Modification effect of Sr on the microstructures and mechanical properties of Al-10.5Si-2.0Cu recycled alloy for die casting

Sang Soo Shin; Eok Soo Kim; Gil Yong Yeom; Jae Chul Lee

doi:10.1016/j.msea.2011.10.076

Modification effect of Sr on the microstructures and mechanical properties of Al-10.5Si-2.0Cu recycled alloy for die casting

Sang Soo Shin, Eok Soo Kim, Gil Yong Yeom, Jae Chul Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

64 Citations (Scopus)

Abstract

The effect of Sr addition on the microstructure and mechanical properties of Al-10.5Si-2.0Cu (in wt%) recycled die-casting alloy was studied. With increasing Sr content, the morphology of the eutectic Si evolved from coarse acicular → lamellar → fine fibrous shapes. Sr addition significantly improved the mechanical properties, with the tensile strength being increased from 209 to 237. MPa and the elongation from 2.0 to 4.1%. This improvement was associated with the morphological evolution of the eutectic Si and was qualitatively evaluated by using a quality index.

Original language	English
Pages (from-to)	151-157
Number of pages	7
Journal	Materials Science and Engineering A
Volume	532
DOIs	https://doi.org/10.1016/j.msea.2011.10.076
Publication status	Published - 2012 Jan 15

Keywords

Die-casting alloys
Eutectic si
Fine fibrous
Holding time
Modification
Strontium

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2011.10.076

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title = "Modification effect of Sr on the microstructures and mechanical properties of Al-10.5Si-2.0Cu recycled alloy for die casting",

abstract = "The effect of Sr addition on the microstructure and mechanical properties of Al-10.5Si-2.0Cu (in wt%) recycled die-casting alloy was studied. With increasing Sr content, the morphology of the eutectic Si evolved from coarse acicular → lamellar → fine fibrous shapes. Sr addition significantly improved the mechanical properties, with the tensile strength being increased from 209 to 237. MPa and the elongation from 2.0 to 4.1%. This improvement was associated with the morphological evolution of the eutectic Si and was qualitatively evaluated by using a quality index.",

keywords = "Die-casting alloys, Eutectic si, Fine fibrous, Holding time, Modification, Strontium",

author = "Shin, {Sang Soo} and Kim, {Eok Soo} and Yeom, {Gil Yong} and Lee, {Jae Chul}",

note = "Funding Information: This research was supported by a grant 10033222 from the {\textquoteleft}Industrial Core Technology Development Project{\textquoteright} and sponsorship from the matching fund of Ulsan City, The Republic of Korea. ",

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doi = "10.1016/j.msea.2011.10.076",

language = "English",

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journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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AU - Shin, Sang Soo

AU - Kim, Eok Soo

AU - Yeom, Gil Yong

AU - Lee, Jae Chul

N1 - Funding Information: This research was supported by a grant 10033222 from the ‘Industrial Core Technology Development Project’ and sponsorship from the matching fund of Ulsan City, The Republic of Korea.

PY - 2012/1/15

Y1 - 2012/1/15

N2 - The effect of Sr addition on the microstructure and mechanical properties of Al-10.5Si-2.0Cu (in wt%) recycled die-casting alloy was studied. With increasing Sr content, the morphology of the eutectic Si evolved from coarse acicular → lamellar → fine fibrous shapes. Sr addition significantly improved the mechanical properties, with the tensile strength being increased from 209 to 237. MPa and the elongation from 2.0 to 4.1%. This improvement was associated with the morphological evolution of the eutectic Si and was qualitatively evaluated by using a quality index.

AB - The effect of Sr addition on the microstructure and mechanical properties of Al-10.5Si-2.0Cu (in wt%) recycled die-casting alloy was studied. With increasing Sr content, the morphology of the eutectic Si evolved from coarse acicular → lamellar → fine fibrous shapes. Sr addition significantly improved the mechanical properties, with the tensile strength being increased from 209 to 237. MPa and the elongation from 2.0 to 4.1%. This improvement was associated with the morphological evolution of the eutectic Si and was qualitatively evaluated by using a quality index.

KW - Die-casting alloys

KW - Eutectic si

KW - Fine fibrous

KW - Holding time

KW - Modification

KW - Strontium

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JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

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SN - 0921-5093

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Modification effect of Sr on the microstructures and mechanical properties of Al-10.5Si-2.0Cu recycled alloy for die casting

Abstract

Keywords

ASJC Scopus subject areas

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