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rotation speed 图4 除气前后7075铝合金密度和密度指数的比较 Fig. 4 Comparison of densities and density index of 7075 alloy with and without degassing 图5 除气前7075铝合金试样的纵截面和对应的显微组织 Fig. 5 Sectioned samples and corresponding microstructures of 7075 alloy before degassing 图6所示为除气后试样纵截面的宏观照片和对应的显微组织.真空中凝固试样图6(a1)和空气中凝固试样图6(b1)气孔都显著减小,减少,裸眼很难观察到气孔,试样顶部均呈现凹下的形状. 真空中凝固试样显微组织,如图6(a2)所示,仍有一定量的微观气孔.进一步将图......
; 金相组织 图1 固溶+冷轧7075铝合金经80,100和120 ℃时效后的拉伸性能 Fig. 1 Tensile properties of 7075 Al alloy aged at 80, 100 and 120 ℃ after being solution-treated at 475 ℃ for 1 h and cold-rolling by thickness reduction of 80% 图2 不同处理状态合金的纵截面金相组织 Fig. 2 Optical images of longitudinal sections of 7075 Al alloy in processing conditions of PA(a), CR(b), AA-(80 ℃, 72 h)(c), AA-(100 ℃, 72 h)(d) and AA......
Trans. Nonferrous Met. Soc. China 27(2017) 2146-2155 Evolution of second phases and mechanical properties of 7075 Al alloy processed by solution heat treatment Xiu-liang ZOU1,2, Hong YAN1,2, Xiao-hui..., China Received 4 May 2016; accepted 31 August 2016 Abstract: The effects of solution treatment on the evolution of the second phases and mechanical properties of 7075 Al alloy were studied......
Mechanical properties, corrosion behaviors and microstructures of 7075 aluminium alloy with various aging treatments LI Jin-feng(李劲风)1, 2, PENG Zhuo-wei(彭卓玮)1, 2, LI Chao-xing(李朝兴)1, 2, JIA Zhi... corrosion, exfoliation corrosion behaviors and microstructures of 7075 Al alloy was studied, which were compared with the T6, T73 and RRA treatments. Fine h′ precipitate with high density was obtained......
; 文献标志码:A Dynamic recrystallization grain size evolution model of 7075 aluminum alloy during hot deformation YANG Dong1, CHEN Wen-lin1, WANG Shao-yang2, MA Yong1, ZHANG Jin-peng1, ZHOU Rui1, ZHAO...: Continuous dynamic recrystallization (CDRX) of 7075 aluminum alloy occurs during hot deformation. The thermal compression experiment about the group of cylindrical specimen was done at the temperature......
Trans. Nonferrous Met. Soc. China 24(2014) 954-960 Preparation of semi-solid 7075 aluminum alloy slurry by serpentine pouring channel Wen-zhi ZHU, Wei-min MAO, Qin TU School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China Received 8 June 2013; accepted 9 August 2013 Abstract: The semi-solid slurry of 7075 aluminum alloy was prepared......
Friction and wear of 7075 aluminum alloy induced by torsional fretting CAI Zhen-bing(蔡振兵), ZHU Min-hao(朱旻昊), LIN Xiu-zhou(林修洲) Tribology Research Institute, Traction Power State Key Laboratory...; Abstract: The torsional fretting wear tests of 7075 aluminum alloy flat against 52100 steel ball in dry condition were......
Trans. Nonferrous Met. Soc. China 25(2015) 2847-2855 Friction stir processing of 7075 Al alloy and subsequent aging treatment Siavash GHOLAMI, Esmaeil EMADODDIN, Mohammad TAJALLY, Ehsan BORHANI...-process aging on the microstructure, mechanical properties and wear behavior of friction stir processed 7075 Al alloy was investigated, using optical microscopy (OM), scanning electron microscopy (SEM......
; 文献标志码:A Dual-rotary fretting wear behavior of 7075 aluminium alloy under VG46 oil-lubricated condition Shen Ming-xue1, HUA Cai-hong2, Cai Zhen-bing2, PENG Xu-dong1, Zhu Min-hao2 (1. Engineering... University, Chengdu 610031, China) Abstract: The dual-rotary fretting wear behaviors of 7075 aluminium alloy flats against GCr15 steel ball in VG46 oil were studied under various tilt angles......
Trans. Nonferrous Met. Soc. China 30(2020) 318-332 Hot cracking tendency test and simulation of 7075 semi-solid aluminium alloy Bing ZHOU, Shuai LU, Kai-le XU, Chun XU, Zhan-yong WANG, Bin-jun WANG..., increasing mould temperature or decreasing pouring temperature can significantly decrease hot cracking tendency of 7075 alloy, decreasing hot cracking grade from 256 to 100 mm2. Furthermore, based on the RDG......
