3003铝合金蠕变行为与本构方程

doi:10.11896/j.issn.1005-023X.2018.06.030

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Abstract Recrystallization microstructure control and creep behaviors of cold rolled 3003 aluminum alloy were studied at temperatures of 175—250 ℃ and experimental stresses of 25—50 MPa. By adopting the equation of power law creep including elastic modulus normalized stress, the relationship between steady creep strain rate, stress and temperature was achieved. The result indicates that the two-step annealing at 350 ℃ and 600 ℃ can produce elongated grains, which are good for creep property. Higher temperature makes the stress contributed more in steady creep at increased strain rate. Results of further analysis of the creep mechanism of the alloy at different temperatures indicate that the creep mechanism of 3003 aluminum alloy differed at different temperatures, i.e., the dislocation glide creep mechanism at 175 ℃ (n=3.5) and the dislocation climb creep mechanism at 200—250 ℃ (n=5.1—8.6). By comparative analysis of the simulation and experiment, they are found to be in agreement with the experimental data, revealing that the established creep constitutive equations are suitable for different temperatures and stresses.

Key words： 3003 aluminum alloy recrystallization microstructure creep constitutive equation

Published: 25 March 2018

CLC number:

TG146.2

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	Articles by authors
	LIU Xiancui
	PAN Ye
	LU Tao
	TANG Zhijiao
	HE Weiqiao

Cite this article:

LIU Xiancui,PAN Ye,LU Tao, et al. Creep Behavior and Constitutive Equation of 3003 Aluminum Alloy[J]. Materials Reports, 2018, 32(6): 1015-1019.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.06.030 OR http://www.mater-rep.com/EN/Y2018/V32/I6/1015

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