English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this work, we studied the effect of Si on the microstructure and tensileproperties of the as-cast Al-5.0Cu-0.6Mn-1.2Fe alloys which were produced bycasting with or without applied pressure. The results show that the addition ofSi can significantly influence the microstructure and tensile properties of thealloys. For the alloys produced without pressure, the addition of Si canpromote the formation of Chinese script {\alpha}-Fe, suppress the precipitationof plate-like Al3(FeMn) and Chinese script Al6(FeMn) and increase the volumepercent of porosity, resulting in a remarkable decrease in the ultimate tensilestrength (UTS) and yield strength (YS). For the alloys produced with a pressureof 75 MPa, the addition of Si can also promote the formation of fine Chinesescript {\alpha}-Fe and high number density Al2Cu ({\theta}) phases, resultingin a slight increase in UTS and YS. The strength and elongation of the alloysincreases with increasing applied pressure at the same Si level, which areattributed to the elimination of porosity, grain refinement strengthening andsolid-solution strengthening. The alloy with addition of 1.1 % Si producedunder the applied pressure of 75 MPa shows the best tensile properties, wherethe UTS, YS and elongation is 237 MPa, 140 MPa and 9.8%, respectively.

The effect of Si addition on the microstructure and tensile properties of casting Al-5.0Cu-0.6Mn-1.2Fe alloys