TITLE

Flow softening behavior during hot deformation processes of 7005 aluminum alloy at medium strain rate

AUTHOR(S)
Li, Luoxing; Wang, Guan; Li, Shikang
PUB. DATE
May 2013
SOURCE
AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p1026
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
During the hot deformation of 7005 aluminum at medium strain rate of 50s-1, the flow stress curves exhibit continuous flow softening. After the correction for deformation heating, the flow softening still exists at high temperatures. EBSD observations indicate that the remaining softening is associated with grain boundary migration during dynamic recovery process. The flow softening of dynamic grain boundary migration (DGBM) and deformation heating both were removed from the flow stress curves. After ignoring those two flow softening mechanisms, the flow stress curves reach steady state values after its peak value at all deformation temperatures, which are similar with the shape of typical dynamic recovery flow stress curves. It is conclude that in addition to dynamic recovery the deformation heating and DGBM are dominated flow softening mechanisms for 7005 aluminum alloy during hot deformation.
ACCESSION #
87656072

 

Related Articles

  • Role of Plastic Deformation on Elevated Temperature Tribological Behavior of an Al-Mg Alloy (AA5083): A Friction Mapping Approach. Das, S.; Morales, A.; Riahi, A.; Meng-Burany, X.; Alpas, A. // Metallurgical & Materials Transactions. Part A;Aug2011, Vol. 42 Issue 8, p2384 

    Friction maps have been developed to explain the behavior of aluminum alloys under dynamic tribological conditions generated by the simultaneous effects of temperature and strain rate. A specially designed tribometer was used to measure the coefficient of friction (COF) of AA5083 strips...

  • Creep rupture mechanisms of 5083-Al alloy under multiaxial stress states. Ho-Kyung Kim; Hyun-Jun Kim // Journal of Materials Science;Apr2008, Vol. 43 Issue 8, p2602 

    The high-temperature rupture behavior of the 5083-Al alloy was tested to failure at 548 K under multiaxial stress states of uniaxial tension using smooth bar specimens, biaxial shearing using double shear bar specimens, and triaxial tension using notched bar specimens. Rupture times were...

  • Research on Softening of A95456 Alloy Deformed Under Elevated Temperatures. Petrov, Pavel A.; Perfilov, Victor I. // AIP Conference Proceedings;2007, Vol. 907 Issue 1, p27 

    The present paper describes the results of the research on the softening of aluminium alloy A95456 deformed at elevated temperatures. The investigations were carried out within the temperature range of 310–450 °C and strain rate of 0.01–0.4 s-1. The strain rate was either...

  • Stress-Induced Grain Growth in an Ultra-Fine Grained Al Alloy. Lin, Yaojun; Wen, Haiming; Li, Ying; Wen, Bin; Liu, Wei; Lavernia, Enrique // Metallurgical & Materials Transactions. Part B;Jun2014, Vol. 45 Issue 3, p795 

    This paper reports on a study of the stress-induced grain growth phenomenon in the presence of second-phase particles and solutes segregated at grain boundaries (GBs) during high-temperature deformation of an ultra-fine grained (UFG) Al alloy synthesized via the consolidation of mechanically...

  • A new constitutive model describing the plastic flow of metals: Application to the AA6082 aluminum alloy. El Mehtedi, Mohamad; El Mohtadi, Samer; Spigarelli, Stefano // Key Engineering Materials;2014, Vol. 585, p59 

    A new constitutive relationship based on the combination of the Garofalo and Hensel-Spittel equations has been developed and successfully used to model the plastic flow of a AA6082 aluminum alloy. Two regimes of temperature and strain rate were identified: the constitutive analysis suggested...

  • Development and application of constitutive equation for the hot extrusion of 7A04 aluminum alloy. Xiao, Yanhong; Cui, Zhenshan; Guo, Cheng // AIP Conference Proceedings;May2013, Vol. 1532 Issue 1, p616 

    The high-temperature deformation behavior of 7A04 aluminum alloy was investigated by hot compression tests in the temperature range of 300 - 450° and the strain rate range of 0.01-10 s-1. The true stress - true strain curves show that the stress level decreases with increasing temperature and...

  • Deformation characteristics during Y-shaped tube hydroforming of 6061 aluminum alloy. Chu, Guannan; Li, Feng; Liu, Wenjian // JOM: The Journal of The Minerals, Metals & Materials Society (TM;Feb2011, Vol. 63 Issue 2, p81 

    To manufacture lightweight tube components for aerospace oil circuit systems, an experiment was run to investigate the deformation characteristics on Y-shaped tube hydroforming of 6061 aluminum alloy. Both strain state and metallurgical structure indicate that there are four kinds of prevailing...

  • Erratum to: Stress-Induced Grain Growth in an Ultra-Fine Grained Al Alloy. Lin, Yaojun; Wen, Haiming; Li, Ying; Wen, Bin; Liu, Wei; Lavernia, Enrique // Metallurgical & Materials Transactions. Part B;Oct2014, Vol. 45 Issue 5, p1948 

    This paper reports on a study of the stress-induced grain growth phenomenon in the presence of second-phase particles and solutes segregated at grain boundaries (GBs) during high-temperature deformation of an ultra-fine grained (UFG) Al alloy synthesized via the consolidation of mechanically...

  • Grain boundary sliding revisited: Developments in sliding over four decades. Langdon, Terence G. // Journal of Materials Science;Feb2006, Vol. 41 Issue 3, p597 

    It is now recognized that grain boundary sliding (GBS) is often an important mode of deformation in polycrystalline materials. This paper reviews the developments in GBS over the last four decades including the procedures available for estimating the strain contributed by sliding to the total...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics