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,其中,淬火温度为室温.之后,将样品表面擦干进行220 ℃下时效处理. 表1 Al-Cu-Mg合金的成分 Table 1 Composition of Al-Cu-Mg alloy (mass fraction, %) 样品在时效过程中的微小尺寸应变采用云纹干涉法进行检测.云纹干涉法是通过记录样品表面明暗条纹数量的变化,获得所需测量的微小位移量,其原理如图1所示[16...起合金尺寸的改变,在下文中会进一步讨论. 图2 Al-Cu-Mg合金在不同220 ℃下时效时间下的SEM像和EDS谱 Fig. 2 SEM images and EDS pattern of Al-Cu-Mg alloy aged at 220 ℃ for different time 2.2 Al-Cu-Mg合金在时效过程中的残余应力 图4所示为Al-Cu......
不同时效制度下Al-Cu-Mg合金的断裂韧性 Table 4 Fracture toughness of Al-Cu-Mg alloy under different ageing processes 图3所示为不同热处理状态下Kahn撕裂断口形貌的SEM像.在自然时效状态下,从图3(a)断口形貌中可看出,断裂方式由韧窝型穿晶断裂和沿晶断裂组成,韧窝较少,且相对较小,尺..., 1993: 193-214. Creep forming heat treatment technology of Al-Cu-Mg alloy ZHOU Ze-peng1, ZHANG Jin2, 3, DENG Yun-lai1, 3, ZHANG Xin-ming1, 3 (1.School of Material Science and Engineering, Central......
金的室温力学性能.采用DX-2700型X射线衍射仪进行物相分析.在FEI Technai G2 F20透射电子显微镜上进行TEM观察.采用SIGMA场发射扫描电镜观察其断口形貌. 表1 Al-Cu-Mg合金名义化学成分 Table 1 Chemical compositions of Al-Cu-Mg alloy 2 结果与讨论 2.1 铸态与均匀...1 铸态Al-Cu-Mg合金SEM像 Fig. 1 SEM images of as-cast Al-Cu-Mg alloy 图2所示为不同Cu含量的Al-Cu-Mg合金经过(485 ℃, 10 h)均匀化处理后的组织.从图2(a)中可以看出, A1合金中依然存在较明显的枝晶偏析,且晶界上有大量连续分布的未熔共晶组织;A2合金均匀化处理后枝晶偏析基本消失(见图2(b)),粗......
alloy 2.3 硬度变化 不同道次快速冷冲变形中Al-Cu-Mg合金的硬度变化曲线如图4所示.由图4可见,挤压态合金在快速冷冲变形过程中硬度值得到显著提高,由53HB增加到127HB,升高139.6%.硬度值增长最快的两个阶段是第1道次和第4道次快速冷冲变形,第2,3道次合金硬度值略有增加,但增长幅度小,尤其是第3道次快速冷冲过程中,合金硬度值还出现了小幅下降. 3 分析和...HAADF-STEM像 Fig. 3 HAADF-STEM images of S' precipitates in Al-Cu-Mg alloy samples undergoing different passes 图4 不同道次快速冷冲变形中Al-Cu-Mg合金硬度变化 曲线 Fig. 4 Hardness as function......
Trans. Nonferrous Met. Soc. China 31(2021) 1930-1938 Effect of aging treatment on evolution of S′ phase in rapid cold punched Al-Cu-Mg alloy Ze-yi HU1, Cai-he FAN1,2, Tong SHEN1, Ling OU1, Nan-shan... diffractometer (XRD), and hardness test were used to study the evolution of long plate-shaped S′ phase in the spray-formed fine-grained Al-Cu-Mg alloy during aging after rapid cold punching deformation......
Trans. Nonferrous Met. Soc. China 29(2019) 2455-2462 Re-dissolution and re-precipitation behavior of nano-precipitated phase in Al-Cu-Mg alloy subjected to rapid cold stamping Cai-he FAN1, Ling OU1...) and hardness test were used to study the re-dissolution and re-precipitation behavior of nano-precipitates of the spray-formed fine-grained Al-Cu-Mg alloy during rapid cold stamping deformation. Results......
实验 实验所用材料为厚度20 mm的Al-Cu-Mg合金热轧板,其化学成分如表1所示.沿轧制方向切取试样尺寸为110 mm×80 mm×20 mm. 表1 Al-Cu-Mg合金试样的化学成分 Table 1 Chemical composition of Al-Cu-Mg alloy (mass fraction, %) 实验采用自制蛇形轧制装置,轧辊半径为50 mm,如图1所... mm,异速比1.1的蛇形轧制板材与常规轧制的微观组织. 图4 Al-Cu-Mg合金T39态板材RD-ND面上的IPF图及相应的{111}极图 Fig. 4 IPF maps and {111} pole figures of RD-ND surface in Al-Cu-Mg alloy plates after T39 heat treatment 图4所示为EBSD......
Trans. Nonferrous Met. Soc. China 26(2016) 1482-1490 Effect of pre-deformation on microstructures and mechanical properties of high purity Al-Cu-Mg alloy Hui-zhong LI1,2,3 , Ruo-mei LIU1, Xiao-peng... April 2015; accepted 11 April 2016 Abstract: The effects of pre-deformation following solution treatment on the microstructure and mechanical properties of aged high purity Al-Cu-Mg alloy were studied......
; 文献标志码:A Effect of precipitates on creep behaviors of Al-Cu-Mg alloy CHEN Yu-qiang1, 2, PAN Su-ping3, LIU Wen-hui1, 2, CAI Zhi-hua1, TANG Si-wen1, TANG Chang-ping1, 2 (1... at this creep condition. Key words: Al-Cu-Mg alloy; creep behavior; precipitate; microstructure Al-Cu-Mg合金具有强度高,韧性好,耐热性能优越等一系列优点,在航空航天以及轨道交通等领域有着非常广泛的应用[1-3].飞机在高速飞行过程中,其表面与空气摩擦,温度迅速升高.在正常巡航速度下,飞机蒙皮的温度局部可达......