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as the dominant mechanism for the creep deformation of magnesium based alloys at temperatures between 373 and 523 K under the applied stress in the range of 40-80 MPa [8,18]. For this mechanism, n varies...]. Materials & Design, 2018, 155: 422-442. [19] HUANG Y D, DIERINGA H, KAINER K U, HORT N. Deformation-induced dynamic precipitation during creep in magnesium-tin alloys [J]. Key Engineering Materials......
creep and stable creep, where the transient creep deformation and the unstable creep time are both increased with the increase of the axial compressive stress. K-H model can describe triaxial... on triaxial compressive creep model of simulative soil for deep-sea sediment MA Wenbo, RAO Qiuhua, FENG Kang, XU Feng (School of Civil Engineering, Central South University, Changsha 410075, China......
University of Science and Technology,Wuhan 430074, China;2. School of Science, Wuhan University of Science and Technology, Wuhan 430065, China)Abstract:In order to describe the three-stage creep... and temperature. A series of uniaxial compressive creep experiments are performed at various stress and temperature conditions in order to determine these parameter functions, and then the proposed......
predictingthat the matrix deformation controls high tempera-ture creep rupture.关键词:...Variation in Creep Rupture of γ′ Strengthened Superalloys with Stacking Fault Energy of Matrices阳志安,师昌绪,肖耀天摘 要:<正> The correlation between the creep......
stress exponentand the apparent activation energy were analyzed and discussed. The mechanism of the creep deformation was also analyzedby the observation of TEM.关键词:...Microstructures and Creep Behavior of a Directionally Solidified NiAl-Fe(Nb) Multiphase Intermetallic AlloyYihui QI, Jianting GUO and Chuanyong GUIDepartment of Superalloys, Institute of Metal......
. The deformation mechanism of alloy during creep at 760 °C is γ′ phase sheared by <110> super-dislocations, which may be decomposed to form the configuration of Shockley partials plus super-lattice intrinsic stacking fault, while the deformation mechanism of alloy during creep at 1070 °C is the screw or edge superdislocations shearing into the rafted γ′ phase. But during creep at 760 and 980 °C, some......
-resistant steels. The tensile creep tests ranging from 180 to 240 MPa at 923 K were conducted to investigate creep deformation behavior of welded joint between a novel heat-resistant austenite steel... factor of 6.4 in the weldment illustrates that the microstructural degradation is the dominant creep damaging mechanism in the alloy. Meanwhile, the welded joints perform two types of deformation behavior......
of the compacts can be obtained by controlling the deformation behaviors under different conditions. KIPPHUT and GERMAN[11] indicated that flow by viscous creep during thermal debinding is a major... et al[13-14] confirmed that deformation defects occurred through the release of residual stresses in the compacts as well as the self-weight of compact by viscous creep. MIZUNO et al[15] revealed......
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.... In this paper, creep curves obtained under constant load conditions were analyzed using a modified θ projection model by considering the increase in true stress with creep deformation during the creep......
is the absolute temperature. For 5000-series Al-Mg alloys, enhanced ductilities during high-temperature creep deformation can be achieved from either fine grained superplasticity or solute-drag creep. Fine... recrystallization may occur during high temperature deformation[5-9]. TALEFF et al[10-11] studied the ductility and creep mechanisms of coarse grained binary Al-Mg alloys and 5000-series commercial......
