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with stress exponent n=5.9 and TEM observations of thin foils prepared after the creep exposure show that the deformation mechanism in this alloy is predominantly dislocation creep. Additionally... temperatures and provides detailed look at the contribution of grain boundary sliding(GBS) to the total creep deformation. 2 Experimental The alloy Mg-3Y-2Nd-1Zn-1Mn containing (mass fraction) 3.22% Y......
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. After exposed at 600 ℃ for 100 h with the stress of 150 MPa, the residual deformation is not excess 0.1% for the alloy thermal treated at the five conditions mentioned in this paper. The best creep... Tensile and creep properties of Ti-600 alloy ZENG Li-ying(曾立英)1, 2, HONG Quan(洪权)1, YANG Guan-jun(杨冠军)2, ZHAO Yong-qing(赵永庆)1, QI Yun-lian(戚运莲)1, GUO Ping(郭萍)1 1. Northwest Institute......
, are presented. The method uses a general formulation for steady-state creep deformation for multi-material components in conjunction with the results of FE analyses. The practical application...A POTENTIAL METHOD FOR DETERMINING THE HAZ PROPERTIES IN WELDS USING TWO-MATERIAL IMPRESSION CREEP TEST T.H.Hyde1,W.Sun1 (1.School of Mechanical, Materials and Manufacturing Engineering, University......
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was utilized to analyze the microalloying effect of Cu on the creep behavior of CoFe-based metallic glasses at different loading rates. The defect activation during creep deformation was detected... with the decrease of viscosity. Our work provides a microscopic insight into structural evolution during creep deformation in a Cu-doped metallic glass, which might help for understanding the plastic deformation......
on the creep behavior, microstructural evolution, and precipitation of an Al-Cu-Li alloy was experimentally investigated during creep ageing deformation under 180 MPa for 20 h. Increasing temperature... on the microstructural evolution of the AA2198 during creep ageing deformation. Many larger dislocations and even tangled dislocation structures were observed in the sample aged at higher temperature. The number of T1......
analyzed. It is shown that, when the applied stress is less than failure stress level, the creep deformation is not obvious, and its main form is steady-state creep. When applied stress level is greater than or less than but close to fracture stress, it is easier to see the increase of creep deformation and the more obvious accelerative creep characteristics. The circumferential creep deformation......
additional creep deformation because of softening, so additional creep loading around casing becomes bigger and bigger with time going on. When stratum stress is heterogeneous, creep loading is also... was finished. From Figs.5 and 6, it is obvious that under the same loading pressure, the creep deformation increases with the increase of water content. Fig.7 shows the correlation curves of steady state creep......
