Influence of pores on the lifetime of die cast aluminium alloys studied by fracture mechanics and X-ray computed tomography

Article Engineering, Mechanical

Improved prediction of low-cycle fatigue life for high-pressure die-cast aluminium alloy AlSi9Cu3 with significant porosity

Dejan Tomazincic et al.

Summary: The study investigated the fatigue life of a high-pressure die-cast alloy with significant porosity, AlSi9Cu3. Results showed that pores have a significant influence on fatigue life, and two different methods were used to predict the fatigue life.

INTERNATIONAL JOURNAL OF FATIGUE (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Elucidation of void defects by soft reduction in medium carbon steel via EBSD and X-ray computed tomography

Naqash Ali et al.

Summary: The formation of voids in medium carbon ferrite-pearlite steel was investigated in this study, with a focus on the initiation sites and governing factors such as prior austenite grain size, grain boundary ferrite precipitation, pearlite block size and sub-grain boundaries misorientation. It was found that implementing soft reduction technology can reduce void defects, specifically by mitigating the effects of prior austenite grain boundary and pearlite colony boundary on void initiation. Additionally, increasing reduction amounts were associated with an increase in void number, size, and complexity, while smaller reduction amounts could effectively compensate for solidification shrinkage voids.

MATERIALS & DESIGN (2021)

添加到收藏夹

Article Materials Science, Multidisciplinary

Spatial point pattern methodology for the study of pores 3D patterning in two casting aluminium alloys

Driss El Khoukhi et al.

Summary: Two cast aluminium alloys with different porosity levels fabricated by gravity die-casting and lost foam casting were characterized using X-ray computed tomography. A spatial point pattern analysis was conducted to investigate the pore distributions, revealing that the Homogeneous Poisson process is suitable for approximating the spatial distribution of pores. Synthetic microstructures mimicking key macroscale features were generated for probabilistic modeling of fatigue behavior.

MATERIALS CHARACTERIZATION (2021)

添加到收藏夹

Article Engineering, Mechanical