TB853．17 2006065270高速转镜式条纹相机同步传感器和速度传感器=Synchro- nous sensor and velocity sensor in high speed rotating-mir- rot streak cameras[刊,中]/邹翔(电子科技大学光电信息学院,四川,成都(610054)),叶玉堂…//...TB853．17 2006065270高速转镜式条纹相机同步传感器和速度传感器=Synchro- nous sensor and velocity sensor in high speed rotating-mir- rot streak cameras[刊,中]/邹翔(电子科技大学光电信息学院,四川,成都(610054)),叶玉堂…//光电子技术与信息．—2006．19(3)．展开更多
The through-thickness corrosion inhomogeneity of 7050-T7451 Al alloy thick plate was studied using immersion tests, potentiodynamic polarization, electrochemical impedance spectroscopy(EIS), slow strain rate testing(S...The through-thickness corrosion inhomogeneity of 7050-T7451 Al alloy thick plate was studied using immersion tests, potentiodynamic polarization, electrochemical impedance spectroscopy(EIS), slow strain rate testing(SSRT) technique combined with optical microscopy(OM), scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The results show that the through-thickness corrosion resistance is ranked in the order of T/2>surface>T/4. And the 75 mm-thick 7050 alloy plate presents better corrosion resistance than the 35 mm-thick plate. The results are discussed in terms of the combined effect of recrystallization and cooling rate in quenching. Alloy with lower volume fraction of recrystallization and smaller grain aspect ratio displays better corrosion resistance. The lower corrosion resistance caused by the slower cooling rate results from the higher coverage rate of grain boundary precipitates and larger width of precipitate free zone.展开更多
文摘TB853．17 2006065270高速转镜式条纹相机同步传感器和速度传感器=Synchro- nous sensor and velocity sensor in high speed rotating-mir- rot streak cameras[刊,中]/邹翔(电子科技大学光电信息学院,四川,成都(610054)),叶玉堂…//光电子技术与信息．—2006．19(3)．
基金Project(2012CB619503)supported by the National Basic Research Program of ChinaProject(2013AH100055)supported by the Foshan Civic Technological Innovation Foundation,China
文摘The through-thickness corrosion inhomogeneity of 7050-T7451 Al alloy thick plate was studied using immersion tests, potentiodynamic polarization, electrochemical impedance spectroscopy(EIS), slow strain rate testing(SSRT) technique combined with optical microscopy(OM), scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The results show that the through-thickness corrosion resistance is ranked in the order of T/2>surface>T/4. And the 75 mm-thick 7050 alloy plate presents better corrosion resistance than the 35 mm-thick plate. The results are discussed in terms of the combined effect of recrystallization and cooling rate in quenching. Alloy with lower volume fraction of recrystallization and smaller grain aspect ratio displays better corrosion resistance. The lower corrosion resistance caused by the slower cooling rate results from the higher coverage rate of grain boundary precipitates and larger width of precipitate free zone.
