Effect of heating rate on the microstructure, texture and tensile properties of continuous cast AA 5083 aluminum alloy

Effect of heating rate on the microstructure, texture and tensile properties of continuous cast AA 5083 aluminum alloy
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升温速率对连铸AA 5083铝合金显微组织、织构和拉伸性能的影响

DOI:
10.1016/j.msea.2014.05.002
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发表时间:
2014-07
影响因子:
6.4
通讯作者:
W. C. Liu
W. C. Liu
中科院分区:
材料科学1区
文献类型:
--
作者:
M. Ma;J. X. Zhang;W. X. Wang;W. C. Liu

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将连铸 (CC) AA 5083 铝合金冷轧至 70% 压下量,然后分别在空气炉中以 5° C/min 的加热速率和在盐浴 (~ 75° C/s) 中在不同温度下退火 1 小时。研究了加热速率对CC AA 5083铝合金显微组织、织构和拉伸性能的影响。在慢速退火的情况下,CC AA 5083 铝合金表现出粗大的拉长晶组织和弱的{114}< 1 1¯ 0>再结晶织构,而在快速退火的情况下观察到细小的等轴晶结构和较弱的立方体和{114}< 1 1¯ 0>织构。快速退火促进了CC AA 5083铝合金的再结晶。完全再结晶后,盐浴退火比空气炉退火具有更高的屈服强度和略高的极限拉伸强度。 CC AA 5083铝合金的Lüders伸长现象和锯齿振幅受退火温度和加热速率的影响。
Continuous cast (CC) AA 5083 aluminum alloy was cold rolled to 70% reduction and then annealed at different temperatures for 1 h in an air furnace at a heating rate of 5° C/min and in a salt bath (~ 75° C/s), respectively. The effect of heating rate on the microstructure, texture and tensile properties of CC AA 5083 aluminum alloy was investigated. In the case of slow anneal the CC AA 5083 aluminum alloy exhibited a coarse elongated grain structure and a weak {114}< 1 1¯ 0> recrystallization texture, while a fine equiaxed grain structure and weaker cube and {114}< 1 1¯ 0> textures were observed in the case of rapid anneal. The rapid anneal promoted the recrystallization of CC AA 5083 aluminum alloy. After complete recrystallization, annealing in a salt bath resulted in higher yield strength and slightly higher ultimate tensile strength than annealing in an air furnace. Lüders elongation phenomenon and serration amplitude of CC AA 5083 aluminum alloy were affected by the annealing temperature and heating rate.
DOI: 10.1016/s0921-5093(01)01393-4
发表时间: 2002-01
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