Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2012, Vol.532, p.151-157

Ort / Verlag

Kidlington: Elsevier B.V

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] ► Morphology of the eutectic Si changed to fine fibrous form by addition of Sr. ► UTS, elongation and e-conductivity of the alloy were enhanced by modification of Si. ► Optimum Sr content is 0.03pct and holding time of 150 min. ► More addition of Sr and increase holding time did not affect the modification of Si. 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.