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Effect of Er and Zr on Hot Crack Resistance and Mechanical Properties of Al-Cu-Mn-Cd alloy.

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Title: Effect of Er and Zr on Hot Crack Resistance and Mechanical Properties of Al-Cu-Mn-Cd alloy.
Authors: Ma, Chenxi1 (AUTHOR), Rong, Li1 (AUTHOR) rongli@bjut.edu.cn, Chen, Jiongshen1 (AUTHOR), Wei, Wu1 (AUTHOR), Shi, Xiaocheng1 (AUTHOR), Huang, Hui1 (AUTHOR), Wen, Shengping1 (AUTHOR), Gao, Kunyuan1 (AUTHOR), Wu, Xiaolan1 (AUTHOR)
Source: International Journal of Metalcasting. May2025, Vol. 19 Issue 3, p1388-1402. 15p.
Subjects: Heat treatment, Eutectic structure, Grain refinement, Transmission electron microscopy, Scanning electron microscopy
Abstract: This work discusses the characterization of the hot cracking resistance and mechanical properties of Al-Cu-Mn-Cd (-Er-Zr) alloy using the "constrained rod casting" method and mechanical tensile testing. Analysis of the Al-Cu-Mn-Cd (-Er-Zr) alloy's microstructure was conducted using testing methods such as optical microscopy, scanning electron microscopy, transmission electron microscopy, and others. The results indicate that alloys with the addition of Er and Zr exhibit higher resistance to hot cracking compared to alloys without Er and Zr. The Er and Zr mainly refine the grain size by increasing the degree of ingredient supercooling, while simultaneously improving the alloy's resistance to hot cracking by increasing the proportion of eutectic structure. The addition of Er and Zr results in grain size refinement and a reduction in the secondary dendrite arm spacing. The average grain sizes of alloys containing Er and Zr, and alloys without Er and Zr, are 138.43 μm and 151 μm, respectively. The average spacing of secondary dendrite arms is 21 μm and 31 μm, respectively. The average tensile strengths of alloys treated with T6 heat treatment are 500 MPa and 474 MPa, respectively. During the heat treatment process of the alloy containing Er and Zr, the formation of the Al3(Er, Zr) phase provides non-uniform nucleation sites for the θ′ phase, thereby reducing the size of the θ′ phase and consequently enhancing the strength of the alloy. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Metalcasting is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of Er and Zr on Hot Crack Resistance and Mechanical Properties of Al-Cu-Mn-Cd alloy.
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  Data: <searchLink fieldCode="AR" term="%22Ma%2C+Chenxi%22">Ma, Chenxi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rong%2C+Li%22">Rong, Li</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> rongli@bjut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Jiongshen%22">Chen, Jiongshen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Wu%22">Wei, Wu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shi%2C+Xiaocheng%22">Shi, Xiaocheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Hui%22">Huang, Hui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wen%2C+Shengping%22">Wen, Shengping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Kunyuan%22">Gao, Kunyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Xiaolan%22">Wu, Xiaolan</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Metalcasting%22">International Journal of Metalcasting</searchLink>. May2025, Vol. 19 Issue 3, p1388-1402. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Heat+treatment%22">Heat treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Eutectic+structure%22">Eutectic structure</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+refinement%22">Grain refinement</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+electron+microscopy%22">Transmission electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink>
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  Label: Abstract
  Group: Ab
  Data: This work discusses the characterization of the hot cracking resistance and mechanical properties of Al-Cu-Mn-Cd (-Er-Zr) alloy using the "constrained rod casting" method and mechanical tensile testing. Analysis of the Al-Cu-Mn-Cd (-Er-Zr) alloy's microstructure was conducted using testing methods such as optical microscopy, scanning electron microscopy, transmission electron microscopy, and others. The results indicate that alloys with the addition of Er and Zr exhibit higher resistance to hot cracking compared to alloys without Er and Zr. The Er and Zr mainly refine the grain size by increasing the degree of ingredient supercooling, while simultaneously improving the alloy's resistance to hot cracking by increasing the proportion of eutectic structure. The addition of Er and Zr results in grain size refinement and a reduction in the secondary dendrite arm spacing. The average grain sizes of alloys containing Er and Zr, and alloys without Er and Zr, are 138.43 μm and 151 μm, respectively. The average spacing of secondary dendrite arms is 21 μm and 31 μm, respectively. The average tensile strengths of alloys treated with T6 heat treatment are 500 MPa and 474 MPa, respectively. During the heat treatment process of the alloy containing Er and Zr, the formation of the Al3(Er, Zr) phase provides non-uniform nucleation sites for the θ′ phase, thereby reducing the size of the θ′ phase and consequently enhancing the strength of the alloy. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Metalcasting is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: Grain refinement
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      – SubjectFull: Transmission electron microscopy
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            – D: 01
              M: 05
              Text: May2025
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