Effect of Divorced Eutectic on the Liquation Crack Susceptibility of Al-Cu Alloy

Cheng Gang Yang; Qiang Zhen; Ji Jun Xin

doi:10.4028/www.scientific.net/AMM.217-219.338

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 217-219Effect of Divorced Eutectic on the Liquation Crack...

Effect of Divorced Eutectic on the Liquation Crack Susceptibility of Al-Cu Alloy

Abstract:

Hot ductility testing is used to evaluate the liquation cracking susceptibility of high Strength aluminum alloy 2219, the fracture surface of hot ductility samples are inspected by SEM, the results showed that the melting point of α(Al)-CuAl2 divorced eutectic is higher than that of α(Al)- CuAl2 eutectic. The α(Al)- CuAl2 divorced eutectic is prior to melting during heating process and solidification during cooling process, so the BTR of Al-Cu alloy 2219 is narrow. The low liquation cracking susceptible and good weldability of Al-Cu alloy 2219 due to the rapidly recover the strength and ductility in elevated temperature which caused by the α(Al)-CuAl2 divorced eutectic solidification during cooling process.

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Periodical:

Applied Mechanics and Materials (Volumes 217-219)

Pages:

338-342

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.217-219.338

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Online since:

November 2012

Authors:

Cheng Gang Yang*, Qiang Zhen, Ji Jun Xin

Keywords:

BTR, Hot Ductility Testing, α(Al)-CuAl₂ Divorced Eutectic

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