Influence of Injection Parameters on the Porosity and Tensile Properties of High-Pressure Die Cast Al-Si Alloys: A Review

Adamane, Anilchandra R.; Arnberg, L.; Fiorese, Elena; Timelli, Giulio; Bonollo, Franco

doi:10.1007/bf03355601

Cited by 47 publications

(22 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3 If parameters are not carefully controlled, the castings will turn out defective. The most typical defect in HPDC components is porosity, [4][5][6][7][8] which substantially degrades properties. Adamane et al 6 reviewed the effects of the injection parameters on the porosity and tensile properties of the die castings and suggested optimal values for the gate velocity and intensification pressure for an aluminum alloy.…”

Section: Introductionmentioning

confidence: 99%

“…The most typical defect in HPDC components is porosity, [4][5][6][7][8] which substantially degrades properties. Adamane et al 6 reviewed the effects of the injection parameters on the porosity and tensile properties of the die castings and suggested optimal values for the gate velocity and intensification pressure for an aluminum alloy. Yalçin et al 9 reported that the vacuum application to the die cavity is more important and effective than injection pressure to decrease porosity of A380 aluminum alloy.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Process Parameters on Distortion and Residual Stress of High-Pressure Die-Cast AZ91D Components

2017

View full text Add to dashboard Cite

This paper presents a study of distortion and residual stress within a high-pressure die-cast AZ91D component, cast under different processing conditions. The influence of process parameters, i.e., die temperature, cooling time, intensification pressure and first-phase injection speeds, was examined. Distortions were measured using the inhouse standard analog quality control fixture. Residual stress depth profiles were measured using a prism holedrilling method. It was found that the most important process parameter affecting the distortion was intensification pressure and the second most important was temperature difference between the two die halves (fixed and moving side). Tensile residual stresses were found very near the surface. Increasing the intensification pressure resulted in an increased level of tensile residual stresses.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Process Parameters on Distortion and Residual Stress of High-Pressure Die-Cast AZ91D Components

2017

View full text Add to dashboard Cite

show abstract

“…High pressure die-casting process is one of the most common manufacturing processes of high complexity and precise parts. The challenge of the process in most cases is the homogenity of the castings material, which is influenced by several controllable parameters, such as speeds, pressures, temperatures, and changeover points between phases [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Squeeze Pin Dimension and Operational Parameters on Material Homogenity of Aluminium High Pressure Die Cast Parts

Peti

Strnad

2019

Acta Marisiensis. Seria Technologica

View full text Add to dashboard Cite

The present paper is an experimental study on the squeeze pin effect on the high pressure die cast aluminium parts, as a way of improvement of material homogenity on various and big wall thickness castings. Squeeze is used in high pressure die casting technology for optimizing homogenity of big wall thicknesses of die cast parts working as structural, mechanical and hydraulic components, made of different aluminium alloys such AlSi alloys. The objective of this research is to highlight the primary and secondary effects of squeezing on the structural homogenity of high pressure die cast aluminium parts, as well as the dependence of the effects on the squeeze pin dimensions and the operating parameters.

show abstract

“…However, the application of a post-casting thermal treatment on high-pressure die-cast (HPDC) components is still a limited practice in industry. Due to the extreme turbulent flow of molten metal during filling of the die cavity, internal or sub-surface porosity, originated from entrapped gases, can usually occur in the diecastings [1]; consequently, during typical thermal treatment at elevated temperature (470÷500 • C [2]), gas expansion can produce unacceptable surface blisters on the components [2,3].…”

Section: Introductionmentioning

confidence: 99%

Effect of T6 Heat Treatment on the Microstructure and Hardness of Secondary AlSi9Cu3(Fe) Alloys Produced by Semi-Solid SEED Process

Fabrizi

Capuzzi

Mori

et al. 2018

Metals

Self Cite

View full text Add to dashboard Cite

The effect of the T6 heat treatment on the microstructure and hardness of a secondary semi-solid AlSi9Cu3(Fe) alloy have been investigated by using optical, scanning and transmission electron microscopy and hardness testing. The semi-solid alloy was produced using the swirled enthalpy equilibration device (SEED). The solution heat treatments were performed at 450, 470 and 490 °C for 1 to 6 h followed by water quenching and artificial ageing at 160, 180 and 220 °C for holding times ranging from 1 to 30 h. The microstructural investigations have revealed the spheroidization of the eutectic Si and the dissolution of the majority of Cu-rich compounds after all the solution heat treatments; moreover, the greater the solution temperature and time, the higher the hardness of the alloy. Unacceptable surface blistering has been observed for severe solution condition, 490 °C for 3 and 6 h. The artificial ageing at 160 °C for 24 h has led to the highest alloy strengthening thanks to the precipitation of β” and Q’ (or L) phases within the α-Al matrix. The hardening peaks at higher temperatures have been early achieved due to faster hardening kinetic; however, the lower number density of β” and Q’ (or L) phases and the presence of coarser θ’ precipitates result in a reduction of hardness values for peak aged condition at 180 and 220 °C, respectively.

show abstract

Influence of Injection Parameters on the Porosity and Tensile Properties of High-Pressure Die Cast Al-Si Alloys: A Review

Cited by 47 publications

References 25 publications

Effect of Process Parameters on Distortion and Residual Stress of High-Pressure Die-Cast AZ91D Components

Effect of Process Parameters on Distortion and Residual Stress of High-Pressure Die-Cast AZ91D Components

The Effect of Squeeze Pin Dimension and Operational Parameters on Material Homogenity of Aluminium High Pressure Die Cast Parts

Effect of T6 Heat Treatment on the Microstructure and Hardness of Secondary AlSi9Cu3(Fe) Alloys Produced by Semi-Solid SEED Process

Contact Info

Product

Resources

About