Effect of Microporosity on the Tensile Properties of High-Pressure Die-Cast AM50 Magnesium Alloy

2014 ◽  
Vol 1033-1034 ◽  
pp. 824-828
Author(s):  
X. Sun ◽  
Zhan Yi Cao ◽  
Hai Feng Liu ◽  
W. Jiang ◽  
L.P. Liu
Keyword(s):  
High Pressure ◽  
Tensile Properties ◽  
Large Variability ◽  
Die Cast ◽  
Fracture Crack ◽  
Areal Fraction ◽  
Cast Magnesium Alloys ◽  
Am50 Alloy ◽  
Cast Magnesium ◽  
Power Law Equation

Cast Magnesium alloys often exhibit large variability in fracture related properties such as ductility. In this study, the characteristics of micro-voids in high-pressure die-cast (HPDC) AM50 alloy were investigated by microstructural detecting. Specimen-to-specimen fractographic analysis of tensile fractured surface was executed to summarize the relation between microporosity and tensile properties. The results indicated that the variability in tensile properties is quantitatively correlated to the areal fraction of porosity in the corresponding fracture surface, which could be expressed by a power law equation. All the results proved that the most highly localized cluster of micro-voids is most preferentially to be the origin of fracture, and then, fracture crack will preferentially propagate through the adjacent regions that with large porosity.

Predicting the Influence of Microporosity on the Mechanical Properties and Fracture Behavior of High-Pressure Die-Cast AM50 Magnesium Alloy

2014 ◽  
Vol 670-671 ◽  
pp. 90-94
Author(s):  
X. Sun ◽  
Z.Y. Cao ◽  
H.F. Liu ◽  
W. Jiang ◽  
L.P. Liu
Keyword(s):  
High Pressure ◽  
Stress Field ◽  
Tensile Properties ◽  
Fracture Behavior ◽  
Numerical Models ◽  
Equivalent Stress ◽  
Die Cast ◽  
Areal Fraction ◽  
Am50 Alloy ◽  
Power Law Equation

In this paper, experimental and finite element modeling methods were adopted to investigate the effects of microporosity on the tensile properties and fracture behavior of high-pressure die-casting (HPDC) AM50 alloy. By specimen-to-specimen fractographic analysis, the variability in tensile properties could be quantitatively correlated with the areal fraction of the porosity presented in the corresponding fracture surfaces by using a simple power law equation. Numerical models of synthetic microstructures with different pore sizes, areal fractions of pores and pore distributions were established. Based on the experimental and numerical simulation results, it could be concluded that the fracture will initially occur in the region where has the highest intensity of equivalent stress field (i.e., contains the most highly localized cluster of pores and shrinkage), and then, fracture crack will fast propagate through the adjacent regions which have the relatively high intensity of stress field.

Optimisation of the Quality of High Pressure Die Cast Magnesium Alloys

2013 ◽  
pp. 305-313
Author(s):  
A.K. Dahle ◽  
S. Saunes ◽  
D.H. StJohn ◽  
H. Westengen
Keyword(s):  
High Pressure ◽  
Magnesium Alloys ◽  
Die Cast ◽  
Cast Magnesium Alloys ◽  
Cast Magnesium

Predicting the flow stress of high pressure die cast magnesium alloys

2014 ◽  
Vol 605 ◽  
pp. 237-243 ◽  
Author(s):  
P. Sharifi ◽  
Y. Fan ◽  
J.P. Weiler ◽  
J.T. Wood
Keyword(s):  
High Pressure ◽  
Flow Stress ◽  
Magnesium Alloys ◽  
Die Cast ◽  
Cast Magnesium Alloys ◽  
Cast Magnesium

Performance Evaluation of High-Pressure Die-Cast Magnesium Alloys

2017 ◽  
pp. 123-129 ◽  
Author(s):  
Mark Easton ◽  
Suming Zhu ◽  
Mark Gibson ◽  
Trevor Abbott ◽  
Hua Qian Ang ◽  
...  
Keyword(s):  
High Pressure ◽  
Performance Evaluation ◽  
Magnesium Alloys ◽  
Die Cast ◽  
Cast Magnesium Alloys ◽  
Cast Magnesium

Formation of defect bands in high pressure die cast magnesium alloys

2001 ◽  
Vol 1 (2) ◽  
pp. 99-103 ◽  
Author(s):  
A.K Dahle ◽  
S Sannes ◽  
D.H St. John ◽  
H Westengen
Keyword(s):  
High Pressure ◽  
Magnesium Alloys ◽  
Die Cast ◽  
Cast Magnesium Alloys ◽  
Cast Magnesium

scholarly journals Corrosion Fatigue of High Pressure Die Cast Magnesium Alloys

2013 ◽  
pp. 269-274 ◽  
Author(s):  
W. G. Ferguson ◽  
Wu Liu ◽  
Philip Ross ◽  
John MacCulloch
Keyword(s):  
High Pressure ◽  
Magnesium Alloys ◽  
Corrosion Fatigue ◽  
Die Cast ◽  
Cast Magnesium Alloys ◽  
Cast Magnesium
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