Abstract
The initiation mechanism of hot tearing in direct chill casting ingot of 7XXX aluminum alloy was investigated. In 7XXX aluminum alloys (arranged 7055 aluminum alloy), the temperature range between solidus (463°C) and 583 °C was classified into brittle range on mechanical properties and deformation behaviors in semi-solid state. The brittle range of 7XXX aluminum alloys was larger than that of other general aluminum alloys. In 7XXX aluminum alloy, the healing of the crack which initiated from shrinkage cavity was difficult to occur especially in the center of the direct chill casting ingot which was the last solidification part. Therefore, it was considered that the hot tearing in direct chill casting ingot of 7XXX aluminum alloys was easy to initiate the crack in the center of the ingot.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
D. G. Eskin and L. Katgerman, “A quest for a new hot tearing criterion” Metall. Mater. Trans. A, 38A (2007), 1511–1519.
T. Watanabe et al., “Development of the theories of solidification cracking and measuring methods for mechanical properties of solid-liquid coexistence alloys (The 1950s to the 1970s)” Journal of Japan Institute of Light Metals, 58(2008), 395–405.
T. Watanabe et al., “Development of the theories of solidification cracking and measuring methods for mechanical properties of solid-liquid coexistence alloys (The 1980s or later)” Journal of Japan Institute of Light Metals, 58(2008), 464–472.
A. Zama et al., “Development of method for measuring mechanical properties of semi-liquid Al—Mg alloy by high frequency induction heating” Journal of Japan Institute of Light Metals, 61(2011), 181–186.
A. Zama et al., “Comparison of mechanical characteristics between semi-liquid state and semi-solid state in Al–Mg alloys” Journal of Japan Institute of Light Metals, 61(2011), 446–451.
R. Takai et al., “Development of elasto-viscoplastic constitutive equation for Al–Mg alloy with tensile test in partial solidification” Journal of Japan Institute of Light Metals, 63(2013), 310–317.
N. Sakaguchi M. Tsunekawa, Y. Watanabe, “Deformation behaviors of Al-4.5mass%Cu alloy in semi solid state” Journal of Japan Institute of Light Metals, 61(2011), 66–71.
N. Sakaguchi, “Deformation behaviors of pure Al and Al-4.5mass%Cu alloy in semi-solid state” Light Metals 2012, ed. C. E. Suarez, TMS (The Minerals, Metals & Materials Society), (2012), 1127–1132.
N. Sakaguchi, “Stress-strain curves of pure aluminum and Al-4.5mass%Cu alloy in semi-solid state” Light Metals 2014, ed. John Grandfield, TMS (The Minerals, Metals & Materials Society), (2014), 1127–1132.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
Sakaguchi, N. (2016). Hot Tearing in DC Casting Ingot of 7XXX Aluminum Alloys. In: Williams, E. (eds) Light Metals 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-48251-4_109
Download citation
DOI: https://doi.org/10.1007/978-3-319-48251-4_109
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48615-4
Online ISBN: 978-3-319-48251-4
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)