共搜索到1328条信息，每页显示10条信息，共133页。用时：0小时0分0秒948毫秒
......
exposure, around 70% eutectic Si particle in the TEHPDC sample exhibits an aspect ratio <2. This indicates that the shape of eutectic Si is gradually transformed from long-strip into sphere during...Trans. Nonferrous Met. Soc. China 30(2020) 1717-1730 Effect of thermal exposure on microstructure and mechanical properties of Al-Si-Cu-Ni-Mg alloy produced by different casting technologies Jia-ying......
exposure on microstructure and mechanical properties of Ti-44Al-4Nb-4Zr-0.2Si-1B alloy ZHU Xiao-long, HUANG Ze-wen (Key Laboratory of Advanced Technologies of Materials, Ministry of Education... of many micron-sized cells, in which ω particles with D88 highly ordered structure in cell-wall regions grow significantly during the long-term exposure. Such D8 8-ω particles also form widely inside......
的有害影响.在10 000 h时,其条件屈服强度总体上仍保持在600 MPa级别,而合金的室温疲劳极限还有所提高. 关键词:TiAl合金；热暴露；相转变；拉伸；疲劳 中图分类号:TG146.4 文献标志码:A Effect of long-term thermal exposure... induced embrittlement" and "B2+ω-formation induced embrittlement". The long-term exposure does not cause detrimental effect on tensile strength and high cycle fatigue limit. After 10 000 h exposure......
alloy exposed at 500 ℃ for a long time. The plasticity decrease trend slows down with the extension of exposure time. The tensile strength (σb) increases by 30 MPa, the reduction of area (ψ) decreases..., China) Abstract: The effects of thermal exposure at 500 ℃ for various time on microstructure and mechanical properties of TC11 titanium alloy were investigated by optical microscopy (OM), scanning......
months of exposure. Since the back side was not susceptible to rain erosion, OH- could be at a high concentration for a long time; consequently, the amount of CuO on the back side of copper was greater... chlorides dominate in marine atmospheres [13-15]. The characteristics of the corrosion products formed on the metal surface affect their long-term corrosion rate. Numerous outdoor exposure experiments......
, 2011(4): 35-36. [6] HUANG Z W, CONG T. Microstructural instability and embrittlement behaviour of an Al-lean, high-Nb γ-TiAl-based alloy subjected to a long-term thermal exposure in air[J... of long-term thermal exposure on fatigue behavior of Ti-44Al-5Nb-1W-1B alloy with varied surface conditions[J]. The Chinese Journal of Nonferrous Metals, 2015, 25(6): 1458-1464. [9] HUANG Z W, VOICE W......
. The second phase in Ti40 burn resistant alloy after high temperature exposure for a long time[J]. Journal of Alloys and Compounds, 2002, 333: 165?169. [11] Zhao Y Q, Qu H L, Zhu K Y, et al. The second..., Xi’an 710016, China) Abstract: The mechanical properties of Ti-25V-15Cr-0.2Si and Ti-25V-15Cr-2Al-0.2Si after thermal exposure at 550 ℃ for different times were studied......
410083, China) Abstract: The effects of long term thermal exposure on mechanical properties and microstructures of an underaged Al-Cu-Mg-Ag alloy were investigated by tensile test, transmission electron..., which represent superior heat resistance. The residual strengths of underage samples decrease versus elongation increases as the exposure time prolongs and temperature rises from 200 to 300......
码:A Effects of long-term thermal exposure on fatigue behavior of Ti-44Al-5Nb-1W-1B alloy with varied surface conditions ZHAO Zhen-xing, SUN Hong-liang, HUANG Ze-wen (Key Laboratory of Advanced... specimens is higher than that of shot peening specimens before exposure. The fatigue strengths of the alloys with both surface conditions reduce after long-term thermal exposure......
