The optimal solution treatment condition in a Al-Si-Cu AC2B alloy

Jae Gil Jung, June Soo Park, Yang Soo Ha, Young Kook Lee, Joong Hwan Jun, Hee Sam Kang, Jong Dae Lim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The precipitates, hardness, and tensile properties of Al-6.2Si-2.9Cu AC2B alloy were investigated with respect to solution treatment time at 500°C. Al(Cu)-Al2Cu eutectic, Si, 0-(Al2Cu), and Q-(Al5Cu 2Mg8Si6) phases were observed in the as-cast specimen. With increasing the solution treatment time at 500°C, the Al(Cu)-Al2Cu eutectic and θ-(Al2Cu) phases were gradually reduced and finally almost disappeared in 5 h. The mechanical properties, such as hardness, tensile strength, and elongation, were improved with solution treatment time until about 5 h due to the dissolution of the Al2Cu particles. With further holding time, the mechanical properties did not change much. The solution treated specimens for over 5 h at 500°C exhibit almost the same tensile properties even after aging at 250°C for 3.5 h. Accordingly, the optimal solution treatment condition of the Al-Si-Cu AC2B alloy is considered to be 5 h at 500°C.

Original languageEnglish
Pages (from-to)223-227
Number of pages5
JournalJournal of Korean Institute of Metals and Materials
Volume47
Issue number4
Publication statusPublished - 2009 Apr 1

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Optimal Solution
Tensile Properties
Tensile properties
Hardness
Eutectics
Mechanical Properties
Mechanical properties
Dissolution
Tensile Strength
Elongation
Precipitates
Tensile strength
Aging of materials

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Modelling and Simulation
  • Surfaces, Coatings and Films
  • Metals and Alloys

Cite this

Jung, J. G., Park, J. S., Ha, Y. S., Lee, Y. K., Jun, J. H., Kang, H. S., & Lim, J. D. (2009). The optimal solution treatment condition in a Al-Si-Cu AC2B alloy. Journal of Korean Institute of Metals and Materials, 47(4), 223-227.
Jung, Jae Gil ; Park, June Soo ; Ha, Yang Soo ; Lee, Young Kook ; Jun, Joong Hwan ; Kang, Hee Sam ; Lim, Jong Dae. / The optimal solution treatment condition in a Al-Si-Cu AC2B alloy. In: Journal of Korean Institute of Metals and Materials. 2009 ; Vol. 47, No. 4. pp. 223-227.
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Jung, JG, Park, JS, Ha, YS, Lee, YK, Jun, JH, Kang, HS & Lim, JD 2009, 'The optimal solution treatment condition in a Al-Si-Cu AC2B alloy', Journal of Korean Institute of Metals and Materials, vol. 47, no. 4, pp. 223-227.

The optimal solution treatment condition in a Al-Si-Cu AC2B alloy. / Jung, Jae Gil; Park, June Soo; Ha, Yang Soo; Lee, Young Kook; Jun, Joong Hwan; Kang, Hee Sam; Lim, Jong Dae.

In: Journal of Korean Institute of Metals and Materials, Vol. 47, No. 4, 01.04.2009, p. 223-227.

Research output: Contribution to journalArticle

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AU - Park, June Soo

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AU - Kang, Hee Sam

AU - Lim, Jong Dae

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N2 - The precipitates, hardness, and tensile properties of Al-6.2Si-2.9Cu AC2B alloy were investigated with respect to solution treatment time at 500°C. Al(Cu)-Al2Cu eutectic, Si, 0-(Al2Cu), and Q-(Al5Cu 2Mg8Si6) phases were observed in the as-cast specimen. With increasing the solution treatment time at 500°C, the Al(Cu)-Al2Cu eutectic and θ-(Al2Cu) phases were gradually reduced and finally almost disappeared in 5 h. The mechanical properties, such as hardness, tensile strength, and elongation, were improved with solution treatment time until about 5 h due to the dissolution of the Al2Cu particles. With further holding time, the mechanical properties did not change much. The solution treated specimens for over 5 h at 500°C exhibit almost the same tensile properties even after aging at 250°C for 3.5 h. Accordingly, the optimal solution treatment condition of the Al-Si-Cu AC2B alloy is considered to be 5 h at 500°C.

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