result,the general......
