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and the indexing ratio is low, indicating a deformed microstructure. High residual stress may exist between different layers as a result of their different flow stresses and elastic moduli. Some twin..., the microstructures in the interface layer are not clearly characterized by EBSD due to the low indexing ratio. Fig. 3 Microstructures in Zr-Ti composites as-rolled and annealed at different temperatures......
硫,蠕变性能的变化主要是由于沿晶界择优硫化而造成的. 表6 IN738LC合金在850℃,307MPa蠕变过程中表面腐蚀深度 [6] Table 6 Measured and calculated corrosion depth in load bearing section for IN738LC alloy crept at and 307MPa ...脆性区,裂纹扩展的每一次增加量都大幅的低于氧化了的脆性区.所以,空气环境因氧的有害影响而损害高温合金的低周疲劳性能. 图29 环境对铸造镍基高温合金IN738LC在900 ℃低周疲劳性能的影响[29] Fig.29 Effect of environment on low cycle fatigue behavior of IN738LC at 900 ℃[29......
the Chang 7 sub-unit is dominated by Type I and II, and the origin of the organic matter is primarily algae, with low maturity [14, 15]. After analysis of a large data set obtained from boreholes... (10.69 wt%-20.15 wt%) and TFe2O3 (3.61 wt%- 11.27 wt%) were also relatively high. The content of the rest of the major elements was very low, with averages of less than 5%. The element Si is enriched......
the sidewall. However, rock failure is generally related to the mechanical characteristics of the rock and the magnitude of the geostress. At shallow depths or low geostress conditions, rock mass failure... and 70, 95 and 112 MPa, respectively. This indicates that as the depth increases, the stress required for the sidewall initial failure and the bearing capacity of the hard rock tunnel increases......
filled tubes initiates from the low-strength components, and then propagates in the high-strength components through the gradual increment of stress. The use of more A356 alloy and aluminum foam... impact test is more advantageous over other impact methods due to its easy implementation, control and good repeatability. A free fall drop hammer is used for this low velocity impact evaluation......
problems. The first is a low-frequency vibration in the range of 1-80 Hz, which can be perceived by residents as a whole-body vibration. The second is a higher-frequency vibration in the range of 16-250 Hz... of the right high-speed line were arranged at the mid-span. Four measurement points (B2-B5) were respectively arranged at the box girder, bearing, and middle and lower areas of the pier section. Figure......
, misorientation angles ranging from 2° to 15° were defined as low-angle GBs (LAGBs), and misorientation angles above 15° as high-angle GBs (HAGBs). For the transmission electron microscopy (TEM) examination... or Zr bearing intermetallic particles) can often act as effective nucleation sites for these quench-induced phases [31,32]. As a result, a large number of solutes are depleted, which should decrease......
): 407?413. [11] JANNEY M A, OMATETE O O, WALLS C A, NUNN S D, OGLE R J, WESTMORELAND G. Development of low-toxicity gelcasting systems[J]. Journal of the American Ceramic Society, 1998, 81(3): 581?591. [12] KOKABI M, BABALUO A A, BARATI A. Gelation process in low-toxic gelcasting systems[J]. Journal of the European Ceramic Society, 2006, 26(15): 3083?3090. [13] GILISSEN R, ERAUW J P, SMOLDERS......
scope of IMCT[7-9] can be expanded from metallurgical slag and metal melts at high temperature to electrolyte aqueous solutions at low or ambient temperature. However, a universal thermodynamic model......
; 文献标志码:A 文章编号:1672-7207(2014)12-4277-15 Genetic mechanisms and classified evaluation of low permeability... observation, thin section identification, image analysis, mercury penetration, petro-physical property testing and other technical methods, the low permeability reservoirs in the near-shore subaqueous......
