The Effect of Inert Gas Injection Semisolid Process on the Structure and Hot Tearing Susceptibility of Al-4. 3%Cu Alloy

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Abdi Mohsen; Shabestari Saeed G.; Purghorban Amin

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Journal: FOUNDING RESEARCH JOURNAL Year:2019 | Volume:3 | Issue:1 Page(s): 1-10

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Title

The Effect of Inert Gas Injection Semisolid Process on the Structure and Hot Tearing Susceptibility of Al-4. 3%Cu Alloy

Author(s)

Abdi Mohsen | Shabestari Saeed G. | Purghorban Amin | Issue Writer Certificate

Keywords

GISS semi-solid

Globular structure

Hot tearing susceptibility

Casting simulation

Abstract

In this investigation, Al-4. 3% alloy was treated through gas induced semi-solid (GISS) process. The average grain size decreased significantly from several millimeters to less than 100μ m through this process. Results showed that GISS changed the structure from fully dendritic to globular morphology. Casting defects such as shrinkage porosities were not detected in the GISS samples. The average grain size decreased when the inert gas flow rate increased. Period time of inert gas injection did not have a significant effect on average grain size. Increasing the staring temperature of gas purging led to an increase in average grain size at constant gas flow rate and gas purging duration. The GISS sample which was prepared through inert gas purging of 20s and having flow rate of 4L. min-1 at 670˚ C, had the minimum average grain size (76μ m) and maximum sphericity (0. 86). According to the results, GISS led to a significant decrease in Hot tearing susceptibility from 14 for conventional cast sample to 1 for 680-10S-2L GISS sample. Therefore, high quality castings can be produced using GISS process.

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APA: Copy

Abdi, Mohsen, Shabestari, Saeed G., & Purghorban, Amin. (2019). The Effect of Inert Gas Injection Semisolid Process on the Structure and Hot Tearing Susceptibility of Al-4. 3%Cu Alloy. FOUNDING RESEARCH JOURNAL, 3(1 ), 1-10. SID. https://sid.ir/paper/265689/en

Vancouver: Copy

Abdi Mohsen, Shabestari Saeed G., Purghorban Amin. The Effect of Inert Gas Injection Semisolid Process on the Structure and Hot Tearing Susceptibility of Al-4. 3%Cu Alloy. FOUNDING RESEARCH JOURNAL[Internet]. 2019;3(1 ):1-10. Available from: https://sid.ir/paper/265689/en

IEEE: Copy

Mohsen Abdi, Saeed G. Shabestari, and Amin Purghorban, “The Effect of Inert Gas Injection Semisolid Process on the Structure and Hot Tearing Susceptibility of Al-4. 3%Cu Alloy,” FOUNDING RESEARCH JOURNAL, vol. 3, no. 1 , pp. 1–10, 2019, [Online]. Available: https://sid.ir/paper/265689/en

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