Prototyping of a high pressure die cast al-si alloy using plaster mold casting to replicate corresponding mechanical properties

• Prototyping prior high pressure die casting (HPDC) is used for product/mold design optimization. Plaster mold casting is a cost-efficient prototyping technique providing good surface quality and dimension accuracy, similar to HPDC components. However, the corresponding mechanical properties of a component produced with these two methods are diverging significantly, mainly due to differences in the cooling rate. This work presents a procedure to optimize the plaster mold casting for prototyping to replicate mechanical properties of a commonly used Al-Si alloy (A380). Two commercial alloys with compositions close to the A380 alloy (A356.0 and A360.2) were used. Yield strength was considered as the main design criteria, thus the target mechanical property. Tensile testing results showed that with an optimized T6 heat treatment, not only the yield strength, but also ultimate tensile strength and elongation correspond well to the properties in the HPDC component.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Nyckelord

Aluminium alloys

Heat treatment

Prototyping

Aluminum alloys

Die casting

Light metals

Mechanical properties

Molds

Plaster

Product design

Software prototyping

Tensile strength

Tensile testing

Yield stress

Commercial alloys

Design criteria

Design optimization

Dimension accuracy

High pressure die casting

High pressure die casts

T6 heat treatment

Ultimate tensile strength

Silicon alloys

Publikations- och innehållstyp

ref (ämneskategori)

kon (ämneskategori)